Mechanical Specifications

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER MECHANICAL SERVICES

Lulu hypermarket at western region 00 1 Date: 31st March 2015 Rev. 00

Plumbing

Division 22 Mechanical Services

Contents

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER MECHANICAL SERVICES


DIVISION 22 Plumbing Section 22 05 00 Plumbing Basic Materials And Methods

Section 22 05 16 Expansion Fittings And Loops For Plumbing Piping

Section 22 05 19 Meters And Gages For Plumbing Piping

Section 22 05 23 General- Duty Valves For Plumbing Piping

Section 22 05 48 Vibration And Seismic Controls For Plumbing Piping and Equipment

Section 22 05 53 Identification For Plumbing Piping And Equipment

Section 22 05 73 Facility Drainage Manholes, Catch Basins And Gully-Traps

Section 22 05 76 Facility Drainage Piping Cleanouts

Section 22 07 16 Plumbing Equipment Insulation

Section 22 07 19 Plumbing Piping Insulation

Section 22 10 00 Plumbing Piping and Pumps, Facility Water

Distribution, Facility Sanitary Sewage and Facility Storm Drainage

Section33 50 00 Natural Gas Installaitons

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER PLUMBING BASIC MATERIALS AND METHODS

Lulu hypermarket at western region 22 05 00 1 Date: 31st March 2015 Rev. 00

SECTION 22 05 00- PLUMBING BASIC MATERIALS AND METHODS PART 1 GENERAL 1.01 General Requirements 1.02 Scope of Work 1.03 Quality Assurance 1.04 Submittals 1.05 Protection of Pipe Materials 1.06 Identification PART 2 PRODUCTS 2.01 Piping Materials 2.02 Pipe Services 2.03 Fittings 2.04 Mechanical Couplings and Fittings. 2.05 Flanges 2.06 Unions 2.07 Valves General 2.08 Hangers and Riser Supports 2.09 Inserts and Supports 2.10 Sump Covers and Frames 2.11 Valve Tags and Charts 2.12 Nameplates 2.13 Sleeves 2.14 Thermometers 2.15 Gauges 2.16 Flow Meters 2.17 Wiring and Electric Motors and Motor Starters PART 3 EXECUTION 3.01 Installation 3.02 Pump and Equipment Connections 3.03 Drains 3.04 Pipe Installation 3.05 Piping system Joints 3.06 Control Components 3.07 Dirt Accumulation Under Control Valves 3.08 Hangers 3.09 Anchors 3.10 Air vents 3.11 Expansion Joints 3.12 Installation of Temperature Gauges 3.13 Installation of Pressure Gauges 3.14 Installation of Flow Measuring Gauges 3.15 Protection 3.16 Rigging of Equipment 3.17 Concrete 3.18 Metals 3.19 Cutting and Patching 3.20 Identification of Equipment and Piping 3.21 Flashing 3.22 Inserts, Sleeves and Escutcheons 3.23 Access Doors 3.24 Excavation and Backfill 3.25 Painting



3.26 Pipe System Cleaning 3.27 Pipe Systems Test PART 1 GENERAL 1.01 GENERAL REQUIREMENTS A. The work of this Division shall be governed by the following documents: 1. Conditions of Contract. 2. Instructions to Tenderers. 3. Form of Agreement. 4. General and Special Conditions of Contract. 5. Form of Tender. 6. Appendices. 7. Applicable Divisions. B. Comply with requirements of Divisions 21, 22, 23 and 25. C. It is the Contractors responsibility to be fully aware of and comply with all of the

requirements of the above listed documents. 1.02 SCOPE OF WORK A. This section is a Plumbing Basic Materials and Methods section and is to be read as a part

of any other section of the specification making reference to pipe, tube and fittings, hangers and supports, and electrical equipment.

B. Provide all necessary materials, labour, equipment, tools, appliances, services, hoisting,

scaffolding, supports and supervision to provide complete piped services to all plumbing systems, installed in accordance with the Divisions 21, 22, 23 and 25 of the specifications.

