CAST-IN-PLACE CONCRETE PART 1 - GENERAL Section ...Test Specimens in the Field C 33 Concrete Aggregates C 39 Compressive Strength of Cylindrical Concrete Specimens C 42 Obtaining and

Section 03300

CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.01 Description of Work

Furnish and install the cast-in-place concrete as shownand indicated on the Drawings and as specified in thisSection, complete.

1.02 Referenced Publications

(a) The latest edition of the publications listedbelow form a part of these Specifications:

1. American Concrete Institute (ACI)Publications

211.1 Standard Practice forSelecting Proportions forNormal, Heavyweight, and MassConcrete

301 Specifications for StructuralConcrete for Buildings

302.1R Guide for Concrete Floor andSlab Construction

304 Recommended Practice forMeasuring, Mixing, Trans-porting, and Placing Concrete

305R Hot Weather Concreting

306R Cold Weather Concreting

318 Building Code Requirements forReinforced Concrete

2. U.S. Army Corps of Engineers (COE) WaterwaysExperiment Station Publications

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CRD-C-621 Handbook for Concrete andCement, Specifications forNon-shrink Grout, Volume II

American Association of State Highway andTransportation Officials (AASHTO) Publication

M 182 Burlap Cloth Made From Jute orKenaf

American Society for Testing and Materials(ASTM) Publications

C 31 Making and Curing ConcreteTest Specimens in the Field

C 33 Concrete Aggregates

C 39 Compressive Strength ofCylindrical Concrete Specimens

C 42 Obtaining and Testing DrilledCores and Sawed Beams ofConcrete

C 94 Ready-Mixed Concrete

C 143 Slump of Portland CementConcrete

C 150 Portland Cement

C 171 Sheet Materials for CuringConcrete

C 172 Sampling Freshly MixedConcrete

C 173 Air Content of Freshly MixedConcrete by the VolumetricMethod

C 231 Air Content of Freshly MixedConcrete by the PressureMethod

C 260 Air-Entraining Admixtures forConcrete

C 309 Liquid Membrane-FormingCompounds for Curing Concrete

C 494 Chemical Admixtures forConcrete

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C 595 Blended Hydraulic Cements

C 618 Fly Ash and Raw or CalcinedNatural Pozzolan for Use as aMineral Admixture in PortlandCement Concrete

C 881 Epoxy-Resin-Base BondingSystems for Concrete

D 1751 Preformed Expansion JointFiller for Concrete Paving andStructural Construction (Non-extruding and ResilientBituminous Types)

PART 2 - PRODUCTS

2.01 Cement

Cement shall be standard Portland cement of Americanmanufacture, conforming to ASTM C-150, Type I. Onlyone brand of commercial Portland cement shall be usedin the exposed concrete of the structure. Cementreclaimed by cleaning bags or from leaking containersshall not be used. Each bag shall weight approximately94 pounds and contain one cubic foot.

2.02 Concrete Aggregates

(a) Fine aggregate shall be sand having clean, hard,durable, uncoated grains and free from deleterioussubstances and shall conform to ASTM C-33.

(b) Coarse aggregate shall be crushed stone havingclean, hard, durable, uncoated particlesconforming to ASTM C-33. Aggregate forlightweight concrete shall conform to ASTM C 330.

2.03 Water

Water used in mixing concrete shall be clean, potableand free from deleterious amounts of acids, alkalies ororganic materials.

2.04 Expansion Joint Filler Material

Expansion joint material shall be asphalt-impregnatedfiber strips, 1/2-inch thick, unless otherwise shown ornoted on the Drawings, conforming to ASTM 1751.

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2.05 Waterstops

Where shown on the Drawings in expansion joints andconstruction joints, waterstops shall be polyvinylchloride (PVC) and shall incorporate a galvanized steelwire along both edges which shall be used to secure thewaterstop in position, by tying to reinforcement,during concrete placement. The waterstop shall be ofthe size noted on the Drawings. The waterstop shall beequal to Wirestop CR-9380 or Burke. The waterstopshall extend the entire length of the joint and allsplices shall be heat welded and tested in accordancewith the manufacturer's instructions.

2.06 Vapor Barrier

Vapor barrier shall be polyethylene sheeting, minimum 6mil thickness, conforming to ASTM C 171.

2.07 Non-Shrink Grout

Non-shrink grout shall be a ready-to-use non-metallicaggregate product requiring only the addition of waterat the jobsite, and shall conform to COE CRD-C-621.

2.08 Admixtures

(a) Water reducing admixture shall conform to ASTM C-494, Type A.

(b) Water reducing, retarding admixture shall conformto ASTM C-494, Type D.

(c) Non-Corrosive, Non-Chloride Accelerator: Theadmixture shall conform to ASTM C-494, Type C.

(d) Air entraining admixture shall conform to ASTM C-260.

(e) High range water reducer (HRWR) shall conform toASTM C494, Type F or G.

(f) Calcium Chloride: Calcium chloride or admixturescontaining more than 0.1 percent chloride ions arenot permitted.

2.09 Curing and Sealing Compounds

(a) Curing compound shall be acrylic based, conformingto ASTM C-309.

(b) Sealing-hardener compound shall conform to ASTM C-309.

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2.10 Bonding Compounds

Bonding Compound shall conform to ASTM 881.

PART 3 - EXECUTION

3.01 Concrete Quality

(a) All mix designs shall be proportioned inaccordance with ACI 211.1. The proportioningshall be based on the requirements of a well-graded high density plastic and workable mixwithin the slump range and strengths required.The following class of concrete is required:

Class of Compressive SlumpConcrete Strength @ 28 Days Range

A 4000 3 to 5-inch

1. Air Content: All concrete shall have an aircontent of 5 to 7 percent.

2. Water-Cement Ratio: All concrete shall havea maximum water-cement ratio of 0.45.

3. Admixture Usage: All concrete shall containa water reducing admixture or water reducing-retarding admixture, and an air entrainingagent. All concrete placed at airtemperatures below 50 degrees F shall containthe specified non-corrosive non-chlorideaccelerator.

3.02 Mix Designs

(a) The testing laboratory shall be paid for by theTrustee.

(b) The Contractor shall submit samples, in adequatequantities for each mix design and verification,of all concrete materials to be used on theproject to the designated testing laboratory. TheContractor shall not use any concrete in this workwithout acceptance and verification of design mixby the testing laboratory and the approval of theDesign Engineer.

(c) If trial batches are used, the testing laboratoryshall make strength tests from trial batches inthe laboratory using materials and mix designsproposed for use by the Contractor. The testinglaboratory shall prepare trial batches inaccordance with ACI 211.1.


(d) If field experience method is selected, theproposed mix design must be accompanied bycomplete standard deviation analysis and at least30 consecutive strength test that represent theproposed mix.

(e) The proposed mix design and supporting data mustbe submitted, in triplicate, to the testinglaboratory for their review and comments at least21 days prior to the expected start of concretingoperations. The testing laboratory will forwardtwo copies of the submittal to the TrustRepresentative with their comments. The TrustRepresentative will review the submittal andreturn one copy to the Contractor with the TrustRepresentative's comments.

(f) Compression test specimens made to verify themixes shall be made in accordance with ASTM C-192.Aggregates shall be tested in accordance with ASTMC-33. All compression test specimens shall betested in accordance with ASTM C-39.

3.03 Plant Mixing

(a) Proportioning Concrete

1. Proportions shall be in compliance withapproved design mix for each class ofconcrete.

2. The mixing plant shall be provided withadequate equipment and facilities foraccurate measurement and control of thequantities of material and water used in theconcrete.

3. Concrete materials shall be measured byweight except that admixtures shall bemeasured by volume.

(b) Batching

1. The Contractor shall provide all necessaryequipment to accurately determine and controlactual amount of materials entering into theconcrete mix. Individual ingredients shallbe weighted separately for each batch.Accumulative weighing will be allowed ifequipment is in acceptable working order asdetermined by the testing laboratory andapproved by the Trust Representative.Accuracy of all weighing devices shall be

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such that successive quantities can bemeasured to within one percent of the desiredamount.

2. Completely discharge contents of the mixerbefore each new batch is loaded. Use ofretempered concrete is not permitted.

3. Ready-mixed concrete shall be mixed anddelivered in accordance with requirements ofASTM C-94 and to the following:

a. A separate water metering device (nottruck tank) shall be used for measuringwater added to the original batch.

b. Use of wash water as a portion of themixing water is not permitted. Washwater added to empty drums afterdischarging shall be dumped before a newbatch is received.

c. Centrally mixed concrete shall be mixedfor the length of time specified herein,not "shrink-mixed".

d. Mixing drums shall be watertight.

e. Concrete shall be discharged within onehour from the time concrete was mixed,if centrally mixed, or from time theoriginal water was added, if transit-mixed.

f. Furnish delivery ticket with each loadof concrete delivered under theseSpecifications. Delivery ticket shallshow clearly the class and strength ofconcrete, size of coarse aggregate,water per cubic yard, the slump ordered,quantities of all admixtures, and thedate and time of departure from thebatching plant.


3.04 Conveying Equipment

(a) If concrete is to be transported in carts orbuggies, the carts or buggies shall be equippedwith pneumatic tires.

(b) Equipment for chuting or other methods ofconveying concrete shall be of such size anddesign as to insure a practically continuous flowof concrete at delivery without segregation ofmaterials.

3.05 Conveying

(a) Concrete shall be conveyed from mixer to place offinal deposit by methods which will preventseparation or loss of the material.

(b) Runway supports shall not bear upon reinforcingsteel or fresh concrete.

(c) All conveying equipment shall be thoroughlycleaned before each run of concrete is begun.

3.06 Delivery and Protection of Materials

Deliver ready-mixed concrete in compliance withrequirements set forth in ASTM C-94.

3.07 Severe-Weather Provisions

(a) Hot-Weather Concreting

1. Provide adequate methods of loweringtemperature of concrete ingredients so thatthe temperature of concrete when placed doesnot exceed 90 degrees F.

2. When the weather is such as to raise concretetemperature, as placed, consistently above 90degrees F, Pozzolith retarder shall be used.

3. Subgrade and forms shall be wetted with waterbefore placing of concrete. All excess watershall be removed before concrete is placed.

4. Curing shall start as soon as practicable toprevent evaporation of water. Flat workshall be protected from dry winds, direct sunand high temperatures.

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(b) Cold-Weather Concreting

1. Provide adequate equipment for heatingconcrete materials and protecting concreteduring freezing or near-freezing weather. Nofrozen materials, or materials containingice, shall be used.

2. All concrete materials and all reinforcement,forms, fillers and ground with which concreteis to come into contact shall be free fromfrost.

3. Whenever the temperature of the surroundingair is below 40 degrees F and falling, allconcrete placed in the forms shall have atemperature of between 70 and 80 degrees F,and adequate means shall be provided formaintaining a temperature of not less than 70degrees F for three days, or 50 degrees F forfive days, or for as much more time as isnecessary to insure proper curing of theconcrete. If high early strength concrete isused, the requirement for maintenance of 50degrees F can be reduced to three days.

4. Use only the specified non-chlorideaccelerator. Calcium chloride or admixturescontaining more than 0.1 percent chlorideions are not permitted.

5. Housing, covering or other protection used inconnection with curing shall remain in placeand intact at least 24 hours after theartificial heat is discontinued.

3.08 Construction Joints and Expansion Joints

(a) Construction Joints: Early in the constructionprogram, the Contractor shall review with theDesign Engineer any construction joints proposedfor use which are not indicated on the Drawings.The Contractor shall not use any constructionjoints which are not approved by the DesignEngineer. In all cases, construction joints shalloccur at sections of minimum shear. Whereconstruction joint is to be made, surface of theconcrete shall be roughened (construction jointsdetailed with key ways in slabs and walls, are notrequired to be roughened) and thoroughly cleanedof foreign matter and laitance. In addition tothe foregoing, joints shall be dampened with waterand the specified bonding compound applied, or aslush coat of neat cement grout shall be applied.

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Additional construction joints that are requestedby the Contractor and approved by the TrustRepresentative shall be of the type shown and/ornoted on the Drawings for the specific element(s)being considered (i.e., wall slabs, etc.).

(b) Expansion joints shall be installed as indicated.

3.09 Waterstops

Waterstops shall be installed as indicated andnoted on Drawings and shall be made continuous byfusion welds.

3.10 Inspection of Work Before Placing

(a) The Contractor shall inspect the forms to receiveconcrete for any deficiencies which would preventproper placing of concrete. Do not proceed withplacing concrete until such deficiencies arecorrected.

(b) Give the Trust Representative at least 48 hoursnotice before any concrete is to be cast.Concrete shall not be cast until the TrustRepresentative has observed and given approval ofthe work to be cast including, but not limited to,the placement of all the reinforcing, accessories,forms and the surfaces to be cast against. Suchobservations are in the nature of assisting theContractor to minimize errors and in no case willthey serve to relieve the Contractor of theresponsibility to provide the materials andworkmanship required by the Contract Documents.

(c) Do not place concrete on earth until the fill orexcavation has been prepared as set forth underapplicable Sections of the Specifications for thatwork.

(d) The Contractor shall not place in the concrete anyitem that is not authorized to be placed by theDrawings and Specifications. The Contractor shallinsert all the items as required by the othertrades and properly position and secure them intheir intended location. Openings other thanthose which are facilitated by sleeves shall beproperly formed and positioned as required by theother trades.

(e) Do not place concrete in forms until all foreignmatter has been removed from forms and thereinforcing steel is in proper condition forplacement of concrete.


(f) Remove hardened, or partially hardened, concreteon forms or reinforcement before placing concrete.

3.11 Placing

(a) Deposit concrete as nearly as practicable in itsfinal position to avoid segregation due torehandling or flowing. Do not deposit concrete onwork that has partially hardened or beencontaminated by foreign material, and do not useretempered concrete. In no case shall Group IIconcrete be cast when the elapsed time afteraddition of water and cement to batch exceeds onehour. For Group I concretes, this elapsed timemay be extended if sufficient data from thisconstruction indicates a time extension ispermissable and if approved by the DesignEngineer.

(b) Concrete shall be placed to avoid the displacementof reinforcing, and coating or spattering thereinforcing steel. The placing of concrete withinform work shall be regulated so that the pressurewithin form work does not exceed the designpressure. In placing concrete each layer shall beplaced following the preceding layer to preventlines of separation or "cold joints" in the work.After the concrete reaches its initial set,jarring the formwork or placing strain orvibration on the ends of projecting reinforcingbars shall be carefully avoided.

(c) Concrete shall not be dropped more than four feet.For greater distances of drop, concrete shall behandled with metal chutes or tremie pipes.Greater drops shall be permitted only if approvedby the Design Engineer.

(d) Once concreting is started, it shall be carried onas a continuous operation until placing of theconcrete between construction joints is completed.The top surface will be finished to the requiredalignment.

(e) Concrete shall be placed in layers not over 12-inches deep and each layer shall be compacted withthe aid of mechanical internal-vibrating equipmentsupplemented by hand spading. Vibrators shall inno case be used to transport concrete. Use ofform vibrators will not be permitted. Internalvibrators shall maintain a speed of not less than5,000 impulses per minute when submerged in theconcrete. At least one spare vibrator shall be

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maintained as a relief. Duration of vibrator useshall be limited to that necessary to producesatisfactory consolidation without causingobjectionable segregation. Vibrator shall not belowered into courses that have begun to set.Apply vibrator at uniformly spaced points notfurther apart than the visible effectiveness ofthe machine.

(f) Install vapor barrier over prepared sub-base forall concrete floor slabs on grade. Use largestsheets practicable to reduce number of joints.Lap joints a minimum of 24-inches. Remove tornand punctured sheets and replace with new sheetsprior to placing concrete. Placing of concreteshall be done in a manner that will not damage thevapor barrier material. The sub-base materialshall be as shown and/or noted on the Drawings.

(g) Type and use of vibrators shall be in accordancewith ACI 301.

3.12 Protection

Protect freshly placed concrete from damage or injurydue to water, falling objects, persons or anything thatmay mar or injure finish surface on concrete. Onlylight use of the floor shall be permitted for the firstseven days after placing of concrete.

3.13 Curing

(a) All Slabs. After placement and finishing,concrete shall be maintained in a moist conditionfor at least seven successive days during whichthe temperature of the concrete is 50 degrees F orabove. For temperatures of 50 degrees F andbelow, curing period shall be 14 successive days.

1. Concrete shall be kept moist by any one, orcombination, of the following methods:

a. Ponding or Immersion: Continuallyimmerse the ccfhcrete in water throughoutthe curing period. Water shall not bemore than 20 degrees F less than thetemperature of the concrete.

b. Fog Spraying or Sprinkling: Provideuniform and continuous application ofwater throughout the curing period.

c. Pervious Sheeting: Completely coversurface and edges of the concrete with


two thicknesses of wet sheeting.Overlap sheeting 6-inches over adjacentsheeting. Sheeting shall be at least aslong as the width of the surface to becured. During application, do not dragthe sheeting over the finished concretenor over sheeting already placed. Wetsheeting thoroughly and keepcontinuously wet throughout the curingperiod.

d. Impervious Sheeting: Wet the entireexposed surface of the concretethoroughly with a fine spray of waterand cover with impervious sheetingthroughout the curing period. Laysheeting directly on the concretesurface and overlap edges 12-inchesminimum. Provide sheeting not less than18-inches wider than the concretesurface to be cured. Secure edges andtransverse laps to form closed joints.Repair torn or damaged sheeting orprovide new sheeting. Inspect surfaceof concrete daily for wetness. Thesurface shall be kept continuously wetduring the curing period.

(b) All Other Concrete: After placement, concreteshall be maintained in a moist condition for thesame periods as specified above.

1. Concrete in Formed Surfaces - Slabs, Beams,Columns and Building Walls: Keep forms andexposed surfaces wet with water during thecuring period. If forms are removed beforethe end of the curing period, apply a curingcompound within one hour after form removal.

3.14 Patching

(a) Any concrete which is not formed as shown on theDrawings, or for any reason is out of alignment orlevel or shows a defective surface, or showsdefects which reduce the structural adequacy of amember or members, as determined by the TrustRepresentative, shall be considered as notconforming with these Specifications and shall beremoved from the Project by the Contractor atContractor's own expense, unless the DesignEngineer grants permission to patch the defectivearea, which shall be done in accordance with thefollowing procedure:

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1. Permission to patch any such area shall notbe considered a waiver of the Design Engineerright to require complete removal of thedefective work if the patching does not, inthe Trust Representative's opinion,satisfactorily restore the quality andappearance of the surface or the structuraladequacy of the member or members.

(b) After removing the forms, all concrete surfacesshall be inspected and any joints, voids, stonepockets or defective areas permitted by the TrustRepresentative to be patched and all tie holes,shall be patched. Defective areas shall bechipped away to a depth not less than 1-inch withthe edges perpendicular to the surface. Removedefective areas to sound concrete with clean,square cuts. Dampen concrete surfaces to be incontact with patching concrete and apply thespecified bonding compound. Place patchingconcrete over the bonding compound as specified bythe manufacturer. Place, compact and finish toblend with adjacent finished concrete. Cure inthe same manner as adjacent concrete. Beforepatching mix is applied, the prepared surfaceshall first be approved by the Design Engineer.

(c) Patching concrete mix (or mortar) shall be subjectto the approval of the Design Engineer. Thepatching concrete shall be compacted into placeand screeded off so as to leave the patch higherthan the surrounding surface. It shall then beleft undisturbed for a period of one to two hoursto permit initial shrinkage before being finished.The patch shall be finished to match the adjoiningsurface. All patches shall be cured as specifiedfor the original concrete.

(d) Tie holes left by withdrawal of rods or the holesleft by removal of ends of wall ties shall befilled solid with mortar after first being wetted.For holes passing through the wall, a plunger-typegrout gun shall be used to force the mortarthrough the wall starting at the back face. Apiece of burlap or canvas shall be held over thehole on the outside and when the hole is filled,the excess mortar shall be struck off with thecloth flush with the surface. Holes not passingthrough the walls shall be filled with a smalltool that will permit packing the hole solid withmortar. Any excess mortar at the surface of thewall shall be struck off flush with a cloth.

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3.15 Finishes on Formed Surfaces

(a) Upon completion of patching, surfaces of concreteshall be finished as follows:

1. Rubbed stone finish, where noted on theDrawings

a. Stone rubbed finish shall be produced bycasting concrete against plywood formsand by rubbing the surfaces withcarborundum stone and water, afterpatching of tie holes and depressions,to a true, even and smooth finish ofuniform color and texture. No slushcoat of cement grout or cement wash willbe permitted at any state of thefinishing.

b. Areas to be rubbed shall be finished assoon as forms can be stripped. Striponly those forms on areas which can befinished in the same day as the formsare stripped.

2. Common finish shall be produced by fillingall tie holes, honeycomb and depressions, andknocking off and evening up burrs and formmarks.

a. All concrete surfaces not receiving astone rubbed or rough finish shallreceive a common finish.

3. Rough finish shall be produced by filling alltie holes and honeycomb and in other respectsleaving the surface as formed.

a. All concrete surfaces which will becovered by earth and which will not bevisible in the completed structure,shall receive a rough finish.

3.16 Steel Troweled Finish - Floor Slabs

(a) Steel troweled finish shall be applied to thesurface of all concrete floor slabs and interiorequipment pads and slabs shown on the Drawings orspecified to receive a steel troweled finish.

(b) Concrete shall be placed, consolidated, struck-offand leveled to the proper elevation. After thesurface has stiffened sufficiently to permit theoperation and the water sheen has disappeared, the


surface shall be wood floated, by hand or powerfloated, at least twice, to a uniform sandytexture. Floors shall be leveled such thatdepressions between high spots do not exceed 1/4-inch under a 10 foot straightedge except wheredrains occur, in which case the floors shall bepitched to the drains as indicated on theDrawings.

(c) After the concrete has received a float finish, itshall be troweled at least twice to a smooth densefinish. The drying of the surface moisture beforefloating or troweling shall not be hastened by thedusting on of dry sand or cement. Both power andhand troweling shall be required. The firsttroweling shall be done by a power trowel andshall produce a smooth surface relatively free ofdefects. Additional troweling shall be done byhand after the surface has hardened sufficiently.The final troweling shall be done when a ringingsound is produced as the trowel is moved over thesurface. The surface shall be thoroughlyconsolidated by the hand troweling operations.The finished surface shall be free of any trowelmarks or other imperfections; shall be uniform intexture and appearance, and shall be in true planewithin the tolerance specified. Any deviationfrom this condition which remains after thetroweling is completed shall be corrected bygrinding.

3.17 Broom Finish

(a) Broom finish shall be applied to all exterior sidewalks, walkways, platforms and all steps andlandings both interior or exterior.

(b) The surface shall be given a floated finish asspecified above, then finished with a flexiblebristle broom or burlap belt drawn across thesurface. Surface must be hardened sufficiently toretain the scoring or ridges. Scores or ridgesshall be transverse to traffic or at right anglesto the slope of the slab.

3.18 Testing Laboratory

(a) The testing laboratory shall be paid by theTrustee. The laboratory shall have access to allplaces where concrete materials and concretes aremanufactured, stored, proportioned, mixed, placedand tested. Duties shall include, but notnecessarily be limited to the following:

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1. Make, store, transport, cure and testcompression specimens made during placing ofconcrete. Compression test specimens shallbe tested in accordance with ASTM C-39. Testreports shall show all pertinent data, suchas class of concrete, exact location of pour,air temperature, date of pour, time of pour,truck number for ready-mixed concrete, dateon which specimen was broken, age ofspecimen, compressive strength of specimen,slump test results, and air content of pourfrom which the specimen was made. One copyeach of all tests shall be sent to theContractor and two copies each to the TrustRepresentative.

2. For each class of concrete, take fourstandard test cylinders from each 100 cubicyards or fraction thereof of concrete placed,not less than four cylinders for each 5,000square feet of surface area placed in anysingle day. Two of these cylinders shall bedesignated for the 28 day test and shallcomprise a test under the definition of theseSpecifications. One cylinder will be brokenat seven days and will be used as an aid indetermining the early strength of theconcrete and the 28 day strength, and onecylinder retained in reserve for latertesting if required.

3. Periodically inspect the batching plant andfile a report with the Trust Representativestating whether the supplier's equipment andmethods meet the requirements of theseSpecifications.

(b) Temperature and Placing Record: Temperaturerecord shall be made each day during theconcreting operations. Records shall also includelocation, quantity and starting and finishing timeof placement for all concrete work. Copydistribution shall be as specified above for testreports.

3.19 Evaluation of Compression Tests

(a) Evaluation of compression test results shall be asfollows:

1. For each class of concrete, compression-strength tests for laboratory-cured cylindersshall be considered satisfactory if theaverages of the results of all sets of three

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consecutive compression-strength tests equalor exceed the 28 day design compression-strength specified; and, no individualcylinder strength test falls below therequired compression strength by more than500 psi. Strength tests of specimens curedunder field conditions may be required by theTrust Representative to check the adequacy ofcuring and protecting of the concrete placed.Specimens shall be molded by the fieldquality-control laboratory at the same timeand from the same samples as the laboratory-cured specimens.

(b) Faulty Concrete: Failure to meet any of thespecified conditions constitutes faulty concrete.Unless otherwise directed by the Design Engineer,faulty concrete shall be removed and replaced withconcrete as specified, at no expense to theTrustee.

(c) Additional Testing: If permitted by the TrustRepresentative, additional testing shall besubject to the approval of the TrustRepresentative and the Design Engineer and at noexpense to the Trustee. Load test, if permittedby the Trust Representative and the DesignEngineer shall be conducted in accordance with theloading criteria as required by the design of thestructure, as determined by the TrustRepresentative.

(d) Neither the results of laboratory verificationtests nor any provision in the Contract Documentsshall relieve the Contractor of the obligation tofurnish concrete of the class and strengthspecified.

3.20 Non-Shrink Grout

All column base plates, equipment bases and otherlocations noted on the structural Drawings shall begrouted with the specified non- shrink, non-metallicgrout.

END OF SECTION

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SECTION 15051

BASIC MECHANICAL MATERIALS AND METHODS

PART 1 - GENERAL

1.01 Scope

(a) The work described in this Section and/orindicated on the Drawings shall include, exceptwhere otherwise noted, the furnishing of allmaterials, eguipment, appurtenances, accessories,connections, labor, etc. required and/ornecessary to completely install, clean, inspect,adjust, test, balance and leave in safe andproper operating condition all mechanicalsystems. All mechanical work shall beaccomplished by workers skilled in the varioustrades involved.

(b) Prior to the ordering or purchase of anyequipment or materials or the layout orinstallation of any work, the Contractor shallvisit and examine the site and shall examine andunderstand the work shown on the Drawings anddescribed in these Specifications. If any workinvolves existing equipment, ductwork, piping/buildings, etc., the Contractor shall firstverify model numbers, electrical characteristics,sizes, dimensions, etc. to be compatible with thework shown on the Drawings.

(c) Throughout the course of the Project, theContractor shall schedule and coordinate workwith the Trust Representative and other trades tooptimize space utilization and avoid conflict orinterference with the work of other trades,structural elements, doors, windows, lights,conduit and other equipment or systems.

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(d) Unless otherwise shown on the ElectricalDrawings, the mechanical work shall include:

1. The furnishing and installation of allmotors, motor starters, relays and othercontrols and control wiring necessary forthe proper operation of all mechanicalequipment. Single point power wiring tomechanical equipment shall be provided as apart of the electrical work.

2. All controls and control wiring shall beprovided under this Division. A transformershall be furnished and installed to convertpower voltage to control voltage asrequired. The transformer may be anintegral part of the starter.

3. Magnetic starters complete with "hand-off-automatic" switches, with running indicationlights in an approved enclosure, shall befurnished and installed for mechanicalequipment automatically started and stopped,or otherwise controlled. Starters for allmanually controlled equipment shall includestart-stop pushbuttons with runningindication lights in an approved enclosure.

4. Starters shall be of the reduced voltagepart winding type for all equipment withmotors 50 HP and larger.

5. Disconnect switches shall be provided formechanical equipment in accordance withNational Electrical Code. Coordinate type(fused or not), fuse ratings, enclosure typeand installation with equipment nameplate,NEC, NEMA and Division 16 requirements.

(e) Unless otherwise noted, enclosures shall be thesame NEMA type as shown on the ElectricalDrawings.

(f) The Contractor will be held responsible for thesatisfactory and complete execution of all workincluded. The Contractor shall produce completefinished operating systems and provide allincidental items required as part of the work,regardless of whether such item is particularlyspecified or indicated.

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1.02 Qualifications

All materials shall be furnished by manufacturersfully experienced, reputable and qualified in themanufacture of the particular material to befurnished. All material shall be designed,constructed and installed in accordance withstandard practices and methods and shall complywith these Specifications as applicable.

1.03 Submittals

(a) Submittals for all mechanical work shall conformto the requirements of the section entitled "ShopDrawings, Product Data and Samples" of theseSpecifications.

(b) Drawings and Specifications

1. The Drawings are diagrammatic and, unlessspecifically dimensioned, are intended toshow only the general arrangement ofequipment and accessories, and the generalrouting of piping, etc. The Drawings do notspecifically show every fitting, offset,contour, etc. required to accomplish theintended work or to avoid every interferencethat may be encountered. It shall be theresponsibility of the Contractor to arrangeall work to fit within the allowed spacewithout modifying any building structure orproperty, and to make readily accessible allequipment and accessories requiringservicing or maintenance.

2. Should any changes be deemed necessary bythe Contractor in items shown on theContract Drawings, shop drawings,descriptions and the reason for the proposedchanges shall be submitted to the TrustRepresentative for approval.

3. Exceptions and inconsistencies in Drawingsand Specifications shall be brought to theTrust Representative's attention before Bidsare submitted.

4. Titles of sections and paragraphs in theseSpecifications are introduced merely forconvenience and are not to be construed ascomplete segregation of tabulation of thevarious units of material and/or work.


(c) Operating and Maintenance Instructions:Complete, neatly framed instructions for the careand operation of all equipment shall be providedand installed where directed. In addition,operation and maintenance instructions shall beprovided in accordance with the requirements ofthe section entitled "Operating and MaintenanceData" of these Specifications. The Contractorshall instruct the Trustee's personnel during theadjustment and testing period. The Contractorshall also, in the presence of both the TrustRepresentative and the Engineer demonstrate thecomplete operation of each and every piece ofapparatus. Instructional periods shall be forsuch lengths of time as may be necessary tothoroughly familiarize operating personnel withthe proper care, operation and maintenance of theequipment.

(d) Permits and Inspections

1. The Contractor shall obtain and pay for, aspart of the mechanical work, all permits,fees, licenses, taxes, assessments, etc.necessary for performing the work outlinedin the Contract Documents.

2. All applicable certificates of inspectionshall be delivered to the Trustee at thecompletion of the work.

1.04 Transportation and Delivery

(a) As part of the mechanical work, the Contractorshall provide and pay for all transportation,delivery and storage required for all equipmentand materials.

(b) The mechanical contractor shall closelycoordinate the ordering and delivery of allmechanical equipment with other trades to assurethat equipment will be delivered in time to beinstalled in the building without requiringspecial or temporary access or buildingmodifications. Certain equipment may have to beinstalled prior to the erection of the buildingwalls or roofs.


1.05 Storage and Protection

(a) Upon receipt of all equipment and materials, theyshall be properly stored to protect them fromvandalism, theft, the elements and other harm ordamage. Any equipment or materials received in adamaged condition, or damaged after receipt,shall not be installed. Only new undamagedequipment in first-class operating conditionshall be installed.

(b) Provide protection covers, skids, plugs or capsto protect equipment and materials stored orotherwise exposed during construction.

1.06 Quality Assurance

(a) The manufacturer shall provide writtencertification to the Trust Representative thatall equipment furnished complies with allapplicable requirements of these Specifications.

(b) Codes and Standards

1. All mechanical work shall be performed inaccordance with all applicable codes,ordinances, rules and regulations of local,state, federal or other authorities havingjurisdiction. As a minimum, this shallinclude:

a. BOCA National Fire Prevention Code,1990

b. BOCA National Mechanical Code, 1990c. Massachusetts State Plumbing and Gas

Code, 1990d. National Fire Protection Association

Codes.e. Unless otherwise specified on the

Drawings, the latest edition of allcodes, ordinances, etc. shall befollowed. Where code or otherrequirements exceed the provisionsshown on the Contract Documents, theContractor shall notify the TrustRepresentative. Where provisions ofthe Contract Documents exceed code orother requirements, the Work shall beperformed in accordance with theContract Documents.


2. All equipment, products and materials usedin mechanical work shall be Underwriter'sLaboratories listed or labeled asapplicable.

3. The Contractor shall schedule all requiredtests and inspections with a minimum of 72hours prior notice to the Design Engineerand the Trust Representative.

(c) Allowable Tolerances: Equipment shall be readilyadaptable for installation and operation in thestructures shown on the Drawings. Noresponsibility for alteration of a plannedstructure to accommodate other types of equipmentwill be assumed by the Trustee. Equipment whichrequires alteration of the structures will beconsidered only if the Contractor assumes allresponsibility for making and coordinating allnecessary alterations. All such alterationsshall be made at the Contractor's expense.

1.06 Warranty

(a) All mechanical work described in the ContractDocuments shall be warranted from the date offinal acceptance in accordance with the sectionentitled "Warranties and Bonds" of theseSpecifications.

(b) This warranty shall apply to all equipment,materials and workmanship.

(c) During the warranty period, all defects inmechanical systems shall be corrected in anacceptable manner, consistent with the quality ofmaterials and workmanship of originalconstruction, at no expense to the Trustee.

PART 2 - PRODUCTS

2.01 Materials and Construction

(a) General

1. All equipment, materials, accessories, etc.used as part of the mechanical work shall benew, of the best grade and quality and ofcurrent production, unless specifiedotherwise. Equipment not specified in theContract Documents shall be suitable for theintended use and shall be subject toapproval by the Trust Representative.


2. All equipment, products and materials usedin mechanical work shall be Underwriter'sLaboratories listed or labeled asapplicable.

3. All equipment, products and materials shallbe free of defects and shall be constructedto operate in a safe manner withoutexcessive noise, vibration, leakage or wear.