C. Types of pipe, tube and fittings specified in this section include the following: 1. Piping Materials a. Steel Pipe. b. Copper Tube. c. Polyvinyl Chloride (PVC). d. Acrylonitrile Butadiene Styrene (ABS). e. High Density Polyethylene (HDPE). 2. Pipe/Tube Fittings a. Fittings for Steel pipe. b. Fittings for Copper Tube.



c. Fittings for Polyvinyl Chloride (PVC). d. Fittings for Acrylonitrile Butadiene Styrene (ABS). e. Fittings for High Density Polyethylene (HDPE). C. Miscellaneous Piping Materials/Products. 1.03 QUALITY ASSURANCE A. Acceptable Manufacturers 1. Subject to compliance with the requirements of the Contract Documents, acceptable

manufacturers are to be firms regularly engaged in the manufacture of pipe, tube and fittings and valves, of types and sizes required, whose products have been in satisfactory use under similar service conditions for not less than ten years.

B. Regulatory Requirements 1. Welding a. Certify welding procedures, welders and operators for shop and project site welding

of piping work in accordance with Lloyds Standard Class 2, ANSI B31.1 using procedures stated under Part 3 Execution section of the specification.

b. Certify welding of pipework using the Standard Procedure Specifications by and

welders tested under supervision of, Lloyds of London UK or the National Certified pipe Welding Bureau (NCPWB) or in accordance with procedures stated under Part 3 Execution section of the specification.

2. Brazing a. Certify brazing procedures, braziers and operators in accordance with BS 1723 and

BS 1724 or ANSI B31.5 paragraph 527.5 for shop project site brazing of pipework. b. Welders not certified, or welders failing tests will not be permitted to work on this

project. Any work performed by non-authorized welders will be rejected and work replaced by welders holding valid test certificate at Contractors expense. Submit qualification certificates for the Engineers review and record.

1.04 SUBMITTALS A. Refer to applicable Division of the Specifications for instructions. B. Submission with Tender Document. C. Shop Drawings and Material Submittals 1. Submit Material Submittals and indicate accordingly on shop drawings for the following: - a. Plumbing Valves (all types). b. Strainers. c. Expansion Joints and Compensators. d. Thermometers and Gauges. e. Motor starters provided by this Contractor. f. Sump Covers.



g. Identification Materials. D. Recommended Spare Parts List. E. Samples 1. Submit samples of identification materials together with schedule of application. F. Pipe Schedule 1. Submit piping schedule showing manufacturer, pipe or tube weight, wall thickness, fitting

type and joint type for each piping system G. Welding Certification 1. Submit welders certification for all welders proposed for pipework/support welding on

the project. Submit reports for the welding of the piping works as required by the Engineer.

H. Brazing Certification 1. Submit welders certification for all welders proposed for pipework/support welding on

the project. Submit reports for the welding of the piping works as required by the Engineer.

1.05 PROTECTION OF THE PIPE MATERIALS A. Provide factory applied plastic and caps on each length of pipe and tube. Maintain end

caps through shipping, delivery, storage, and placing in position to prevent pipe end damage and to eliminate the ingress of dirt and moisture.

B. Store pipe and tube indoors on purpose made racks, to protect from weather. Where

it is necessary to store outdoors provide purpose made racks to elevate pipe and tube above grade and enclose the whole with durable weatherproof covering.

C. Protect flanges and fittings from damage by dirt and moisture by inside storage or by

packaging in durable waterproof wrapping. 1.06 IDENTIFICATION A. All pipe work insulated and un-insulated in mechanical plant areas, service voids, service

ducts, false ceilings and exposed in corridors and on roofs shall be provided with colour coded bands and names at 5m intervals, change of direction or physical space to indicate the service, together with directional arrows to indicate direction of flow. The identification shall be provided in accordance with the requirements specified in section 22 05 53.

B. Identification colour coded bands and nomenclatures shall be in accordance with BS1710

or other approved International Pipework Colour Coding and Identification Standard and may take the form of self adhesive plastic tapes.

C. Identification nomenclature shall be in both English and Arabic languages. D. Identification to be applied after completion of painting and/or insulation of equipment

and pipework. PART 2 PRODUCTS



2.01 PIPING MATERIALS A. General 1. Provide pipe and tube of type, joint type, grade, size and weight (wall thickness, SDR or

class) indicated for each service. Where type, grade or class is not indicated, request proper selection from the Engineer.