4. Electric motors shall be standardefficiency, drip-proof type unless otherwisespecified.

(b) Piping: See appropriate sections of Division 15for Specifications on various piping systems.See Part 3 of this Section for generalstipulations on installation of piping systems.

(c) Valves: See appropriate sections of Division 15for Specifications and Part 3 of this Section forgeneral stipulations on valve installation.

(d) Unions

1. Provide and install unions between each itemof equipment and the valve controllingand/or the various piping connections to it.

a. Steel Pipe: Unions 2-1/2-inches andsmaller shall have ground joints.Unions 3-inches and larger shall haveflanged unions.

(e) Equipment Bases: Each piece of equipment whichis motor driven shall be furnished with anapproved base, which shall be in addition to thefoundation. Each base shall be furnishedintegral with the equipment or apparatus, orshall be furnished as a separate item, designedto accommodate the equipment or apparatus.Submit shop drawings for all foundations andsupports for review.

(f) Dielectric Isolation

1. Wherever copper, brass or bronze pipingsystems are connected to steel or ironpiping systems, this connection shall bemade with dielectric isolators. Thedielectric isolators shall be so designedthat non-ferrous piping materials shall be


isolated by the use of Teflon or nylonisolating materials made up in the form ofscrewed type unions or insulating gasketsand bolt sleeves and washers for standardflanged connection. All dielectricisolators shall be selected for the pressureof the system involved.

2. Dielectric isolators shall be Watts, Epco,Crane or Maloney.

PART 3 - EXECUTION

3.01 Installation

(a) General

1. All equipment, materials, accessories, etc.used as part of the mechanical work shall beinstalled according to the manufacturer'srecommendations and in accordance with thebest practice and standards for the work.

2. All work shall be performed by competentpersonnel satisfactory to the Trustee andTrust Representative. All work requiringparticular skill shall be performed bypersons that have had special training andpast experience in that line of work.

(b) Equipment Support

1. Major equipment supports (concretefoundations, etc.) shall be furnished andinstalled under other Divisions of theContract Documents as shown on the Drawings.The mechanical work shall include, however,the furnishing and installation of allmiscellaneous equipment supports,housekeeping pads, structural members, rodsand clamps required to provide adequatesupport of all mechanical equipment.

2. Unless otherwise shown on the Drawings, allmechanical equipment, piping and accessoriesshall be installed level, square and plumb.


(c) Pipe Penetrations

1. Sleeves shall be installed in concrete slabsfor pipe penetrations. Sleeves shall bestandard weight steel pipe. Sleeves shallbe sized to provide a minimum of 1/4-inchclearance between the sleeve and pipe. Forinsulated pipes the clearance shall bebetween the sleeve and the insulation.

2. As far as possible, all pipe penetrationsshall be provided for at the time ofconcrete construction. Where drilling isrequired, only core drills shall be used.Star drills shall not be used.

(d) Welding

1. All welded pipe joints shall be made by thefusion welding process, employing a metallicarc or gas welding process.

2. All welding operations shall conform to thelatest recommendations of the AmericanWelding Society or to the applicableprovisions of the Code for Pressure Piping.The Contractor shall pay for all electricalenergy and/or gas used in welding.

(e) Equipment Connections

1. Extend water and gas air lines to thevarious items of equipment as indicated orrequired, terminating the lines where and asdirected. Make all final connections.Provide shut-off valves and unions at eachwater and gas connection to each item ofequipment requiring same.

2. During the roughing-in phase of the work,extend service lines to the various items ofequipment, terminating them at the properpoints for connection to those items ofequipment as indicated on the detaileddrawings of the equipment and/or asdirected. During the time the equipment isbeing installed or after it is in place,make all final connections thereto.


(f) Cutting and Patching: Where cutting or patchingbecomes necessary to permit the installation ofany work or should it become necessary to repairany defects that may appear in patching, theContractor shall make the necessary repair at nocost to the Trustee.

(g) Large Apparatus and Equipment: All largeapparatus and equipment which is specified orshown to be furnished or installed under thisContract, and which may be too large to be movedinto its final position through the normalbuilding openings planned, shall be placed by theContractor in its approximate final positionbefore any obstructing structure is installed.All apparatus shall be cribbed up from the floorand cared for as specified under "Storage andProtection" or as directed by the TrustRepresentative.

(h) Cross Connection and Interconnections: TheContractor shall verify location of all existingutilities and make all connections to existingfacilities as required.

(i) Thermal Expansion of Piping

1. The Contractor shall furnish and install alldevices required to permit the expansion andcontraction of all work installed by theContractor. Swing joints, turns, expansionloops or long offsets shall be providedwherever shown on the Drawings or wherevernecessary to allow for the expansion ofpiping. Broken pipes or fittings broken dueto rigid connections must be removed andreplaced at the Contractor's expense.

2. Anchor all lines having expansion joints sothat expansion and contraction effect isequally distributed. Verify exact locationsof anchors with the Trust Representativeprior to making installation. The lineshaving expansion joints shall be accuratelyguided on both sides of each joint. Theseguides shall consist of saddles and "U"clamps properly arranged and supported.Submit complete details for approval.

3. In installing expansion members, exercisecare to preserve proper pitch on lines.Furnish and install all special fittings,connectors, etc., as required.


3.02 Surface Preparation, Shop and Field Painting

Touch-up painting of mechanical equipment shallbe part of the mechanical work. All equipmentand materials that are painted or coated by themanufacturer shall be touched-up prior tocompletion to conceal any and all scratches orother finish irregularities and to maintain theintegrity of the paint or coating. All paintingand coating shall match the original and shallconform to the requirements detailed in othersections of these specifications.

3.03 Inspection and Testing

(a) Testing of Pipelines: Refer to the sectionentitled "Testing of Piping and HydraulicStructures" of these Specifications for generalrequirements.

(b) The mechanical work shall include all materialsand labor required to properly test and balanceall mechanical systems as required by codes andas described herein.

(c) Concealed, underground and insulated piping shallbe tested in place before concealing, burying orcovering. Tests shall be conducted in thepresence of the Trust Representative ordesignated representative. Equipment, materialsand instruments required for tests shall befurnished without incurring additions to theContract. The Contractor shall schedule allrequired tests and inspections with a minimum of72 hours prior notice to the Trustee and theTrust Representative.

(d) Unless otherwise specified herein, all mechanicalpiping shall be tested as required by Code to 1-1/2 times the rated system pressure or 150 psig,whichever is greater. Care shall be taken toisolate all equipment not suitable for this testpressure by installing pipe caps or blank flangesat the equipment connections. All valves andfittings shall be tested under pressure.


3.04 Cleaning

(a) At all times, the premises shall be keptreasonably clean and free of undue amounts ofwaste, trash and debris by periodic cleaning andremoval. After completion, all foreign material,trash and other debris shall be removed from thesite.

(b) After all equipment has been installed, but priorto testing and balancing, all equipment, piping,etc. shall be thoroughly cleaned both inside andout.

(c) Prior to Trustee review and acceptance, allsystems shall be finally cleaned and shall beleft ready for use.

END OF SECTION


SECTION 15094

PIPE SUPPORTS AND HANGERS

PART 1 - GENERAL

1.01 Requirements Included

(a) Work specified in this Section shall comply withthe provisions of Division 1 and Section 15051.

(b) The work of this Section includes all pipesupports and brackets necessary to install pipingfurnished under these Contract Documents. TheContractor shall furnish and install allfoundations, anchor bolts, pipe supports, shims,clamps, hardware and supplemental steel requiredfor a complete installation as shown on theDrawings and/or specified herein.

(c) The Drawings do not show every pipe hangerlocation, but are intended to provide a guide asto type and usage of pipe supports intended underthis Contract. The Contractor shall provide allpipe supports required to securely support allpiping in accordance with the referencedstandards.

1.02 Project Conditions

(a) Building structures shall be erected under othersections of these Specifications and should beessentially complete prior to starting work underthis Section.

(B) The Contractor shall be responsible for fieldverifying existing dimensions prior to fabricationof pipe support systems.

1.03 Sequencing and Scheduling

The Contractor shall coordinate scheduling of pipesupport installation with the piping systeminstallation to prevent any damage to installed pipingdue to lack of pipe supports.

12/21/91


1.04 References

(a) Manufacturer's Standardization Society of theValve and Fittings Industry (MSS) Standards

SP-58 Pipe Hangers and SupportsMaterials, Design and Manufacture(1983)

SP-69 Pipe Hangers and SupportsSelection and Application (1983)

SP-89 Pipe Hangers and SupportsFabrication and InstallationPractices (1985)

(b) American National Standards Institute (ANSI)Standards:

B31.1 Code for Pressure Piping - PowerPiping

(c) American Society of Mechanical Engineers (ASME)Standards:

Section VIII Pressure Vessels

Section IX Welding and Brazing Qualifications

(d) American Society for Testing and Materials (ASTM)Standards:

A136-84 Structural Steel

A153-82 Zinc Coating (Hot Dip) on Iron andSteel Hardware

A730-80 Repair of Damaged Hot-DipGalvanized Coatings

1.05 Submittals

Complete shop drawings and engineering data shall besubmitted to the Trust Representative in accordancewith the requirements of the section entitled "ShopDrawings, Product Data and Samples" of theseSpecifications.



Pipe supports and accessories shall be stored andprotected in accordance with the requirements of thesection entitled "General Equipment Stipulations" ofthese Specifications.


(a) Work shall be installed by workmen experienced inthe design, selection, fabrication andinstallation of pipe support systems.

(b) Selection, fabrication and installation of pipehangers and supports shall conform to therequirements of ANSI B31.1, MSS SP-58, SP-69 andSP-89.

(c) Pipe support systems shall utilize standardmanufactured supports wherever possible.

(d) Pipe support materials in contact with pipingshall be compatible with the piping materials suchthat neither shall have a deteriorating action onthe other.

(e) Supplemental steel shall be designed per AISCSteel Construction Manual or Standard BuildingCode.

PART 2 - PRODUCTS

2.01 Acceptable Manufacturers

Acceptable manufacturers of pipe support productsare ITT Grinnell, B-Line Systems, Fee and Mason orMichigan Hanger Company.

2.02 Materials and Construction

(a) All supports and hangers shall meet the followingmaterial requirements:

1. All structural steel shall conform to ASTM A36.

2. All pipe support columns shall conform toASTM A 53, Grade B and shall be minimumSchedule 40.

3. All embedded anchor bolt materials shallconform to ASTM A 193, Grade B8; ASTM A 276,Type 304; or IFI-104, Grade 304. Nuts shallbe heavy hex nuts conforming to ASTM A 194,


Grade 8 or IFI-104, Grade 304. Minimumanchor bolt size for pipe supports shall be5/8-inch diameter.

4. All carbon steel or malleable iron straps,hangers, clamps, U-bolts and other hardwarein contact with the pipe shall be shop primedexcept where specified or shown on theDrawings to be galvanized.

5. Expansion type anchor bolts shall be ofstainless steel construction and shall complywith Federal Specifications FF-S-325.

6. Pipe supported from underneath and subject toexpansion shall have adjustable pipe rollstand supports equal to Grinnell, Figure 274or Fee and Mason, Figure 161. The pipe rollstand shall be supported by concrete piers,structural steel or steel brackets asrequired.

7. Pipe supported from underneath and notsubject to expansion shall have cast-in-placeconcrete supports as shown on the Drawings oradjustable pipe saddle supports on properlysized pipe stanchions and ample, properlygrouted floor flanges. Saddle supports shallbe equal to Grinnell, Figure 264 or Fee andMason, Figure 291.

8. All concrete piers shall be Class "A11

concrete meeting the requirements of theseSpecifications.

9. Riser clamps for vertical piping shall besteel riser clamps equal to Grinnell Fig.261.

10. U-Bolts: Steel with four finished hex nuts,galvanized, special dimensions as requiredfor installation, Grinnell Figure 137 (137Sfor special dimensions) or equal.

11. Turnbuckle: Galvanized forged steelconstruction, Grinnell Figure 230 or equal.

15094—4 Jordan, Jones & Goulding

PART 3 - EXECUTION

3.01 Installation

(a) General

1. Pipe supports shall be installed in completeconformance with the manufacturer'srecommendations and the Contract Documents.

2. Pipe supports shall be selected based on pipesize. Provide all angles, channels and otherstructural supports to support the pipingsystems.

3. All supporting equipment shall be designedwith a minimum safety factor of 5 based onthe ultimate tensile strength of thematerial.

4. Contact between ferrous supports and non-ferrous piping materials shall not bepermitted. Supports and clamps shall berubber coated or copper-plated as necessaryto prevent this condition.

5. Adequate supports shall be provided so thatthere is no movement or visible saggingbetween supports.

6. Carbon steel shall be supported on maximumintervals as follows:

Maximum Intervalfor Steel, Feet

Pipe Size. Inches Liquid Gas

1/2 5 63/4 6 71 7 91-1/2 9 112 10 132-1/2 11 143 12 154 13 176 17 218 19 2410 22 2712 23 2914 25 3216 27 35

15094-5 Jordan, Jones £ Goulding

Maximum Intervalfor Steel, Feet

Pipe Size, Inches Liquid Gas

18 28 3720 30 3924 32 42

7. FRP piping shall be supported on maximumintervals as follows:

Tubing Size. Inches Maximum Interval. Feet

3/8 and smaller 21/2 - 5/8 33/4 - 1-1/8 41-1/4 - 2 52-1/2 - 3-1/2 64 76 8

8. Where indicated or directed by the TrustRepresentative, exposed piping and tubingcarrying liquid shall be sloped as necessaryto permit complete draining. Pipe deflectionbetween supports shall be considered whendetermining the slope required to permitcomplete drainage. All underground pipingshall be sloped uniformly for completedrainage.

9. Open ends of pipe columns used for supportshall be completely covered with 1/4-inchthick plate or angle leg welded in place.

10. Vertical piping shall be supported as shownor required to prevent buckling or swayingutilizing special brackets.

11. Provide a support within 18-inches of eachelbow and within 24-inches of each equipmentconnection.

12. On insulation finished with an aluminumjacket, a I/32-inch thick sheet of neopreneshall be provided between the jacket and theshield.

13. Hangers shall be selected to fit aroundinsulation.


14. Following installation all pipe supportsshall be field primed and painted with thespecified painting system for the applicationin accordance with the requirements of thesection entitled "Painting" of theseSpecifications.

15. Unless otherwise shown, piping shall not befastened to a support in such a manner thatwould prevent axial movement due to thermalexpansion and contraction.

16. Unless otherwise noted, piping dimensionsshown on the Drawings are for reference onlyand shall be verified in the field by theContractor. The Contractor shall sizesupports and hangers using actual fielddimensions.

(b) Installation - Horizontal Piping

1. Provide all necessary steel angles and otheritems required to maintain the minimumsupport spacing.

2. Pipe supports for horizontal piping supportedon concrete floors and on concrete basesshall be adjustable pipe saddle support withU-bolt and screwed floor flange. Bolt floorflange to floor and bases utilizing all boltholes, use foam glass inserts at all saddles,sleeves, etc.

(c) Installation - Pipe Supports for Vertical Piping:Supports for all pipes shall fit directly aroundthe pipe, except that on insulated pipes, thesupport shall be insulated and provided with vaporbarrier.

(d) Supplemental Steel

1. All supplemental steel shall be fabricated inaccordance with the requirements of the AISCManual of Steel Construction and the StandardBuilding Code.

2. No flame cutting of galvanized steel memberswill be permitted.

3. All galvanized surfaces damaged or exposed bycutting or drilling shall be resurfaced inaccordance with ASTM A780.


3.02 Surface Preparation and Shop Painting

Fabricated pipe supports and accessories, except whereshown on the Drawings to be galvanized, shall becleaned and shop primed.

3.03 Painting

(a) Coat all non-glavanized steel with a two-partepoxy exterior coating system equivalent to thatmanufactured by Rust-o-leum, PPG, or Sherman-Williams

(b) Apply base primer coat compatible with the finishcoat in accordance with the manufacturer'sinstructions.

(c) Clean all rust, machine oils, and other surfaceimperfections in strict accordance with thecoating system manufacturer's recommendations.

(d) Apply final finish coat in accordance with themanufacturer's instructions, with specialattention to proper temperature and humidityconditions. Monitor finish coat material usage toinsure proper finish coat thickness.

(e) Repair all abrasions in the coat afterinstallation in accordance with the coating systemmanufacturer's instructions.

3.04 Cleaning

Prior to acceptance of the work of this Section,thoroughly clean all installed materials, equipment andrelated areas in accordance with the section entitled"Cleaning11 of these Specifications.

END OF SECTION

15094-8 Jordan, Jonmm & Ooulding

SECTION 15100

VALVES

PART 1 - GENERAL

1.01 Scope

(a) The equipment shall include, but is notnecessarily limited to, the following:

1. Utility Service Valves

1.02 References

(a) Massachusetts State Plumbing and Gas Code, 1990

(b) National Fuel Gas Code, 1990

(c) National Fire Protection Association (NFPA)Standards

(d) Federal Specifications (FS)

1. MSS SP-80 Valve, Angle, Check, andGlobe, Bronze (125, 150, and200 pound), Threaded Ends,Flange Ends, Solder End, andBrazed Ends for Land Use

2. WW-V-58 Valve, Gate, Cast iron;Threaded and Flanged for LandUse

1.03 Service

Valves specified in this Section are intended for nonpotable water and natural gas service.

1.04 Submittals

(a) Submit to the Trust Representative within 30 daysafter execution of the Contract a list ofmaterials to be furnished, the names of thesuppliers and the date of delivery of materialsto the site.

12/21/91


(b) Complete shop drawings of all valves andappurtenances shall be submitted to the TrustRepresentative for approval in accordance with thesection entitled "Shop Drawings, Product Data andSamples" of these Specifications. Clearlyindicate make, model, location, type, size andpressure rating. Drawings submitted not showinginstalled location for use shall be returnedwithout review.

PART 2 - PRODUCTS


(a) Provide valves of same manufacturer throughoutwhere possible.

(b) Provide valves with manufacturer's name and model(figure number), valve size, and pressure ratingclearly marked on outside of body.

2.02 Valve Connections

(a) Provide valves suitable to connect to adjoiningpiping as specified for pipe joints. Use pipesize valves.

(b) Thread pipe sizes 2-1/2-inches and smaller.

2.03 Utility Service Valves

(a) This service includes non-potable water andnatural gas.

(b) Non Potable Water Valves

1. Ball Valves

a. Valves shall be bronze body with bronzelever handle, full port, bronze ball andstem, TFE seats and packing, and screwedconnections. Valves shall be rated for300 psi maximum operating pressure and180 degrees F maximum temperature.

b. Ball valves shall be Consolidated Brass,Dyna-Quip, Jamesbury, Nibco orWorchester.


(c) Natural Gas Valves

1. Shutoff valves 2-inches and smaller shall becast iron body gas cock, threaded ends; CraneNo. 1228, Nibco or Stockham.

2. Shutoff valves greater than 2-inches shall becast iron body gas cock, threaded ends; CraneNo. 324, Nibco or Stockham.

3. For gas control and safety equipment seeSection 15484.

PART 3 - EXECUTION

3.01 Installation

(a) All valves and appurtenances shall be installed inthe locations shown on the Drawings, true toalignment and properly supported. Any damage tothe above items shall be repaired to thesatisfaction of the Trust Representative beforethey are installed.

(b) Install all of the various types of operators andappurtenances as shown on the Drawings, andinstall concrete inserts for supports as soon asforms are erected and before concrete is poured.Before setting these items, the Contractor shallcheck all plans and figures which have a directbearing on their location and shall be responsiblefor the proper location of these valves andappurtenances during the construction of thestructure.

3.02 Shop Painting

Ferrous surfaces of valves and appurtenances shallreceive a coating of rust-inhibitive primer.

3.03 Field Painting

All metal valves and appurtenances specified hereinand exposed to view shall be painted.

END OF SECTION

15100-3 Jordan, Jon«a ft Goulding

SECTION 15101

UTILITY PIPING SYSTEMS

PART 1 - GENERAL

1.01 Scope

(a) Work specified in this Section is subject to theprovisions of Division 1 and Section 15050.

(b) The work covered by this Section includesfurnishing all labor, equipment and materialsrequired to furnish, install the utility pipingsystems as specified herein and/or shown on theDrawings.

1.02 References

(a) Massachusetts State Building Code

(b) Massachusetts State Plumbing and Gas Code

(c) National Fuel Gas Code

(d) National Fire Protection Association (NFPA)Standards

1. NFPA 54 National Fuel Gas Code

(e) American Society for Testing and Materials (ASTM)

1. A 53 Pipe, Steel, Black and HotDipped, Zinc-Coated, Weldedand Seamless

2. A120 Pipe, Steel, Black and Hot-Dipped, Zinc-Coated(Galvanized) Welded andSeamless, for Ordinary Use

(f) Federal Specifications (FS)

1. O-F-506 Flux, Soldering: Paste andLiquid

12/21/91


2. WW-N-351 Nipples, Pipe, Threaded

3. WW-P-521 Pipe Fittings, FlaredFittings, and Flanges; Steeland Malleable Iron (Threadedand Butt Welding) Class 150

4. WW-U-531 Unions, Pipe, Steel orMalleable Iron; ThreadedConnection, 150 Ib. and 250Ib.

(g) National Bureau of Standards (NBS)

1. Handbook H28

1.03 Submittals

(a) Complete shop drawings and engineering data onall piping and accessories shall be submitted tothe Trust Representative in accordance with therequirements of Section 01300 and Section 15050of these Specifications.

(b) Shop drawings shall indicate piping layout inplan and/or elevations as may be required andshall include a complete schedule of all pipe,fittings, specials, hangers and supports.Special coatings shall be clearly detailedshowing all pertinent dimensions.

(c) The Contractor shall furnish the Inspector withlists of all pieces of pipe, valves and fittingsin each shipment received. These lists shallgive the serial or mark number, weight, class,size and description of each item received.

(d) Submit installation and maintenance instructions,and spare parts lists in accordance with Division1 and Section 15050 of these Specifications.

(e) The Contractor shall obtain approval for theproposed installation of natural gas systems fromall local inspecting authorities that havejurisdiction prior to submittal to the TrustRepresentative.


(a) Piping, valves and accessories shall be storedand protected in accordance with the requirementsof the section entitled "General EquipmentStipulations" of these Specifications.


(b) All piping and accessories shall be stored aboveground and at a slope so as to be free-draining.


(a) The Contractor shall submit written evidence tothe Trust Representative that the pipe furnishedunder this Specification is in conformance withthe material and mechanical requirementsspecified herein. Certified copies ofindependent laboratory test results or mill testresults from the pipe supplier may be consideredevidence of compliance provided such tests areperformed in accordance with the appropriate ASTMor AWWA testing standards by experienced,competent personnel. In case of doubt as to theaccuracy or adequacy of mill tests, the TrustRepresentative may require that the Contractorfurnish test reports from an independent testinglaboratory on samples of pipe materials.

(b) Each pipe length, valve, and fitting shall beclearly marked with the pressure rating, metalthickness class, heat mark, net weight (excludinglining or coating) and name of the manufacturer.

(c) Work shall be performed by workers skilled in theinstallation of utility piping systems.

(d) Manufacturers of gas equipment shall be firmscapable of showing at least five years ofexperience in the design and manufacture ofnatural gas equipment.

(e) Coordinate the installation of each piping systemwith the work of other trades to avoidinterferences.

(f) Do not scale drawings.

(g) Installation tools and equipment shall not damageproducts.

(h) Coordinate natural gas service requirements withthe local gas company for proper meter selectionand installation.


PART 2 - PRODUCTS

2.01 System Designation CS2 - Carbon Steel

(a) Pipe: Black steel pipe, ASTM A 53 or A 120,Schedule 40, screwed

(b) Fittings

1. Non Potable Water: Malleable iron,ANSI/ASME B16.3, screwed

2. Natural Gas System

a. Malleable iron, ASTM A 197, screwedend, 150 psig rated

b. Steel butt-weld or socket weld typefittings, Schedule 40

(c) Valves: Refer to Section 15100.

(d) Unions: Unions shall be the same material andworking pressure as the fittings specified forthe piping system. Unions on piping 2-1/2-inchesin size and larger shall have a bolted flangedjoint.

2.02 Piping Accessories

(a) Pipe Sleeves: Pipe sleeves shall be providedwhere pipes pass through any concrete slabs.

(b) Bolts and Nuts: Machined brass, stainless steelor galvanized carbon steel, and not smaller than1/4-inch; bolts shall have hexagonal heads andnuts shall be hexagonal.

(c) Solder for Solder-Jointed Tubing: 95 percent tinand 5 percent antimony flux shall be non-corrosive type conforming to FS-F-506.

(d) Fittings that unite dissimilar metals shall bedielectric insulating type.

PART 3 - EXECUTION

3.01 Installation

(a) General: After pipes have been installed eithercap or plug ends of pipes. Neither bury, furr-in, nor conceal piping before piping has beeninspected and tested.


(b) Water Supply System (Non Potable)

1. Trenching: Section 02220, Earthwork

2. Cut pipe accurately to measurementsestablished at worksite; work pipe intoplace without springing and forcing.Install pipe with a fall towards eithershut-off valve or lowest fixture.

3. Remove fins and burrs from piping. Applylubricant to male threads only; threadsshall be full cut, and not more than threethreads on pipe shall remain exposed aftertightening. Coat installed and testedexposed ferrous threads with one coat of redlead and oil paint.

4. Install piping true to line and grade andsupport and guide in a manner which willensure indicated alignment. Installedpiping shall clear obstructions, preserveheadroom, keep openings and passagewaysclear, and not be in same trenches as sewerlines. Install unions on pipe endsimmediately adjacent to valves, equipmentand tanks.

5. Valves shall be accessible for operation andservicing. Stems of installed valves shallnot be below horizontal position.

6. Make-up soldered-to-threaded connectionswith male thread-to-solder adapters.

C. Natural Gas

1. Install and test all piping in accordancewith NFPA 54 National Fuel Gas Code.

2. Installation scheduling of natural gassystem components shall be coordinated withthe building construction schedule to causeno delays in the execution of other protionsof the construction Contract.

3. Underground pipe may be polyethylene gaspiping, Type PE2306M in accordance with ASTMD2513.


3.02 Cleaning and Testing

Refer to Section 01666 of these Specifications.

3.03 Demonstration

(a) The Contractor shall instruct the Trustee'spersonnel in the proper operation and maintenanceof all piping systems components after finalsystem testing is completed.

(b) Provide written confirmation to the Trustee thatall piping systems have been tested and are insatisfactory working order.

END OF SECTION


SECTION 15190

MECHANICAL IDENTIFICATION

PART 1 - GENERAL


(a) Work specified in this Section is subject to theprovisions of the section entitled "BasicMechanical Requirements" of these Specifications.

(b) Furnish and install markers, tags and nameplatesfor mechanical equipment, piping, controls, andvalves to fully identify these items in referenceto a master list.

(c) Furnish a complete list of all equipment, piping,controls and valves with coordinated designationsand locations for each device.

1.02 References

(a) American National Standards Institute (ANSI)Standards

1. ANSI A13.1 Scheme for the Identificationof Piping Systems

1.03 Submittals

(a) Submit product data in accordance with provisionsof the section entitled "Shop Drawings, ProductData and Samples" of these Specifications.

(b) Submit catalog cuts, product samples,installation instructions and any otherinformation required to determine compliance withthe Contract Documents.

(c) Submit complete list of equipment, piping,controls and valves with identification codes andlocations. Coordinate this list with theequipment identifications utilized in othersections of the Specifications and by the varioustrades involved in the work.

12-21-91



(a) All materials of a similar type shall be theproduct of a single manufacturer.

(b) Identification materials shall be manufactured bya company regularly producing this type ofproduct. Materials used shall be specificallymanufactured for identification purposes.

(c) Acceptable Manufacturers of IdentificationProducts

1. W.H. Brady Company

2. Seton Name Plate Corporation

1.05 Sequencing and Scheduling

(a) Coordinate installation of identification deviceswith the installation of the mechanical equipment.

(b) Installation of identification devices may be doneat the equipment manufacturer's factory.

(c) Install identification devices prior to finaltesting and balancing of the mechanical systems.

PART 2 - PRODUCTS

2.01 Pipe Markers

(a) Markers and direction-of-flow arrows for pipingwhich will be accessible for maintenance shall beof semi-rigid plastic.

(b) Letter sizing shall be manufacturer's standard,graduated in accordance to the pipe size.

(c) Marker background color and letter color shall becoded to identify pipe contents in accordance withANSI A13.1.

2.02 Valve Markers

(a) Provide 1-1/2-inch diameter polished brassmarkers, not less than 19 gauge thickness.

(b) Letters shall be 1/4-inch high. Numbers shall be1/2-inch high. Both letters and numbers shall bestamped and black-filled.


(c) Valve marker fasteners shall be either meterseals, four-ply 18 gauge smooth copper wire, brass"S" hooks, or brass jack chain.

(d) Markers shall bear indications corresponding tothe notations on the framed wiring diagrams,control diagrams and operating instructions.

2.03 Equipment Nameplates

(a) Provide 2-1/2 x 3/4-inch aluminum nameplates withblack enamel background and either etched orengraved lettering.

(b) Provide corrosion-resistant fasteners.

(c) Nameplates shall bear indications corresponding tothe notations on the framed wiring diagrams,control diagrams and operating instructions.

2.04 Control Nameplates

(a) Provide laminated colored plastic nameplates withwhite lettering.

(b) Each switch position shall be clearly indicated.

(c) Word nameplates to identify the respective productand function.

(d) Provide corrosion-resistant fasteners.

PART 3 - EXECUTION

3.01 Pipe Markers

(a) Install adjacent to each valve and fitting.

(b) Install at each pipe passage to underground.

(c) Install on 25 foot centers on horizontal piperuns.

3.02 Valve Markers

Fasten to valve body in a manner which will facilitatebeing easily read.

3.03 Equipment Nameplates

Mount securely to the appropriate piece of equipment.


3.04 Control Nameplates

Mount securely to the appropriate control device suchthat switch position and control function are easilyread.

END OF SECTION


SECTION 15250

MECHANICAL INSULATION

PART 1 - GENERAL


(a) Work specified in this Section is subject to theprovisions of Section 15051.

(b) Furnish and install thermal insulation forequipment and piping.

(c) Furnish and install electrical heat tracing tothe extent indicated in the Contract Documents.

1.02 References

National Fire Protection Agency (NFPA) Standards

1. NFPA 255 Method of Test of Surface BurningCharacteristics of Building Materials


(a) Insulation products shall have a Flame SpreadRating not exceeding 25 and Smoke DevelopedRating not exceeding 50.

(b) Installation shall be performed by workersskilled in the fitting and installation ofinsulation products.

1.04 Submittals

(a) Submit product data in accordance with theprovisions of Section 15051 and Division 1.

(b) Submit catalog cuts, performance data, sealingtape, mastic and all other information requiredto demonstrate compliance with the ContractDocuments.

(c) Submit manufacturer's installation instructions.

12/21/91


PART 2 - PRODUCTS


Acceptable manufacturers of insulation products areCertainTeed, Knauf, Manville and Owens-Corning.

2.02 Equipment Installation

Materials: Equipment insulation shall be glass fiberboard with factory applied foil-skrim-kraft vaporbarrier. Thermal conductivity shall not exceed 0.25BTU-in/h-ft2-F at 50 degrees F.

2.03 Pipe Insulation

(a) Materials

1. Preaolded cellular glass thermal insulationin accordance with ASTM C552 fabricated forstandard pipe sizes, fittings and valves.

2. Maximum thermal conductivity of 0.38BTU-in/h'ft2-F at 70 degrees F in accordancewith ASTM C177 and C518.

3. Maximum water vapor permeability of 0.00perm-in when tested in accordance with ASTME96.

4. Average density of 8.5 lb/ft3

5. Maximum Flame Spread Rating of 5 and Smoke-Developed Rating of 0 when tested inaccordance with NFPA 255.

6. Utilize installation adhesives and jointsealants as recommended by the insulationmanufacturer.

7. For piping above ground, install 24 gaugestainless steel jacketing over insulationretained by stainless steel bands. Forpiping underground, install PVC secondarycontainment over insulation.

8. Insulation products shall be equal toPittsburgh Corning Foamglass.


(c) Description

1. Insulate all: Hide pile gas piping (HPG)and above grade nitrogen distributionpiping.

2. Piping insulation thickness shall be 1-1/2-inches for pipes over 2-inches and up to 4-inches, and 2-inches for pipes over 4-inches.

2.04 Electric Heat Tracing

A. Self-Regulating Heat Tracing - Piping

1. 16 AWG copper bus wire with self-regulating,semi-conductive core

2. Tinned copper shield over bus wire and core

3. Modified polyolefin jacket over shield

4. Nominal wattage of 5 watts/foot at 50degrees F

5. Nominal service voltage is 120 volts ACunless noted otherwise

6. Coordinate circuit sizing with availableelectrical circuits shown on the ElectricalDrawings

7. Provide power connection kits, splice kits,end seals and other accessories required fora complete operating system. Electricalaccessories shall be NEMA 4X rated.

8. Provide NEMA 4X thermostat on each heattrace circuit to sense pipe temperature andenergize heat tracing below setpointtemperature.

9. Heat trace system shall be equal to RaychemChemelex BTV-CR.

10. Provide aluminum tape under and over heateron FRP pipes to be heat traced.


PART 3 - EXECUTION

3.01 Installation

(a) Insulation shall be installed in accordance withmanufacturer's recommendations.

(b) Insulation butt joints shall be sealed with tapea minimum of 2-inches wide matching the characterof the insulation vapor barrier.

(c) Insulation bonding must be by glue, self-adhesivelap or tape. Staples are not permitted. Sealall vapor barrier punctures.

(d) Surface to be insulated and insulation shall beclean and dry during installation.

3.02 Pipe Insulation

(a) Pipe hangers shall be outside of the pipeinsulation.

(b) Install pipe insulation on exterior pipe to adepth at least as deep as the frost line (42-inches below grade).

(c) Seal edges of pipe insulation with approvedmastic to create a water and vapor proof seal.