B. Steel, Black and hot dipped galvanized. 1. Material specifications to be one of the following as chosen under pipe Services: a. Continuous butt-welded ASTM A120 or BS.3601 BW22. b. Continuous furnace butt welded ASTM A53 or BS.3601 BW22. c. Seamless: ASTM A53 Grade A and B, or BS.3601 HFS22 or HFS27. d. Electric resistance welded: ASTM A53 Grade A and B, or BS.3601 ERW22 or

ERW27. e. Seamless: ASTM A106 Grade A and B, or BS.3602 HFS23 and HFS27. C. Copper tubing 1. Material specifications to be Hard Drawn ASTM B.88 Type M, or BS2871, Table X. D. Stainless Steel 1. Stainless Steel Cr-Ni-MO to DIN 1008, BS 316S33. E. Red brass 1. ASTM B43, seamless, annealed, 85 percent copper IPS. F. Polyvinyl Chloride (PVC) 1. Class 150 to AWWA C900 or BS 3506. 2. Maximum allowable working pressure: 1034 kPa (150 psi) at 230oC (73oF). 3. Ratio of outside diameter divided by wall thickness to be 18 (SDR 18). G. PVC Sewer Pipe 1. External to BS 3505. 2. Ratio of outside diameter divided by wall thickness to be 28 (SDR 28) H. Acrylonitrile Butadiene Styrene (ABS) 1. Class C to BS.5391 Part a. 2. Maximum continuous pressure rating: 896 kPa (130 psig) at 20oC (68oF) 2.02 PIPE SERVICES



A. Pipe Application Schedule: Following pipe applies to systems specified except as noted. 1. Reservoir Make-up Water (City Water) and Site Wide Water Distribution Network: a. Water Supply, Buried Pipes

Pipes and fittings for conveying water in external water distribution network shall be royal blue high performance polyethylene pipes HPPE (PE100) for below ground (buried) use and suitable for potable water, rated to 16 bar (unless otherwise indicated on drawings) and manufactured in accordance with the requirements of BS 6572 or ISO 4427.

The pipe material should have excellent chemical and physical properties, resistant to external and internal corrosion from ions in water and chemicals on the building site.

The material shall be secure joint technology, which requires no additional materials. All molded fittings should be manufactured from the same material as the pipes. The pipes shall be joined using electro-fusing fittings for pipe sizes 110mm to 160 mm and butt welding joints for pipe sizes less than 110 mm.

b. Above grade suspended. 1) UPVC to BS3505 Class E for solvent weld joint. 2. Cold and Hot Water Pipe Work- (Inside Buildings) a. Cold Pipework Risers: 1) Polypropylene PPR according to DIN 8077 and DIN 8078 Standards, but not less

than PN 20.The pressure shall be verified and equal 1.5 times of the riser pressure requirements.

b. Cold and Hot Water Pipework Distribution: 1) Polypropylene PPR according to DIN 8077 and DIN 8078 Standards ,

but not less than PN20. 3. Sanitary Vents (Plumbing): a. External drainage: UPVC Class E to BS3505. b. Internal drainage: HDPE to DIN 19535 with but weld (electro fusion weld shall be used wherever but weld is not possible). 4. Sanitary Drains (Suspended, buried and concrete encased): a. External drainage: UPVC Class E to BS3505. b. Internal drainage: HDPE to DIN 19535 with but weld (electro weld shall be used wherever but weld is not possible). c. Buried in foundation drainage: HDPE to DIN 19535 (fittings shall be electro fusion

weld and but weld fittings are not permitted). 5. Storm Drains & Miscellaneous Drains and Overflow:



a. External storm drainage: UPVC Class E to BS3505. b. Internal storm drainage: HDPE to DIN 19535 with but weld (electro weld shall be

used wherever but weld is not possible). c. Buried in foundation storm drainage: HDPE to DIN 19535 with electro weld shall be

used and but weld is not permitted). 6. Irrigation Water: a. PVC Schedule 80 for solvent weld joint. 7. Water Feature and Fountain: a. UPVC Class E to BS3505. 2.03 FITTINGS A. General 1. Provide factory-fabricated fittings of type, materials, grades, class and pressure ratings

indicated for each service and pipe size. Provide sizes and types matching pipe, tube, valves or equipment connection in each case.

2. For Stainless Steel Pipe: Stainless Steel press-fittings Cr- Ni-MO steel BS 316 S 33 BS 320 S31. 3. For Steel pipe: a. To 50mm (2): 1) Steel: Socket weld ends, ANSI B16.11 or BS1965. 2) Steel: Screwed, ANSI B16.4, or BS1740. 3) Malleable irons: ANSI B16.3, or BS143 and 1256, threaded. a) 150 lb wsp. b) 300 lb wsp, where noted. b. 65mm (2 1/2) and larger welded: 1) Butt welded, same weight as piping. 2) ANSI B16.9 or BS1965. 3) ANSI B16.28 or BS1965 for short radius elbows rated to connecting pipe. c. Branch connections: 1) Equal to main and to 2 pipes sized smaller: weld tees. 2) Three or more pipe size smaller than main, but 65mm (2 1/2) and larger: Bonney

weld-o-lets.



3) To 65mm (2 1/2): Bonney Weld-o-lets, Thread-o-lets, threaded Nip-o-lets, or steel couplings.

2.04 MECHANICAL COUPLINGS AND FITTINGS A. General 1. Mechanical couplings: a. Malleable iron, Grade II for following working pressures: Up to 150mm (6) IPS-6900 kPa (1000 psi) 200 to 300mm (8 to 12) IPS- 5520 kPa (800 psi). b. Grooved type or steel shoulder ends. c. Gaskets: Synthetic rubber ASTM D-735, Grade R 615 BZ. 2. Bolts: Oval neck track type, ASTM A183: a. Mechanical Couplings to be similar to Victaulic Style 77. 3. Grooved End Fittings: a. Grooved type, ductile iron as specified or equal British Standard for couplings to

250mm (10), steel ASTM A536, rated 2070 kPa (300 psi) working pressure. b. Companion pipe grooving: As per coupling and fitting manufacturers

recommendations. 4. For copper tubing: a. End feed capillary copper fitting to BS864 Part II of ASTM equivalent suitable for

solder joints and brazing. b. Solder Joint: .1 Solder 95-5 ASTM B.32 or equivalent British Standard. c. Silver brazing alloy, similar to Handy and Harman Sil-Fos. 5. For UPVC (Gravity Sewer) a. Solvent weld to ASTM F439 or BS4346 b. Bell and spigot with rubber gaskets. 6. For UPVC (City Water) a. Solvent weld to ASTM F439 or BS4346. b. Threaded connections to ASTM F437. c. PVC pressure fittings to suit the pressure. d. 150 lb van stone flanges.



e. Solvent weld using cleanse purple primer and industrial grade cement. 7. For ABS (Sanitary Drainage) a. Class C solvent weld to BS.5392 Part 1. b. Gaskets and 0 rings on sockets to be of EPDM. c. Flanges to BS4504. 8. Dielectric Couplings a. To join pipes of dissimilar materials. b. Use insulating coupling. c. Dielectric coupling to be similar to Victaulic Style 47 when connecting dissimilar

metals in liquid systems. 2.05 FLANGES A. For steel pipe: of matching quality, grade and thickness. 1. Welded: Welding neck, slip-on, socket welded, ANSI B16.5. or BS10 slip-on flanges:

Back welded. a. 150 lb wsp. b. 300 lb wsp. c. 300 lb ring groove for high pressure service. 2. Screwed: a. Standard cast iron: ANSI B16.1 or BS10. b. Extra heavy cast iron: ANSI B16.1 c. Match Connecting flange 1) For Class 2) For Facing B. For CPVC Pipe: 1. CPVC schedule to suit system pressure. C. Flange gaskets: 1. One-piece ring type 1.6mm (1/16) thick. 2. Suitable for temperature, pressure and service of system. D. Bolts and nuts: 1. Bolts:



a. Chrome-molybdenum bolt stud, ASTM A193 Grade B7. b. Threaded full length, threads ASA B1.1. c. Length sufficient to project beyond nuts one complete thread when joint is made up. 2. Nuts: a. Carbon steel, ASTM A194 Grade 2. b. Hexagon. c. Heavy series. d. Threads same as for bolts. E. For Joints of dissimilar metals: 1. Isolating gaskets, sleeves and washers between flanges, bolts and nuts. 2. Gaskets, similar to dupoint Teflon. 2.06 UNIONS A. For steel pipe: 1. Malleable iron 300 lb wsp. a. Ground jacket seat: Brass-to-iron, black or galvanized to match piping. b. A.A.R. malleable iron 300 lb wsp. c. Forged steel, 2000, 3000 lb wsp class, bronze-to-steel or steel-to-steel seats, where

noted or required for service. B. For PVC pipe: 1. Use material schedule to match schedule of pipe and suit the system pressure. 2.07 VALVES GENERAL A. In addition to valves, cocks and strainers etc., shown on drawings, the Contractor shall

include for the installation of sufficient valves, cocks and strainers at appropriate locations to enable the system to operate to the satisfaction of the Consultant.

No asbestos containing materials shall be employed in any valve.