3.03 Electric Heat Tracing

(a) Install heat tracing in strict accordance withthe manufacturer's instructions prior toinsulation.

(b) Spiral wrap heat tracing around pipe, valves, andfittings as required to attain wattage densitiesnoted.

(c) Provide additional wattage for valves andfittings in accordance with the manufacturer'sinstructions.

(d) Secure heat trace cable to piping and components.

(e) Coordinate heat trace installation with theelectrical work.

(f) Thermostat Setpoint Temperatures: 70 degrees F


(g) Heat Trace Wattage Densities: Heat trace HIDEgas pile (HPG).

Pipe Size, inches Watts/Foot

2 and smaller 5.03 5.66 11.2

(h) Provide pipe markers cautioning "DO NOT CUTINSULATION - ELECTRIC HEAT TRACING - SHOCKHAZARD". Apply markers as specified in Section15190 Mechanical Identification.

END OF SECTION


SECTION 15300

BELOW GRADE GAS COLLECTION SYSTEM

PART 1 - GENERAL

1.01 Work Included

(a) The specifications and accompanying drawings areintended to cover the provisions of all labor,material and equipment necessary for the completeGas Collection System for the Industri-Plex SiteRemedial Trust in Woburn, Mass. Any reference toa specific manufacturer is to establish astandard of quality. Substitution of equipment ofequal or better quality is acceptable. It becomesthe Contractors responsibility to coordinate,adjust, and install the new equipment inaccordance with the manufacturers recommendationsand workmanlike practices which includesnotification of and coordination with the othertrades on the project.

(b) It is the intent and purpose of thesespecifications and accompanying drawings to coverand include under each item all materials,machinery, apparatus and labor necessary toproperly install, equip, adjust and put intoperfect operation the respective portions of theinstallation Specified and to so interconnect thevarious items or sections of the work as to forma complete and properly operating whole.

(c) Any equipment, apparatus, machinery, material andsmall items not mentioned in detail, and labornot hereinafter specifically mentioned, which maybe found necessary to complete or perfect anyportion of the installation in a substantialmanner, and in compliance with the requirementsstated, implied or intended in thesespecifications. This shall include all materialsdevices or methods peculiar to the machinery,equipment, apparatus or systems furnished andinstalled by this Contractor.

12/21/91

15300-1 Jordon, Jones & Goulding

1.02 Related Work Specified Elsewhere

(a) Controls - Section 15950

1.03 Laws and Permits

(a) This Contractor shall obtain all necessarypermits or licenses, arrange for and run alltests on any or all parts of his work as may berequired by State and/or local authorities. Thistrade shall perform all work in strict compliancewith all laws, regulations and/or codes applying,including those of the Federal, State orMunicipal; National Fire Protection Agency; BOCA,OSHA, and any other authority having jurisdic-tion, within requirements of these specifica-tions. Four copies of all certificates andpermits shall be submitted to the TrustRepresentative. All the associated fees for theabove shall be paid by contractor.

PART 2 - PRODUCTS

2.01 Materials and Equipment

(a) All materials and equipment installed by thistrade shall be new and the best of their kind andshall conform to the grade, quality and standardsspecified herein.

(b) All material and equipment offered under thesespecifications shall be limited to productsregularly produced and recommended by themanufacturer for the service intended. Thismaterial and equipment shall have capacities andratings sufficient to amply meet the requirementsof the project. The capacities and ratings shallbe in accord with those published by themanufacturer and be in accord with engineeringdata or other comprehensive literature madeavailable to the public by the manufacturer andin effect at the time of ordering.

(c) Equipment shall be installed in strict accordancewith manufacturer's instructions for type andcapacity of each piece of equipment used. Thistrade shall obtain these instructions from themanufacturer, and these instructions shall beconsidered part of these specifications. Noexperimental material or equipment shall bepermitted.

15300-2 Jordon, Jones & Ooulding

2.02 Supports

(a) The Contractor shall furnish and install allsupports, including angles, channels and beamsfor the support of all equipment and pipinginstalled under this contract. All piping shallbe arranged to maintain the required pitch andprovide for proper expansion and contraction.

(b) All lines shall be rigidly and firmly installedto prevent swaying, vibrating and sagging.Piping supported from underneath and not subjectto expansion shall have adjustable pipe saddlesupports on properly sized pipe stanchons. Saddlesupports shall be equal to Grinnell, figure 264of Fee and Mason, figure 291. For piping runningnear floor, use brackets or pedestals, dependingupon the space through which the pipe passes.Provide additional supports for heavy valves andspecialties.

(c) The use of pipe hooks, chains, or perforatedmetal straps for pipe supports will not bepermitted.

(d) The Contractor shall provide for supporting andguiding piping, structural supports consisting ofchannels, angles, etc., these being placed aroundthe piping systems and attached to the existingstructural members. At certain locations,channels and angle irons shall be installed inwhich pipe rollers shall be placed to support thepiping.

(e) All supports shall be teflon coated, minimum 5mil.

2.03 Anchors

(a) Anchors shall be constructed of structural steel,being continuously welded together and anchoredto the structure.

(b) Anchors shall suit the design of the structure atthe place of anchoring.

(c) Contractor shall submit detailed dimensioneddrawings of the anchors to the TrustRepresentative for his approval.

15300—3 Jordon, Jones & Ooulding

2.04 Pipe and Fittings

(a) All gas collection piping shall be as specifiedin the following schedule with manufacturer'sstandard symbol on each length.

(b) All connections to equipment on piping shall beflanged, standard weight pattern, with face andgasket to match the equipment flange.

(c) Type of piping to be installed for the variousservices shall be as specified in the followingschedule:

SYSTEM

Gas Collection Piping

SCHEDULE

A

(d) All valves shall be selected for not less than150 psi or 150% of normal working pressure,whichever is greater.

(e) All valves for this project shall be the productof one manufacturer when possible.

COMPONENT

Pipe

Perforated Pipe

Fittings

Valves

Gaskets

SCHEDULE A

DESCRIPTION

All sizes 100 Ib. Class vinyl esterresin filament wound fiberglass pipe inaccordance with ASTM D2992-A and ASTMD2996-71.

Same as above with 1/2" dia holes, 4"O.C. both sides 180 deg. apart.

Compression molded vinyl ester resinbase with min. 39% chopped glass fiberreinforcement.

Quarter turn butterfly valves damperstyle ANSI full face flat flanges,body-PVDF, disc-PVDF, seats and sea1s-vitron, pneumatic operator.

1/8" thick, 60-70 durometer, full facetype suitable for the service.

15300-4 Jordan, Jonem & Ooulding

2.05 Bidirectional Detonation Flame Arresters

(a) Arrester housing - welded 316 stainless steel.Crimped metal arrester element - 316 stainlesssteel in a stainless steel element housing.Arrestor shall be capable of quenching a flamefront velocity of 5,800 ft/sec with pressures inexcess of 500 psig. 150 # A.N.S.I. R.F. flanges.Flame arrestor shall be equal to Protectosealseries # 25000.

2.06 Polymerized Concrete Vaults

(a) Underground enclosure shall be Composolite asmanufactured by Quartite Corp. or equal.Enclosures and covers shall be gray color andrated for no less than 5,000 Ibs. over a space10" x 10" area and be designed and tested totemperatures of -50 deg F. Material compressivestrength shall be no less than 9,000 psi.Provide locking cover and neoprene gasketing forwatertight service. Provide a breather anti-floodvalve mounted in one cover section for each vaultas detailed on Sheet 15-2. Breather valve shallbe an inverted foot valve with the screen on theopposite end. Material shall be PVC asmanufactured by Hayward True Check type orapproved equal.

PART 3 - EXECUTION

3.01 Preparation

(a) The Contractor shall work in conjunction witheach of the other trades to facilitate proper andintelligent execution of work and with minimum ofinterference.

(b) The Contractor shall carefully examine allmechanical drawings and shall be responsible forthe proper fitting of all material and equipmentas planned and without interference with otherpiping or equipment. Proper judgment shall beexercised to secure best possible spaceconditions throughout; to secure neatarrangements for piping, and conduit; and toovercome all local difficulties and interferenceto best advantage. Approval of any and allchanges to plans and specifications shall beobtained from the Design Engineer beforeproceeding.


(c) Carefully examine the specifications anddrawings, visit the Site and fully informthemselves as to all existing conditions andlimitations to be met.

(d) Should any discrepancies occur between theexisting conditions and the drawings andspecifications, they shall be reportedimmediately to the Design Engineer forclarification.

(e) This Contractor shall be responsible for deliveryof equipment and shall unload and store same in amanner not to interfere with operations of othertrades.

(f) All work and methods of executing same underthese specifications shall be completed in anapproved first class workmanlike manner and shallconform to the best mechanical practice.

(g) Before ordering any material or doing any workthis trade shall verify all measurements at thebuilding and Site, and shall be responsible forcorrectness of same. Any difference which may befound shall be submitted to Trust Representativefor consideration before proceeding any furtherwith the work.

(h) This trade shall layout work and establishheights and grades for all lines, and equipmentin strict accordance with the intent expressed bythe drawings, and all the physical conditions andshall be responsible for the accuracy of thesame.

3.02 Installation

(a) Install all valves shown on the diagrams andspecified herein without strain on the pipingsystem.

(b) All piping connecting to all other equipmentshall be installed without strain at theconnection to this equipment. All piping shall beclean before connecting to equipment.

(c) All work, equipment and materials shall beprotected at all times.

15300-6 Jordon, Jones & Goulding

(d) All piping openings shall be closed, with caps orplugs during installation. All equipment shallbe tightly covered and protected against dirt,water, chemicals or mechanical injury duringentire progress of installation. The Contractorshall make good all damage caused either directlyor indirectly by his workmen.

(e) All pipe connections shall be made so as to allowfor perfect freedom of movement for piping duringexpansion and contraction, without springing orcreating air pockets.

(f) All piping shall be installed in the bestworkmanlike manner and in accordance with thebest practices of the trade as shown on thedrawings and required for the completeinstallation of the systems.

(g) Piping shown on drawings show the general run andconnections, Contractor shall be responsible forerecting the piping suitable in every respect forthe work. Piping shall be installed so thataccess, clearance and pitch are maintained.

(h) Contractors of the various trades shallcoordinate the installation of materials andequipment to assure a smooth and uninterruptedflow of the project.

(i) Keep all openings in pipes or fittings plugged orcapped during installation.

(j) Check drawings of the various trades so thatpiping will not interfere with equipmentinstallation or other piping systems so thatequipment can be serviced or replaced withoutexcessive pipe removal.

(k) Valves and specialties shall be so placed topermit easy operation and access. All valvesshall be regulated, packed and adjusted beforeacceptance.

(1) Should leaks develop in the various systems afterthey have been placed in operation, it shall bethe responsibility of the Contractor to repairthem


3.03 Joining of Pipe and Fittings

(a) Cut and taper piping to be joined to fittings.Pipe and fittings shall be joined with vinylester adhesive using matching tapered couplingand spigot in accordance with ASTM D2310-71 &D2517-73.

(b) All fittings used on the piping system shall beof an approved manufactured type, and tees andelbows shall be with wall thickness not less thanthe pipe.

3.04 Joining of Pipe and Vault

(a) Cut and taper piping to be joined to vaults. Pipeand vaults shall be joined with vinyl esteradhesive using matching tapered cuts inaccordance with ASTM D2310-71 & D2517-73.

3.05 Joining of Vault Segments

(a) All joints of the assembled vaults shall bejoined with vinyl ester epoxy resin adhesive inaddition to joining adjacent vaults at all pointsof contact paying special attention to cut-outsand perimeter application. Vaults shall be madewater tight.

3.06 Installing Underground Pipe

(a) The final bedding of the trench must be uniformand continuous. Remove all sharp rocks and otherabrasive material from the trench bottom. If thetrench is excavated through rock or shale ledges,the trench must be slightly deeper and a layer ofclean backfill used in the bottom of the trenchand over the pipe to assure protection of thepipe from the rocks.

(b) The installation shall be backfilled withsufficient fill to hold it in place with all ofthe fittings and joints left open for inspectionduring the testing period, once the testingperiod is complete, then the backfilling may befinished. Use only clean backfill.

15300-8 Jordon, Jones £ Ooulding

3.07 operating Adjustments and Testing

(a) The Contractor shall adjust each and every partof the new system and submit the necessaryreports as required by the Trust Representative.All equipment must be adjusted so that no vibra-tion or sound is transmitted to adjacent areas.

(b) All piping systems shall be completely tested andproven tight for a period of twenty-four hours

(c) Test all piping to a pressure of 150 psi or 1.5times the operating pressure, whichever isgreater, for a period of 12 hours.

(d) Should leaks develop in any part of the pipingsystems, these defective sections, fittings,etc., must be removed and replaced as caulkingwith metal or compound will not be permitted.

END OF SECTION

15300-9 Jordon, Jones £ Goulding

SECTION 15483

WASTE GAS COMBUSTION FLARE SYSTEM

PART 1 - GENERAL

1.01 Scope

Furnish and install waste gas combustion flare systemof the size, type, capacity and characteristicsdescribed within the Contract Documents and shown onthe Drawings, with components and appurtenancesrequired for a safe, complete operating system.

1.02 References

A. Underwriter's Laboratories (UL) Standards - ULListed Label

1. UL 181 Factory Made Air Ducts andConnectors

(b) Factory Mutual (FM) System - FM Approval Label

(c) National Fire Protection Association (NFPA)Standards

1. NFPA 70 National Electrical Code

2. NFPA 54 National Fuel Gas Code

3. NFPA 82 Standard of Incinerators,Waste and Linen HandlingSystems and Equipment.

(d) American Society for Testing and Materials (ASTM)

1. ASTM D 2992 Standard Method for ObtainingHydrostatic Design Basis forReinforced ThermosettingResin Pipe (RTRP) andFittings

12/21/91


2. ASTM D 2996 Standard Specification forFilament Wound RTRP

3. ASTM E 84 Test Method for SurfaceBurning Characteristics ofBuilding Materials

(e) American National Standards Institute (ANSI)

1. ANSI B16.52 Chemical Plant and PetroleumPipe Code

(f) Massachusetts Fuel Gas Code, 1990

(g) BOCA National Mechanical Code, 1990

(h) BOCA National Fire Prevention Code, 1990

(i) Local Codes and Ordinances


(a) All flare system components shall be provided andassembled into a complete operating system by asingle manufacturer.

(b) All flare system components shall be factorymounted and pre-wired on a single equipment skid.

1.04 Submittals

(a) Submit shop drawings and product data inaccordance with Division 1 and Section 15051.

(b) Submit the following additional information:

1. Certified performance data for destructionefficiency at the design flow rate for thespecified waste gas stream analysis.

2. Installation and start-up instructions.

3. Number of shipping packages and shippingdimensions

4. Equipment capacities

5. Utility requirements

6. Operating weight


PART 2 - PRODUCTS


Acceptable manufacturers are NAO and McGillEnvironmental

2.02 Flare

(a) Waste gas burner shall have a ANSI 150 poundraised face flanged waste gas connection.Burning capacity shall be not less than 9,000SCFH gas of 0.60 specific gravity, at 13-inchesW.C. inlet pressure. Gas stream to be burnedshall have the following approximate analysis:

1. Hydrogen Sulfide - 0.3 percent2. Trace Volatile Organics (benzene, toluene,

dichlorobenzene, chlorobenzene, ethylbenzene) - 0.004 percent

3. Methane 0-24 percent4. Remainder of gas will be composed of carbon

dioxide with potential concentrations of air5. Gas stream may be saturated with moisture.

(b) Utilities Available: Natural gas 1,000 BTU/CF,10 psig, electricity 460 volts, 3 phase.

(c) Gas burner shall be temperature and aircontrolled to provide up to 1,800 degrees Fsustained internal combustion temperature whenassisted with 10 psig natural gas. Destructionefficiency shall be 99 percent for hydrogensulfide (H2S).

(d) Automatically controlled electric air dampersshall be provided integral to the burner unit toadmit combustion air and control combustiontemperature by air quenching.

(e) Burner shall be self supporting. Burner shallnot require baffles, downdraft preventers, flamescreens, or secondary stacks for flame stability.Pilot piping and stack chamber wall shall becarbon steel. Stack chamber refractory liningshall be low density ceramic rated for continuousoperation up to 2,300 degrees F.

(f) Pilot gas and waste gas stream shall be mixed andignited at ground level within burner stack.Assist gas main and pilot valve and regulatorpackage shall be mounted exterior to thecombustion chamber in a non-hazardous location.


(g) Continuous flame nozzle shall be mounted integralto burner and shall have long profile flame.Pilot shall be inclined off vertical. Pilotflame shall extend through waste gas flow profileto ensure ignition from low to high flow rates.Unprotected pilot shall withstand winds up to 100mph. Pilot shall be capable of operating onnatural gas supplied to venturi at 10 PSIG.

(h) Waste gas burner head and integral end-of-lineflame arrester shall be constructed of 316stainless steel. Flame arrester shall be ULlisted.

(i) Provide four 4-inch diameter capped test portsmounted as indicated on the Drawings.