Valves shall bear the BSI Kitemark or equivalent denoting Quality System, accreditation and compliance with British Standards and where no Kitemark scheme exists, valves shall be manufactured under an approved BS5750 Quality System. All valves should be from one source (one manufacturer).

Generally, all valves of the same type shall be of the same manufacturer. All gate, globe, angle, swing check and butterfly valves as a group shall be of the same manufacturer.

All castings shall be clean close grained metal free from rough projections. Unless otherwise specified valves of 50mm nominal bore and under shall have female ends screwed to BS 21 and valves 65mm nominal bore and over shall have flanged ends.



Special care must be exercised in the installation of screwed valves to avoid straining their bodies, and preventing the gate or seat from closing tight. The wrench shall always be applied to the side being attached to the pipe. When attaching pipe to a valve already in place, a second wrench shall be used to hold the valve while the pipe is being tightened. A pipe shall not be screwed so far into a valve as to damage the seat.

Flanged valves shall have matching flanges manufactured in accordance with BS4504. Composite flanges to BS4504 should be used when butterfly or other 'inside bolt circle' valves are installed in copper pipe work systems.

All valves which contain copper alloy shall be gunmetal or capable of withstanding dezincification.

All valves on potable water services shall be approved by the Local water authority and WRc.

In lieu of gate valves, butterfly valves can be used for size 65mm and above. Valves for plumbing services are specified in the Section 22 05 23. 2.08 HANGERS AND RISER SUPPORTS A. General 1. Support, anchor and guide all piping to preclude failure or deformation. Construct and

install hangers, supports, anchors, guides and accessories to the approval of the Engineer. Do not use wire, tape of metal bands. Supports shall be designed to support weight of pipe, weight of fluid and weight of pipe insulation.

2. Fasten piping securely to the structure without overstressing any portion of the structure

itself. Secures pipe supports, anchors and guides to concrete by means of inserts of it greater load carrying capacity is required by means of steel fishplate embedded in the concrete.

3. Arrange hanger to prevent transmission of vibration from piping to building and supports,

submit proposal for the approval of the Engineer. 4. Furnish pipe hangers and supports complete with rods, bolts, lock, nuts, swivels,

couplings, brackets and all other components and accessories, to allow installation to freely expand and contract.

5. Hangers spacing: Piping in a plumbing system shall be installed without undue strains

and stresses and provision shall be made for expansion, contraction, structural settlement and water hammers.

6. Supports, clamps and hangers shall be made of galvanized steel. Cutting and pinning of

fixings will not be permitted. B. Provide adjustable Clevis type equal to Grinnell Fig. 65 for pipe sizes up to and

including 65mm (2 1/2). For pipe sizes 75mm (3) and over, provide adjustable Clevis type equal to Grinnell Fig. 260. Use rod sizes as recommended by the manufacturer.

C. On copper piping, provide copper plated type hanger or separate piping from hanger with

an approved insulating tape or plastic coating. D. Provide oversized hangers to pass over insulation on all insulated piping. Refer to the

Contract Documents.



E. Riser supports: Provide anchors and supports, complete with spring isolators where

shown, or indicated on the riser diagrams. Refer to the Contract Documents for anchor and support requirements.

F. The Contractor shall provide full details the proposed supports, anchors, guides and

hangers and the shop drawing and submit the same for approval. G. The Contractor shall submit all relevant calculation for the design of the proposed

supports, anchors, guides and hangers. 2.09 INSERTS AND SUPPORTS A. Inserts: 1. Provide inserts to the General Contractor for setting in concrete. Inserts for casting into

concrete shall be in accordance with Section 03 30 00 of Specification. 2. Provide necessary equipment, duct and pipe supports. 3. Provide cutting and patching required to install support attachments. 4. Single rod: Equal to Grinnell Fig. 281. 5. Multi-rod: Equal to Grinnell Limited Power Strut Model No. PS449 and PS349 with end

caps and closure strips. 6. Clip form nails flush with inserts. 7. Maximum load 75 percent of rating. B. Supports from building construction: Inserts, beam clamps, steel fishplates (in concrete

fill only), cantilever brackets or other means. Submit for review. C. Grouped lines and services: Trapeze hangers of bolted angles or channels. D. In mechanical equipment rooms: Install inserts in two way grid pattern, minimum 1.2m

(4ft.) on centres. E. Fasteners: 1. Expansion cases and concrete fasteners: Equal to Carpenter and Paterson STAR