(j) Automatic ignition system shall consist of thefollowing components:

1. Heavy wall 316 stainless steel continuouspilot nozzle which shall burn astoichiometric air/gas mixture.

2. Heavy wall 316 stainless steel thermowellwith insulated thermocouple installed incombustion chamber.

3. Assist gas burner with 316 stainless steelgas ring and flame retainers.

4. Valve and regulator package for controllingassist main and pilot fuel gas. Packageshall include isolation valves, pressureregulators, pressure gauges, and explosionproof solenoid valve. All components shallbe copper free and installed on a mountingpanel.

5. Spark ignition pilot assembly shall includeNEMA 7 enclosure, spark ignitiontransformer, spark plug, and pilot UV flamescanner. Gas inlet connection shall be NPTand shall be fitted with a flame checkunion. Solid state automatic ignitioncontroller and spark generator mounted in aNEMA 7 enclosure. Controller shall have asingle point electrical connection at 120volt, single phase, pre-wired to the systemtransformer. Components shall be FMapproved or UL listed.


(k) Control panel shall be mounted in NEMA 4Xenclosure and shall include the followingfeatures:

1. PLC programmed by flare manufacturer withall safety interlocks.

2. Pilot flame monitoring by UV scanning.

2. Status lights for Solenoid Valve Position,Ignition On, Pilot On, and Flame Failure.

3. Adjustable combustion chamber thermocouplesetpoint controller.

4. Interlocks shall include low/high water seallevels, pilot flame failure, and high unittemperature.

5. Manual ignite button.

6. SPOT contacts for remote indication of PilotOn/Off and System Alarm functions.

7. Capability for repeated ignition cycle.

8. Provision for remote start upon receipt of4-20 ma DC signal.

9. Controller enclosure heater with thermostat.

10. Combustion air damper controller.

11. Assist main gas controller.

12. Audio-visual alarm on top of enclosure.

13. Combination starters and disconnect switchesfor gas booster blowers.

14. Main overcurrent protective device.

15. Numbered terminal strip for future outputs.

(1) Continuous Emissions Monitoring Systems (CEMS)shall consist of the following:

1. H2S total reduced sulfur analyzer.

2. Free standing NEMA 4X enclosure with airconditioner and heater.


3. Open hastelloy sample probe with overboardcalibration.

4. Fully automatic sample conditioner withautomatic calibration, sample line blowback,T.E. chiller, heated sample pump, continuouscondensate drain, low flow and moisturebreakthrough sensor/alarms, and a heatedpyrex inertial separator. Calibrationfrequency shall be as a minimum configurableto once daily, or per latest USEPArequirements.

5. Data acquisition system for self-diagnostics and data manipulation. Systemto include connections to a remote computer,hard drive, keyboard, CRT display, printerand software capable of providing reportsfor hourly and daily summaries, calibrationdrift and exceedance alarm logs. Minimumscan time for sampled inputs shall be onceper minute, or per the latest USEPArequirements.

6. 4-20 mA isolated output.

7. Upon I S detection the control system shallalarm at annunciators and provide alarmcontact to control system (by others).

8. Numbered terminal strip for future outputs.

(m) A single point connection shall be provided for460 volt, 3 phase power. All requiredtransformers and low voltage power supplies shallbe provided and pre-wired. A minimum of 72 hoursof emergency power shall be provided for orderlyshutdown of the PLC without program or setpointloss and activation of the audio-visual alarm andremote alarm outputs. All system componentsshall be interlocked and pre-wired.

2.03 Flare Accessories

(a) Valves

1. Provide gas butterfly valves as indicated onthe Drawings and as specified in Section15920 of these Specifications.

2. Provide nonpotable water and gas valves asindicated on the Drawings and specified inSection 15100 of these Specifications.


3. Provide an IRI/FM approved gas train asindicated on the Drawings.

4. Provide gas safety and control equipment asindicated on the Drawings and specified inSection 15484 of these Specifications.

5. Provide all instrumentation indicated on theProcess and Instrumentation Flow Diagram,Layout Drawings, and specified herein.

(b) Water Seal

1. Provide carbon steel water seal tank withI/8-inch corrosion allowance. Tank shall befactory primed and have a finish coat ofwhite epoxy paint.

2. Provide with 3-inch 150 pounds ANSI RF FSflanged gas inlet and outlet connections, 1-inch IPS water fill with mechanical floatand valve, handway with cover plate, liquidlevel switch connections with high and lowlevel float type liquid level switches, 2-inch IPS drain with valve, level gauge,skimmer outlet with spring return safetyvalve, and plugged sample connection ondownstream side of water seal. Provide withpressure relief and flame trap. Low andhigh level switches shall be interlockedwith the control panel.

(c) Water Seal Storage Tank

1. Provide a water tank to serve the waterseal. The tank shall have a minimumcapacity of 55 gallons. Tank and supportsshall be factory primed and have a finishcoat of white epoxy paint.

2. Provide with steel mounting supports andmount at an elevation above or equal to thewater seal water fill connection.

3. Provide with low level switch interlockedwith the control panel, 1-inch IPS drainwith valve, vent to atmosphere, and fillconnection.


4. Water used in the water seal and the storagetank shall be mixed with ethylene glycol fortold climate protection in a proportion of50 percent water and 50 percent glycol.

(d) Gas Booster Blowers (HP-F-1A and HP-F-1B):Provide two high pressure gas booster blowers,each blower shall be as described below:

1. 150 SCFM

2. 7-1/2 HP maximum

3. 40-inch W.G. (minimum total pressure)

4. 460 volt, 3 phase, 60 Hz

5. Stainless steel, sparkproof, Class Aconstruction

6. TEFC motor (explosion proof), 1.15 ServiceFactor

7. Weather cover

8. The gas booster blowers shall be fullyassembled and shop run tested.

9. Variable Speed Drive

a. Type: Input diode bridge full waverectifier and output inverter capableof producing a constant volts per hertzvariable frequency pulse widthmodulated output suitable for operatinga standard squirrel cage inductionmotor. Drive shall be two circuitboard design with logic components onone board and power components on theother.

b. Ratings

(1) Speed Range: 6 to 60 Hertz with avariable torque load.

(2) Efficiency: 95 percent minimum at100 percent speed.

(3) Service Factor: 1.0 continuous;1.5 for one minute.

(4) Speed Regulation: 3 percent.

c. Equip drive with adjustments forminimum speed, maximum speed,


acceleration-deceleration rate andcurrent limit.

d. Protective Features

(1) Input molded case circuit breakerrated 22,000 AIC to disconnect thedrive and control circuits.

(2) Output contactor to disconnect themotor when the drive is off.Interlock contactor with drive toprevent starting unless the driveis at zero volts and hertz.Provide restart delay to allowequipment to coast to rest beforerestarting. Output contactor maybe rated in accordance with NEMAor IEC standards.

(3) Solid state protective circuitswith diagnostic capabilities forover/under voltage, loss ofvoltage, inverse time andinstantaneous overcurrent, phaseloss, phase unbalance, and thermaloverload. Activation of allprotective functions shall beaccomplished without damage to thedrive and without need to replaceany components. Over/undervoltage and loss of voltage are toreset automatically when voltagereturns to normal; all otherconditions are to be manuallyreset.

(4) Provide protective circuitry, ifnot inherent in the drive design,to shut down without damage to thedrive if an out of synch conditionoccurs (i.e. running driveconnected to a stopped motor, plugreversal or motor stall).

(5) Where motor temperature switchesare specified, provide circuitryto shut down the drive if theswitch opens.

e. Input Voltage and Phase: 480 volt,three phase.

f. Enclosure: Free standing. Enclosureshall meet NEMA 4 requirements.


10. Equip motors with heavy, self-aligning,sealed ball bearings rated for a B-10 lifeof 100,000 hours, fitted with pressurelubrication fittings.

(e) Piping

1. Fiberglass Reinforced Piping (FRP)

a. Pipe shall be manufactured by afilament winding process using athermosetting epoxy resin to impregnatestrands of continuous glass filamentswhich are wound around a mandrel at aprescribed helix angle and undercontrolled tension. All pipe shall besupplied with a matching taperedintegral bell and tapered spigot ortapered coupling and a matching taperedspigot.

b. Piping shall be rated for 225 psig(minimum) at 225 degrees F (minimum) inaccordance with ASTM D 2992 - ProcedureA.

c. Piping shall have continuous glassfiber filament wound at a 35-1/4 degreehelix angle in a matrix of epoxy resin.Pipe shall be in compliance with ASTM D2996 and classified by its designationcode. Pipe shall meet all dimensionaland performance requirements andmechanical properties.

d. Pipe shall be filament wound over twolayers of epoxy resin saturatedsurfacing veil liner with final nominalliner thickness of 30 mils. Glass toresin ratio for the liner shall be 85percent resin by weight minimum.

e. Flanges shall be flat-faced and drilledin accordance with ANSI B16.5, Class150, bolt hole standards. Flangesshall be compression molded with aminimum of 45 percent chopped glassfiber, or filament wound.


f. Compression molded fittings shall bemanufactured using an epoxy moldingcompound. The molding compound shallbe reinforced with a minimum 45 percentchopped glass fiber. In-line fittingsare filament wound.

g. Fabricated fittings shall bemanufactured using pipe filament woundat a helix angle of 35-1/4 degreeswhich has been meter cut and bondedtogether. The bonded segments shall bereinforced by hand-laying glass clothimpregnated with epoxy resin.Additional reinforcement shall beprovided by a spray-up process usingresin and randomly oriented choppedglass fibers.

h. Gaskets shall be 1/8-inch thick, 60-70durometer, full face type suitable forthe service.

i. Adhesive and curing agents shall beepoxy.

j. Pipe and fittings will be joined withepoxy adhesive using matching taperedbell/coupling and spigot.

k. Install piping in accordance with themanufacturer's recommendations.

1. Support pipe as indicated on theDrawings, and in accordance withSection 15094 of these Specificationsand the manufacturer's recommendations.

m. Clean and test piping in accordancewith Section 01666 of theseSpecifications.

n. Piping shall contain waste gas only.

o. Piping shall be suitable for outdoorapplication.

p. Flame spread shall be less than 25 asdetermined by ASTM E-84.


q. Flanged Connections: Flanges shallmeet ANSI B16.5, Class 150 bolt holestandards. Gasketing materials shallbe full face, 1/8-inch thick with aShore A hardness of 60 to 70 durometer.Gaskets made from teflon and FVC arenot acceptable.

2. Carbon Steel Piping (CS2): See Section15101 - Process and Utility Piping Systemsof these Specifications.

3. Insulation and heat tracing of FRP pipingshall be applied and installed in accordancewith Section 15250 of these Specifications.

(f) Instrumentation

1. All provided field and panel mountedinstruments shall be in accordance with theInstrument Society of America (ISA)recommended practices.

2. All devices shall be industrialized innature, no primary HVAC devices shall beallowed.

3. All control valves, relief valves andflowmeters shall be provided with detailedsizing calculations to ensure their properapplication to the particular function.

4. The following list of suggested vendorsprovides a guideline for quality of theequipment to be provided with the system. Adetailed Bill of Materials shall besubmitted with the proposal.

a. Control Valves: Fisherb. Regulators: Fisherc. Level Switches: Magnetrold. Pressure Switches: Ashcrofte. Pressure Gauges: Ashcroft, Chemical

Duty, 4-1/2-inchf. Solenoid Valves: ASCOg. Pressure Relief, High Pressure: Crosbyh. Pressure Relief, Low Pressure:

Protectoseali. Thermocouples: By Vendorj. Panel Controllers: Moore Products,

Honeywellk. Analytical Systems: By Vendor1. Gas Flowmeters: By Vendor


m. Programmable Controllers: Modicon,Allen Bradley

5. A unit specification sheet, in accordancewith ISA SP-20 shall be provided with eachinstrument. Each device must have its ownstainless steel tag permanently attached tothe device.

2.04 Sequence of Operation

(a) Ignition Sequence: On receipt of manual start orremote start signal the following occurs:

1. Water seal level switches shall be open;either closure shall lock out system.

2. Prepurge cycle of minimum of 30 seconds toremove gases from combustion chamber.

3. Pilot solenoid opens and gas is ignited byspark ignitor. Repeated ignition tries willlock out system. Pilot ignition shall beproved by UV flame scanner.

4. Main assist gas valve is opened bycontroller to ignition by pilot. Mainassist gas shall be proved by UV flamescanner.

5. Combustion chamber is heated untilthermocouple setpoint is satisfied.

6. Waste gas valve is opened by controller forcombustion of waste gas stream.

(b) Combustion Temperature Control

1. Chamber temperature minimum and high limittemperature shall be detected bythermocouple. Thermocouple signal shallallow controller to open air inlet damperfor prefire heating of chamber and quenchingwhen temperature setpoint is exceeded. Highunit temperature shall lock out system.

2. Main assist gas valve shall be modulated toprovide gas to maintain unit setpoint.


(c) Gas Booster Blower Sequence

1. Auto start sequence shall be initiated.

2. Waste gas valve shall open.

3. On confirmation that waste gas valve isopened, primary blower shall start and rampup to PIC output.

4. If, after preset time primary blower doesnot start, secondary blower shall start andramp up to PIC.

5. If after preset time secondary blower doesnot start, the system shall initiate safetyshutdown sequence.

6. The suction pressure is maintained by a PICcontroller operating from the absolutepressure transmitter (PIT). The controlleroutput varies the blower suction pressurethrough the blower variable frequency drive.

(d) Shutdown Sequence: Manual or remote start signalis disengaged or safety interlock tripped:

1. Waste gas valve closes and blower stops.

2. Main assist gas valve closes.

3. Pilot gas solenoid closes.

4. Automatic air damper opened by controllerfor a minimum of one minute to purgecombustion chamber.

(c) Relief Gas Valve: Upon unit shutdown, the reliefgas valve shall open; when the unit is activated,the relief gas valve shall close.

2.05 Equipment Insulation and Finishes

(a) Equipment shall be factory-insulated and finishedas described herein and in Section 15250 in thelocations shown on the Drawings or otherwisedescribed in these Specifications.

(b) Factory and field-applied finishes shall becompatible with the service application for theprotection of the equipment.


PART 3 - EXECUTION

3.01 General

(a) Manufacturer's representative shall be present atand provide a minimum of two days assistance atsystem start-up.

(b) Provide operation and maintenance instruction toTrustee's personnel.

3.02 Installation

(a) Install in accordance with manufacturer'srecommendations, Contract Documents, Codes andOrdinances.

(b) Add 50 percent ethylene glycol to water seal andwater seal storage tanks in accordance with themanufacturer's recommendations.

3.03 Testing

The entire system shall be factory run tested beforedelivery to the job site.

END OF SECTION


SECTION 15484

GAS SAFETY AND CONTROL EQUIPMENT

PART 1 - GENERAL

1.01 Scope

(a) This section covers all piping, fittings, valvesand accessories for natural, manufactured orwaste gas handling exclusive of service entrancepressure regulation and piping and valving ofgas-using appliances.

(b) Furnish all labor, materials, equipment andincidentals required to complete and make readyall appurtenances as shown on the Drawings and asspecified herein.

(c) The equipment shall include, but is notnecessarily limited to, the following:

1. Flame Arrester

2. Flame Checks

3. Relief Valve and Flame Trap Units

4. Explosion Relief Valves

5. Pressure Regulators

(d) Work included elsewhere:

1. Natural Gas System

2. Waste Gas Combustion Flare System

1.02 Related Requirements

Section 15483 - Waste Gas Combustion Flare System

12/21/91



(a) All products shall be new and of first quality.

(b) All products shall have all surfaces in contactwith the flowing medium to be corrosion-resistant.

(c) Installation of gas safety equipment shall becompliant with the following:

1. National Fire Protection Association (NFPA)Standards:

a. 54-87 National Fuel Gas Codeb. 70-90 National Electric Codec. 328-82 Flammable Liquids and Gases in

Manholes, Sewers

2. Massachusetts State Fuel Gas and PlumbingCode

3 . Local Codes and Ordinances

PART 2 - PRODUCTS

2.01 Gas Safety Equipment

(a) Flame Arrester Unit

1. Flame arrester shall have flangedconnections. Flow capacity shall be 330 SCFHfor natural gas of 0.60 specific gravity.

2. Net free area through flame arrester bankassembly shall not be less than four timesthe corresponding size standard pipe.Housing shall be off-set with a 1/2-inch NPTdrain connection at the low point. Entirebank assembly shall slide easily out of thearrester housing to facilitate inspection andcleaning. It shall not require support foralignment, and shall not place a strain onconnecting piping. Bank frame shall beextensible, and shall be filled withcorrugated rectangular shaped bank sheets.Sheets shall be arranged for individualremoval. Flame arrester for verticalinstallation shall be self-draining. Flamearrester for horizontal installation shallinclude an offset housing with a 1/2-inch NPTdrain connection at the low point.


3. Flame arrester housing shall be constructedof 367 HT loto copper cast aluminum. Bankassembly shall include a low copper aluminumframe with 316 stainless steel bank sheets.

4. Flame arrester unit shall be manufactured byVarec.

(b) Flame Checks

1. Flame checks shall have NPT connections.Flow capacity shall be 45 SCFH for naturalgas of 0.60 specific gravity at 1.5-inch W.C.pressure drop. Housing shall be of "pipeunion" design to permit easy disassembly forinspection and cleaning. Element shall bereplaceable and be made of compressed wovenwire. Housing shall be constructed of lowcopper 356 HT cast aluminum. Element shallbe 316 stainless steel. Maximum workingpressure shall be 25 psig.

2. Flame check shall be manufactured by Varec.

(c) Pressure Relief and Flame Trap Assembly

1. Pressure relief and flame trap assembly shallhave ANSI 125 pound flat face flangedconnections. Valve shall be set to relieveat 18-inches W.C. pressure and 150 cfmcapacity for hide pile gas at 0.60 at 2-inchW.C. pressure increase above setting.

2. The pressure relief device shall be a singleport back pressure regulator. Regulatorvalve shall be controlled by a large, springloaded diaphragm. Regulator shall providetight shut-off. It shall maintain a backpressure within approximately 10 percent ofthe setting. The spring barrel shall includea glass enclosed pointer and scale toindicate setting. A spring adjusting screwshall permit setting adjustments withoutdisassembling the diaphragm housing. Settingrange shall be from 12-inches to 32-inchesW.C. pressure.


3. Construction shall be 356 HT low copper castaluminum body, diaphragm and spring housings,and diaphragm plate. Inner valve shallinclude low copper aluminum pallet with 304stainless steel stem and bushings. Diaphragmshall be molded Buna-N rubber with nylonreinforcement. Setting spring shall be zincplated steel. Adjusting screw shall be 304stainless steel.

4. Net free area through flame arrester bankassembly shall not be less than four (4)times the corresponding size standard pipe.Housing shall be off-set with a 1/2-inch NPTdrain connection at the low point. Entirebank assembly shall slide easily out of thearrester housing to facilitate inspection andcleaning. It shall not require support foralignment, and shall not place a strain onconnecting piping. Bank frame shall beextensible, and shall be filled withcorrugated rectangular shaped bank sheets.Sheets shall be arranged for individualremoval.

5. Flame arrester housing shall be constructedof 356 HT low copper cast aluminum. Bankassembly shall include a low copper aluminumframe with 316 stainless steel bank sheets.

6. Regulator and flame arrester shall befunctionally interconnected by a thermallyactuated by-pass valve. It shall be thespring actuated double-acting needle valvetype. By-pass valve shall operate within 15seconds when the fusible element reaches260 degrees F.

7. By-pass valve shall automatically close theregulator by applying full upstream gaspressure on the top side of the diaphragmhousing. It shall be designed so it does notshut off gas flow unless fusewell iscontacted by flame. Fusible element shall bereplaceable without disassembling the valve.By-pass valve assembly shall be constructedof aluminum and stainless steel with Buna-N"O" rings.

8. Regulator, flame arrester, and by-pass valveshall be factory assembled as a single unit.Assembly shall be leak proof to 5 psig.


9. Relief valve and flame arrester unit shall bemanufactured by Varec.

(d) Explosion Relief Valves

1. Pressure (explosion) relief valve shall havean ANSI 125 pound flat face flangedconnection. Pressure relief shall be set ata pressure and capacity as scheduled for gasat 0.60 specific gravity.

2. Pallet assembly shall be dead weight loaded.It shall incorporate a replaceable syntheticrubber seat insert. Valve shall includeremovable lead weights for adjusting settingfrom 4 to 12-inches W.C. in 1-inchincrements. Valve shall have an extendedneck between flange and seat ring. Seat ringshall be replaceable. A protective screenshall be provided at the pressure port,located external of the pallet.

3. Construction shall include 356 HT low copperaluminum valve body and seat ring. Palletassembly, hood, and guide posts shall be lowcopper aluminum. Seat insert shall beneoprene. Explosion relief valve shall bemanufactured by Varec.

2.02 Gas Control Equipment

(a) Pressure Regulators

1. Gas main pressure regulator shall haveductile iron body, aluminum trim, screwed NPTconnections, internal relief, 1/8-inch port,and 5-20 psig spring range. Pressureregulator shall be Fisher Type 627R-641 orapproved equal.

2. Gas pilot pressure regulator shall haveductile iron body, aluminum trim, screwed NPTconnections, internal relief, 3/32-inch port,and 5-20 psig spring range. Pressureregulator shall be Fisher Type 627R-351 orapproved equal.


PART 3 - EXECUTION

3.01 Installation

(a) Installation shall be workmanlike in all respects.

(b) Piping dope or tape shall be compatible with themedium flowing through the pipe and equipment.

(c) Testing of all safety equipment shall be conductedwith air at the design conditions.

END OF SECTION


SECTION 15920

GAS BUTTERFLY VALVES

PART 1 - GENERAL

1.01 Scope

(a) Work specified in this Section is subject to theprovisions of Division 1 and Section 15050.

(b) Furnish and install air butterfly valves of thesize, type, and characteristics described withinthe Contract Documents.

1.02 Related Requirements

Section 15483 - Waste Gas Combustion Flare System

1.03 References

(a) American Society for Testing and Materials (ASTM)Standards

1. ASTM C 581; Test for Chemical Resistance ofThermosetting Resins Used in Glass FiberReinforced Structures

2. ASTM C 582; Specifications for ReinforcedPlastic Laminates for Self SupportingStructures for Use in a Chemical Environment

3. ASTM D 638; Test for Tensile Properties ofPlastics

4. ASTM D 790; Test for Flexural Properties ofPlastics

5. ASTM D 2563; Recommended Practice forClassifying Visual Defects in Glass-Reinforced Plastic Laminate Parts

6. ASTM D 2583; Test for Indentation Hardnessof Rigid Plastics by Means of a BarcolImpressor

12/21/91


7. ASTM D 2584; Test for Ignition Loss of CuredReinforced Resins

(b) American National Standards Institute (ANSI)Standards

1. ANSI/ASME B16.5; Pipe Flanges and FlangedFittings

1.04 Submittals

Submit product data in accordance with the provisionsof Division 1 and Section 15051.

PART 2 - PRODUCTS

2.01 Air butterfly Valves (3. 4. 6. 8 and 10-inches)

(a) Provide plastic air butterfly valves suitable foruse in wet airstreams containing hydrogen sulfide(H2S), methane, and trace amounts volatileorganic compounds including of benzene, toluene,dichlorobenzene, chlorobenzene, and ethylbenzene.

(b) Provide valves with single piece bodies withflange hole characteristics meeting ANSI Class125/150 dimensions.

(c) Valve Construction

1. 30 percent glass reinforced polypropylenelens butterfly disc and shaft bearings

2. PVC body, end plug, and seal retainers

3. Viton liner, moisture seal, and draft O-rings

4. Type 416 stainless steel valve stem

5. Type 316 stainless steel retainer ring

(d) Valves shall be bubble tight construction.

(e) Valves shall be manufactured by HaywardIndustrial Products or George Fisher.


2.02 Manual Operators

(a) Provide corrosion resistant 304 stainless steeloperators by valve manufacturer.

(b) Provide lever operators for 3 and 4-inch valves.

(c) Provide gear operators for 6-inch valves.

2.03 Electric Operators

(a) Provide NEMA 4X electric operator by valvemanufacturer.

(b) Operator Construction

1. Manual override

2. Two limit switches

3. Open/closed feedback

4. Operator located outdoor shall have 120volt, single phase heater to controlcondensation.

(c) Provide valve with handwheel for manual stroke.

PART 3 - EXECUTION

3.01 Installation

(a) Install valves in accordance with manufacturersrecommendations.

(b) All valves and appurtenances shall be installedin the locations shown on the Drawings, true toalignment and properly supported. Any damage tothe above items shall be repaired to thesatisfaction of the Trust Representative beforethey are installed.

(c) Install valves between duct flanges with 316stainless steel bolts, nuts and washers.

(d) Support pipe at both sides of each valve in amanner that allows removal of valve formaintenance without temporary pipe support.

END OF SECTION


SECTION 15960

CONTROLS

PART 1 - GENERAL

1.01 Work Included

(a) The specifications and accompanying drawings areintended to cover the provisions of all labor, materialand equipment necessary for the complete Gas CollectionSystem for the Industri-Plex Site Remedial Trust inWoburn, Mass. Any reference to a specific manufactureris to establish a standard of quality. Substitution ofequipment of equal or better quality is acceptable. Itbecomes the contractors responsibility to coordinate,adjust, and install the new equipment in accordancewith the manufactures recommendations and workman likepractices which includes notification of and coordina-tion with the other trades on the project.

(b) Furnish and install elements for complete functioningsystems, services and equipment as later specifiedunder this DIVISION of the complete specificationsand/or as indicated on the drawings.

1.02 Submittals

(a) Submittals are required for the following:

1. Pressure sensor and controller2. Pressure regulators.3. Pneumatic valve actuator with positioner4. Nitrogen gas generator5. Compressor6. After Cooler

1.03 Codes and Regulations

(a) Comply with the latest editions of following works,including all supplements thereto and any otherauthority having jurisdiction within requirements ofthis specification.

12/21/91

15960-1

1. Local Codes.2. National Fire Protection Association NFPA3. O.S.H.A.4. BOCA Code.

(b) Whenever drawings or specifications require materials,workmanship, arrangement or construction of higherstandard or larger size than is required by codes andregulations - drawings and specifications shall takeprecedence.

(c) Should there be direct conflict between above-mentionedregulations and Drawings or Specifications, Contractorshall refer the matter to the Design Engineer.

PART 2 - PRODUCTS

2.01 Nitrogen Gas Generator

(a) The Nitrogen Gas Generator, supplied as a packaged unitas manufactured by Balston Model #75-75, shall becomplete with an oil and solids removal perfilter, a0.01 millimeter membrane final filter, automaticdrains, moisture indicator, a line pressure regulatoron the discharge line adjustable from 70 to 125 psioutlet with max input of 250 psi. A two year supply ofperfilter cartridges shall be furnished. The generatorshall be capable of supplying 99% pure nitrogen @ 100psig. Entire unit shall be heat traced and insulatedwith materials as specified in section 15250. Allenclosures shall be NEMA 4x.

2.02 Aftercooler

(a) The Aftercooler shall be fan powered-air cooler capableof providing a 5°F approach to ambient when suppliedwith 6.7 SCFM of compressed air at 250°F. Constructedof copper tubing, aluminum fins and rigid steelcompressed air connections enclosed in metallic graysteel cabinets with automatic drain. Unit shall beDayton Model #32739, 1/2 hp 110V, single phase,provided with line voltage thermostat and remote strapon sensor. Sensor shall be strapped onto discharge airline under insulation. All enclosures shall be NEMA4X.

15960-2

2.03 Compressor

(a) Compressor shall be oil-less type duplex simultaneousoperation as manufactured by ITT Pneumotive model #EP-2B-D120-50-200/60/3. Complete with 120 gal receiverand electrical control panel with magnetic starters,heaters, low voltage transformers, control circuit andautomatic tank drain. Unit shall be capable ofproviding 15.2 SCFM of compressed air at 100 psig. Allenclosures shall be NEMA 4x.

2.04 Raceways

(a) Rigid nonmetalic conduit ( Vinyl ester resin Fiberglassschedule 40 ) shall be used underground Class I.

(b) Do not install conduit which has been crushed ordeformed in any way.

(c) Cap or plug conduit ends as soon as possible afterinstallation and let remain so until just beforeinstallation of tubing.

2.05 Hangers. Supports. Etc.

(a) Use only special devices specifically designed andmanufactured for hanging and support of conduit asmanufactured by Appleton Electric Co., Steel City Elec-tric Co., Thomas & Betts Co., or F&S Mfg. Corp.,Unistruct, or approved equal.

2.06 Tubing

(a) Dynalon vinyl plastic tubing, non toxic, chemicalresistant, clear and inert, S.G. 1.2, tensile strength2000psi, temp, range -40 deg C to 212 deg F, industrialgrade.

2.07 Above Ground Piping

(a) All above ground piping for compressed air serviceshall be black steel schedule 40.

2.08 Pressure Regulator - 100 to 20 Ib

(a) Air set with drip well for filtering and reducingpressurized air. Supply air max 250 psi. Outletpressure adjustable from 0 to 25 psi. 1/4" NPTconnections, high efficiency filter element down to 5microns

15960-3

2 . 09 Air Operated Controllers

(a) Air operated controller - indicating - 2 to 100%proportional band. Cast aluminum case, gasketed fordust, vapors waterproof with external settingadjustment knob for adjustment of control index.

(b) 30" Vac. to 0" pressure monitoring range.

(c) Pressure activated sensor and tubing system shall befurnished in all stainless steel construction withheliarc welds. Reference pressure atmospheric,operating pressure - 4" W.C. Vacuum.

(d) Output range - 0 to 20 psi, Input air 20 psi.

(e) Reference of quality Trerice P87700T

2.10 Pneumatic Actuators

(a) For operation of butterfly valves. Air supply pressure80 psi, Double rack and pinion actuator with self-lubricating carbon filled teflon bearings. Air tospring failsafe to open. Corrosion resistant Rilsancoating inside and out. Actuator shaft series 303stainless steel. Pneumatic positioner for modulatingcontrol - 3 to 15 psi signal with 15 psi full closed, 3psi full open, actuator and positioner as manufacturedby Kinetrol, Dallas, Texas.

2.11 Nameplates

(a) Provide nameplates for all control equipment, engravedbrass or engraved lamacoid; riveted in place, inaccordance with Schedules. Nameplates shall be one inchhigh with 1/2" lettering of length of lettering plus1/2" each side.

PART 3 - EXECUTION

3.01 Preparation

(a) Before installation, all piping, valves, fittings, andother components for all nonflammable nitrogen gassystems shall be thoroughly cleaned of oil, grease, andother readily oxidizable materials as if for oxygenservice. After cleaning, particular care shall be exer-cised in the storage and handling of such material.Such material shall be temporarily capped or plugged toprevent recontamination before final assembly. Justprior to final assembly, such material shall be exam-ined internally for contamination and shall berecleaned if necessary.

15960-4

(b) Piping, valves, fittings, and other components preparedat the job site shall be cleaned by washing in a hotalkaline cleaner-water solution, such as sodium carbon-ate or trisodium phosphate. Scrubbing shall be employedwhere necessary to ensure complete cleaning. Afterwashing, the materials shall be thoroughly rinsed inclean, not water.

(c) All installations shall be in accordance with NFPA99,4-4.1.4

3.02 Installation - General

(a) Do not consider drawings as merely diagrammatic; makeno major divisions from indicated or herein describedmethod of installation except in cases where unforeseenobstructions are encountered.

(b) Examine and study all Structural and Mechanicaldrawings; particularly note wall construction andbecome thoroughly acquainted with conditions affectinginstallation of all conduits and other work.

3.03 Special Trustee Instruction

(a) Upon completion of installation, manufacturer for eachpiece of equipment shall provide complete set of shopdrawings, operated instructions, maintenance data,parts list, etc. for Trustee. Neatly secure thesewithin binder. Do not present loose sheets.

(b) Manufacturer's Representative shall present binders toTrust Representative: then check his equipment forwiring, rotation and proper operation, and demonstrateits operation, maintenance care and emergency proced-ures to Trust Representative.

(c) Manufacturer's Representative shall forward writtenaffidavit to Trust Representative, certifying thatinspections, and demonstrations called for, have beenmade.

3.04 Final Tests

(a) Prior to the turning over of work as complete unit,test all components installed under this contract forproper connections, leaks, and binding restrictions.Conduct tests with aid of suitable testing instruments,and in presence of Trust Representative.

END OF SECTION

15960-5

SECTION 16000

ELECTRICAL POWER AND SYSTEMS

PART 1 - GENERAL

1.01 Scope

(a) The electrical work commences with the point ofelectrical service where shown on the Drawings andincludes furnishing all material and labor for acomplete electrical installation.

(b) The requirements of Division 1 apply to all workhereunder. The General and Special Conditions area part of this Division of the Specifications andall provisions contained therein which affect thiswork are as binding as though incorporated herein.

1.02 Definitions

(a) Provide: Furnish, install, and connect.

(b) Product Data: Catalog cuts and descriptiveliterature.

(c) Shop Drawings: Factory prepared specific to theinstallation.

(d) Indicated: Shown on the Drawings.

(e) Noted: Indicated or specified elsewhere.

1.03 Material Not Furnished

(a) Unless otherwise noted, the following arefurnished and installed under other Divisions:

1. Motors

2. Motor starters (except motor control centers)

3. Electrical heat tracing

4. Pilot and control devices for the aboveequipment

12/21/91


Power wiring and equipment connections for theabove items are included in this Division. Alsoincluded in this Division is control wiring to theextent shown on the Electrical Drawings; othercontrol wiring is furnished under the applicableMechanical Division.

1.04 Local Conditions

Power will be supplied by the utility company overheaddistribution system. Verify and comply with all powercompany requirements for metering. Make necessaryarrangements with the power company for temporaryservice requirements. Have the power company reviewsubmittals on equipment containing utility meteringsections.


(a) Provide the complete electrical installation inaccordance with the 1990 National Electrical Code(NFPA 70) , Life Safety Code (NFPA 101) , and inaccordance with applicable local codes. Obtainall necessary permits and have all work inspectedby appropriate authorities.

(b) All products shall be designed, manufactured, andtested in accordance with industry standards.Where applicable, products shall be labeled orlisted by third party certification agencies.

(c) Industry Standards: Standards organizations andtheir abbreviations, as used herein, are asfollows. Applicable date for industry standardsis that in effect on the date of advertisement ofthe Project.

1. American National Standards Institute (ANSI)

2. American Society for Testing and Materials(ASTM)

3. Federal Specifications (FS)

4. Institute of Electrical and ElectronicsEngineers (IEEE)

5. Insulated Cable Engineers Association (ICEA)

6. National Electrical Manufacturers Association(NEMA)

7. National Fire Protection Association (NFPA)

16000-2 Jordan, Jonec & Goulding

8. Underwriters Laboratories, Inc. (UL)

1.06 Submittals

(a) Approval drawings consist of shop drawings,product data and other information as noted in theindividual equipment sections. Except as noted,submittal information is for approval andequipment may not be installed until submittalshave been returned with stamped approval.

(b) Information required "for reference" such asproduct samples, similar unit test reports andtime current curves is for the purpose ofdetermining the suitability of a product,selecting breaker settings, etc. This informationis to be submitted at the same time as approvaldata; however, this information will not bereturned and stamped approval is not requiredprior to installation.

(c) Except as noted, installation instructions are notrequired to be submitted. However, it is theContractor's responsibility to obtain installationinformation from the manufacturer for allequipment prior to installing the equipment.

1.07 Record Drawings

(a) Furnish record drawings in accordance with therequirements of Section 01720. Record drawingsconsist of submittal data as listed above,operation and maintenance data, and as-builtdrawings. Record drawings are to reflect thefinal installation, including any changes duringapproval, manufacturing tests, and installation.

(b) In addition to other required sets, furnish oneset of operation and maintenance data for allapparatus requiring service. This set is to bebound in hardback, 3-ring binder(s) and shallinclude:

1. Title page with project name; installingcontractor's name, address and telephonenumber; date of installation and warrantyperiod.

2. Index sheet.

3. Complete manufacturer's operation andmaintenance data with tabs (corresponding tothe index) separating each item or system.Include the name, address, and phone number


of the nearest sales and service organizationfor each item.

(c) As-Built Drawings: Furnish one set of printsmaintained at the job site at all times with allchanges during construction marked thereon.Include on the as-built drawings sufficientdimensions to permit location of undergroundconduits.

(d) Submit the results of any tests required in theindividual equipment sections.

1.08 Delivery. Storage and Handling

(a) Ship products to the job site in their originalpackaging. Receive and store products in asuitable manner to prevent damage ordeterioration. Keep equipment upright at alltimes.

(b) Investigate the spaces through which equipmentmust pass to reach its final destination.Coordinate with the manufacturer to arrangedelivery at the proper stage of construction andto provide shipping splits where necessary.

PART 2 - PRODUCTS

2.01 Materials

Provide only new products of the manufacturer's latestdesign.

2.02 Substitutions

Where the words "equal to" follow or precede the listedacceptable manufacturers, equal products of othermanufacturers are acceptable and request forsubstitution may be made during submittal stage.


PART 3 - EXECUTION

3.01 Installation

(a) The complete installation is to be accomplished byskilled electrical tradesmen, with certified orsuitably qualified individuals performing allspecial systems installation and testing. Allworkmanship shall be of the highest quality, sub-standard work will be rejected.

(b) Schedule the work and cooperate with all trades toavoid delays, interferences, and unnecessary work.If any conflicts occur necessitating departuresfrom the Drawings and Specifications, details ofdepartures and reasons therefore shall besubmitted immediately for the TrustRepresentative's consideration.

3.02 Certification and Tests

(a) Prior to request for final review, test allsystems and repair or replace all defective work.Submit, with request for final review, writtencertification that all electrical systems arecomplete and operational.

(b) At the time of final review of electrical work,demonstrate the operation of electrical systems.Furnish labor, apparatus and equipment forsystems' demonstration.

(c) After final review and acceptance, turn over tothe Trustee all keys for electrical equipmentlocks. Present to the Trustee or the Trustee'sdesignated representative, demonstrations and oralinstructions for proper operation and maintenanceof the electrical equipment and systems.

END OF SECTION


SECTION 16050

BASIC ELECTRICAL MATERIAL AND METHODS

PART 1 - GENERAL

1.01 Work Included

This Section includes basic materials and methodscommon to all Sections of Division 16.

1.02 Submittals

Submit product data.

PART 2 - PRODUCTS

2.01 Conduit

(a) Rigid Steel Conduit: ANSI C80.1; minimum size3/4-inch.

(b) Intermediate Metal Conduit (IMC): UL 1242;minimum size 3/4-inch.

(c) Flexible Metal Conduit: FS WW-C-566.

(d) Couplings, Fittings and Conduit Bodies: NEMA FB-1; threaded for rigid steel and IMC; squeeze typefor flexible metal conduits.

2.02 Conductors

(a) Building Wire: NEMA WC-5; Copper, 75/90 degree C;type THWN/THHN; minimum size #12 AWG.

(b) Control Wire: Same as Building Wire exceptminimum size #14 AWG.

2.03 Boxes

Cast Boxes: Galvanized with gasketed cover andthreaded hubs.

12/21/91

16050-1 Jordan, Jones, Ooulding

2.04 Wiring Devices

(a) Switches: FS W-S-896, 20 amp, 120-277 volt, ivoryhandle.

(b) Receptacles: NEMA WD-1; 5-15R; nylon face; ivory.Exceptions: Provide specific use receptacleswhere indicated. Provide 5-2OR receptacles forbranch circuits serving one device.

(c) Cover Plates: Galvanized steel, gasketed,weatherproof where indicated.

2. 05 Disconnect Switches

(a) Disconnect Switches: UL-98 and NEMA KS-l; 600volt; heavy duty; quick make, quick break type;horsepower and I2t rated. Provide lever typeoperating handle directly connected to the switchmechanism; rocker types are not acceptable.Include padlocking provisions and nameplateclearly indicating "ON" and "OFF" positions.Equip all switches with a ground lug and, whereneutral conductors are scheduled, provideinsulated neutral lugs.

(b) Fusible Switches: Equip with rejection clips forfuse types noted.

(c) Enclosure: Glass reinforced polyester meetingNEMA 12 requirements.

(d) Acceptable Manufacturers: Cutler-Hammer, GeneralElectric, Square D or Westinghouse.

2.06 Fuses

(a) Fuses: Current limiting, non-renewable type,rated 200,000 AIC, with rejection feature; Class Jfor ratings 600 amp and below and Class L forratings 601 amp and above.

(b) Acceptable Manufacturers: Bussmann, Chase-Shawmutor Littelfuse.

2.07 Supporting Devices

(a) Support Channel: Galvanized or painted steel.

(b) Hardware: Corrosion resistant.

16050-2 Jordan, Jones. Goulding

2.08 Electrical Identification

(a) Nameplates: Engraved three-layer laminatedplastic, black letters on white background.

(b) Wire and Cable Markers: Plastic, split sleeve ortubing type.

PART 3 - EXECUTION

3.01 Conduit

(a) Unless otherwise noted, use only rigid steel orIMC conduits.

(b) Provide flexible metal conduit for connections tomotors, transformers and other vibratingequipment.

(c) Use suitable equipment for all bends. Crushed ordeformed conduits may not be installed. Cutthreaded ends square and ream to remove burrs.Paint threads with zinc compound.

(d) Run exposed conduits parallel or perpendicular tobuilding surfaces. Route conduits in slabs belowtop reinforcing and above bottom reinforcing.Coordinate with other trades and avoid hot pipingwhen possible. Where unavoidable maintain 3inches clearance when crossing and 12-inchesclearance when paralleling hot pipes. Cap exposedconduit ends during construction.

(e) Conduits left empty for future use, telephonewiring, etc. shall have a 200 pound tensilestrength polyolefin line pulled through and tiedoff at each end.

(f) All connections are to be wrench tightened andelectrically continuous. No running threads arepermitted. Provide supports as required by NECand, otherwise, within 3 feet of each box,cabinet, or fitting and at least every 10 feet.Provide clamp backs for all raceways on exterioror damp surfaces to prevent the raceway frombearing directly on the damp surface.

3.02 Conductors and Connectors

(a) Use only stranded conductors. Exceptions: Solidconductors may be used for receptacle branchcircuit wiring, sizes #10 and #12 AWG only.


(b) Use 90 degree C insulated conductors for alllighting circuits. Use 75 degree C insulatedconductors elsewhere, unless Drawings noteotherwise.

(c) Do not pull conductors until the conduit system iscomplete. Swab conduits prior to pulling and usepulling compound for all pulls. Do not exceed themanufacturer's pulling tension.

(d) Avoid all unnecessary splices. Where unavoidable,make splices in outlet boxes or pull boxes.

(e) Identify all conductors throughout the electricalsystem. For control and signal circuit, usenumbered wire markers at all terminals. For powercircuits color code per NEC.

(f) Make connections to circuit breakers, disconnectswitches, panel mains, etc. with solderless lugs.Use mechanical connectors for stranded conductors.

3.03 Boxes

(a) Provide boxes as shown on the Drawings and asrequired for splices, taps, wire pulling andequipment connections. Support boxesindependently of conduit. Provide knockoutclosures for unused openings.

(b) Box locations shown on the Drawings areapproximate unless dimensioned. Coordinatemounting heights and locations of outlets mountedabove counters, benches, backsplashes and otherfurnishings. Locate outlet boxes to permithandicap access per ANSI A117.1. Wherereceptacles are indicated 18-inches above finishedfloor, dimension is to the bottom of the box. Atthe option of the Trust representative, any outletmay be relocated by up to 10 feet before it ispermanently installed, without incurringadditional cost. Install adjacent devices at thesame elevation in a common box with one faceplate. Install adjacent devices at differentelevations in one vertical line.

(c) Provide cast outlet boxes in exposed, exterior andwet locations.

(d) Field drill conduit holes in tap, junction andpull boxes so as to afford the maximum bendingradius for the conductors.

16050-4 Jordan, Jones, Ooulding

3.04 Wiring Devices

Secure devices to outlet boxes without depending ondevice plates to pull them tight. Install a bondingjumper between all devices and outlet boxes. Installreceptacles with ground pole down.

3.05 Disconnect Switches

(a) Provide switches with voltage, ampere, and numberof poles as indicated on the Drawings.

(b Switches are non-fused type, unless Drawings noteotherwise, or the switch is used as a disconnectfor an item of equipment with a maximum fuse sizedesignated on the nameplate. In such cases,provide fusible type with appropriate fuse. Iffusible switches protect conductors with anampacity less than the rating of the switch,provide a nameplate on the inside front cover ofthe switch designating the maximum allowablefusing.

(c) Install switches so they are rigidly supported andreadily accessible. Provide stainless steelmounting channel or phenolic spacers to givenominal 1/2-inch separation from concrete walls inwet or damp locations.

3.06 Fuses

Equip all fusible devices with fuses. Replace allblown fuses up to final acceptance of the Project. Atthe completion of the Project, turn over to the Trusteespare fuses for each type and size installed; six eachfor ratings 60 amps and below, and three each forratings above 60 amps.

3.07 Supporting Devices

(a) Fasten hangar rods, support stands, conduitclamps, etc. to building structure using e :pansionanchors or beam clamps.

(b) Do not fasten supports to piping, ductwork,mechanical equipment or conduit. Do not usepowder actuated fastening devices. Do not drillstructural steel members.

16050-5 Jordan, Jones, Goulding

3.08 Electrial Identification

Provide nameplates for all switchboards, panelboards,transformers, disconnect switches, individual motorstarters and other items of electrical distributionequipment. Engrave with the equipment identificationas indicated; and the voltage, current and interruptingrating. Attach nameplates with screws or rivets;adhesives are not acceptable.

END OF SECTION


SECTION 16461

DRY TYPE TRANSFORMERS

PART 1 - GENERAL

1.01 Work Included

Dry type two winding transformers.

1.02 Submittals

Submit product data. Include outline and supportpoint dimensions of enclosures and accessories, unitweight, voltage, kVA, and impedance ratings andcharacteristics, loss data, efficiency at 25, 50, 75and 100 percent rated load, sound level, tapconfigurations, insulation system type, and ratedtemperature rise.

1.03 Delivery. Storage and Handling

(a) Store in a warm, dry location with uniformtemperature. Cover ventilating openings to keepout dust.

(b) Handle transformers using only lifting eyes andbrackets provided for that purpose. Protectunits against entrance of rain, sleet, or snow ifhandled in inclement weather.

PART 2 - PRODUCTS


(a) General Electric

(b) Hevi-Duty

(c) I.T.E.

(d) Sorgel

(e) Westinghouse.

12/21/91


2.02 Dry Type Transformers

(a) Dry Type Transformers: NEMA ST-20; factory-assembled, air cooled dry type transformers;ratings as indicated, Transformers are twowinding power type. Three phase units areconnected delta primary and wye secondary. Scottor Tee connections and autotransformers are notacceptable.

(b) Insulation: 220 degrees C, 150 degree C rise forratings 30 kVA and larger; 185 degrees C, 115degree C rise for ratings below 30 kVA.

(c) Taps: Two, 5 percent below rated primary forratings 15 kVA and smaller; six, 2-1/2 percenttwo above and four below rated primary forratings larger than 15 kVA.

(d) Ground core and coil -vr.evbV- ts enclosure bymeans of a visible flexible copper groundingstrap.

(e) Mounting: Transformers 75 kVA and less shall besuitable for wall, floor, or trapeze mounting;transformers larger than 75 kVfc. haii be suitablefor floor or trapeze mounting.

(f) Isolate core and coil from enclosure usingvibration-absot bing i

PART 3 --EXECUTION

3.01 Installation

(a) Set transformer plumb and level.

(b) Use flexible conduit, two foot minimum length,for connections to t.j'aMsfo . ar case. Makeconduit connections to s.ici€ _i3'ie!. o/. enclosure.

3.02 Field Quality Control

(a) Check for damage and tight connections prior toenergizing transformer.

(b) Measure secondary voltage under normal loadconditions and make appropriate tap adjustments.

END OF SECTION


SECTION 16470

PANELBOARDS

PART 1 - GENERAL

1.01 Work Included

Panelboards.

1.02 Submittals

Submit shop drawings.

PART 2 - PRODUCTS


(a) General Electric

(b) Square D

(c) Westinghousa

2.02 Panelboardst '

(a) Panelboards: NEMA PB-1; UL 67.

(b) Rating: Voltage and ampere ratings are shown on theDrawings. Unless otherwise indicated interruptingratings (RMS symmetrical) are 14,000 amps for 480 voltpanelboards and 10,000 amps for 240 and 208 voltpanelboards.

(c) Boxes: Code gauge galvanized steel meeting NEMA 3Rrequirements; sized to accommodate devices indicatedand afford wire bending space in accordance with NECrequirements.

(d) Fronts: Surface or flush as indicated, door-in-doorconstruction, finished in light grey enamel over a rustinhibitor. Furnish flush lock for fronts less than 48-inches high and vault type handle with three pointcatch for fronts 48-inches and higher. Key all locksalike.

12-21-91


Bus: Copper, att&a&i$F*t3 f£ar bolt-on circuit breakers.Furnish int>v>tn*aip*Jae6*«:aiItnta- and ground bus with mainlug bonded ,,^C'i ^ '

( f ) Circuit ilcs&fciSiSlfcs* NSfflt ^*£J • molded case type,thermal idags^tio^'WU^ #&B&ti iiftSfertial cowmon trip onmaltipoln kreuaSslijffB^w<. i*o«ilSft?P4lreaXer fuVly rated forintfcrruyti'Hj ~ jyaîte^v^îj^jps^riijfi ratings are notaccept-sble. „ .qs 'v^*' -- 'âr-ias r.a.

i "V 'i -

(g) Provide encraved^'nameplaâai giving the voltage ratingp. and pane3 detfH&6pti&*tB afe-v ISSitlrced. Provide a UL' sjakyice cnt ajn<£«iS*lt«b»i. £®^ -agftiffboards used as service

3.01 JIU.-AMV-—«R^*.,TI v,A»— S(a t^By ar^ .rîdly supported and

,'% feet ^.^-inches

'x, er r ^ f - - . . - - * — e thfi

(b)4" pjrfasr^to enei?gtUiTig panBiaJjoards pjleajn^ out construction^ tb*r- trims or

,. fjctosst .h«3erl«U3Sv - a&^fS^êcW âs;4 to phase and. -~.^-i^l*>ta^;4tnsw«» that-BS^fflit^^^bi^mts, ^t ,-i .

^"\^ '• ',, rj-. ', :>r.ort circui-s exis(cj Awjust pastel bartrierfi a»"that no op'sningi; o-cur between

)W\d 1&ftff 'JjaTrRl fttinafe n°P^'Bvid^<?s|ê- plates andas jrm<|eae?iry;'tr6!4Btt4rsSSSKxaiad 5froHt integrity.

ralr. deaa(d) "ype ^l reset cry ca»fl» with circuit loads and/or area

f«- vv ' - •-i . ••3-°2 Field Quality Ccn --ol

Measure steady state load currents at each panelboardfe*<3«f- fittftuOA' ttfete" j*bfl6ftsrenca at any pamlboard between

pf»MA6ra30ea^te .^llBun 20 percent.P%>hafttftf i'dttF'^mlti-wire branch

~ " ~ *or n»u

END OF5 .-* S