SLUGIN SERIES 6800-1. 2. Drill concrete to receive required expansion cases of concrete fasteners. 3. Install in shear only, not in tension. 4. Fasteners to be Underwriters Laboratories, Factory Mutual, or equal British Regulatory

Body. 2.10 SUMP COVERS AND FRAMES Heavy duty cast iron cover and frame as approved by the Engineer. 2.11 VALVE TAGS AND CHARTS A. Tags



1. Minimum 38mm (1 1/2) dia. 2. 3mm brass with stamped numbers and letters filled in with black paint. 3. Identifying number and system letter, as approved. 4. Fastened by brass chain. 5. Use different patterns for plumbing, sprinkler, chilled water, fountain water, fuel oil, and

irrigation. 6. Provide on: All valves and controls. B. Charts: 1. Submit a valve tag chart for domestic water, fuel oil, chilled water, and fire water

indicating the following data for each valve: a. Valve number. b. System. c. Type . d. Size e. Location. 2. Mount charts on walnut grained wood plague with clear plastic laminations covering

diagrams. Wood plague with gold paint bevelled edge. Permanently fastened in each Mechanical equipment room, using 4 brass screws.

2.12 NAMEPLATES A. Engraved black lamicoid sheet with white lettering in both Arabic and English languages. B. Inscriptions to indicate equipment nomenclature such as pump P1, Chiller No. 1 etc. C. Provide for: 1. Gauges. 2. Meters. 3. Instruments. 4. Pilot lamps. 5. Control devices. 6. Motor controllers. 7. Equipment mounted on panels. 8. Transmitters. 9. All equipment including but not limited to calorifiers, pumps, pressure vessels etc. 2.13 SLEEVES A. Piping: Machine cut schedule 40 (medium wall) steel pipe or medium cast iron. 2.14 THERMOMETERS A. Thermometers: 1. Case: 225 mm (9) die cast aluminium with metallic blue black finish with adjustable

angle.



2. Window: Clear acrylic plastic and double strength glass held in place with removable stainless steel cap.

3. Tube: Lens front red appearing mercury tubing. 4. Scale: White background with jet black embossed figures and markings. Range -5 to

50oC with 1oC scale increment between 0 oC to 15oC. 5. Stem: Aluminum with socket connections. Stem length to suite application. 6. Bulb Chamber: Bulb chamber tapered to fit matched taper in the sockets. 7. Model: Trerice BX91 for water. Trerice BX99 for air. Or equivalent. B. Separable Sockets: 1. Material: Brass 2. Socket Length: To suit application for duct and pipe installations. Contractor to select

gauge with correct socket length for each particular location and application. 3. Manufacturer: Same as the proposed thermometer. 2.15 GAUGES A. Pressure Gauges 1. Case: 110mm (4 1/2) size black fibreglass reinforced polypropylene. 2. Liquid Fill: Glycerin. 3. Dial: White background with jet black embossed figures and graduations. 4. Pointer: Micro adjustable red pointer for indication of set pressure limit. 5. Window: Acrylic plastic with O ring seal for weather proof service. 6. Movements: Brass with bronze bushings. 7. Bourdon Tube: Phosphor bronze. 8. Safety: Blow out back. 9. Diaphragm Seal: For temperature compensation. 10. Socket: Brass 50mm (1/2) N.P.T. 11. Ranges: 0 - 2000 kPa (0 - 300 psig). 0 - 700 kPa (0 - 100 psig). 0 - 350 kPa (0 - 50 psig). 12. Accuracy: 1/2% of range. 13. Model: Trerice No. 450 LFB or equivalent.



14. The Contractor shall select gauges with a suitable range and graduations for each location

and application in accordance with the pressure at the particular point of installation B. Magnetic wafer type level gauges for domestic water pumps accumulator. C. Gauge Accessories. 1. Pressure snubbers: Porous bronze coil and brass body. 2. Gauge cock: Brass, T handle, union connection, 1/4. 2.16 FLOW METERS A. Cast iron wafer type. B. Pressure rating 2070 kPa (300 psig). C. Complete with built-in check valves and gasketed caps. D. Similar to Bell and Gossett Type A. 2.17 WIRING AND ELECTRIC MOTORS AND MOTOR STARTERS A. Electric power wiring for equipment provided by mechanical trades is specified in

Division 26. Electrically operated equipment to be: I.E.E. or equivalently approved and bear approval label.

B. Provide motor and systems control wiring between starter panels and control components

and meet all requirements stipulated for similar wiring and controls as specified in Division 26.

C. Provide wiring of items supplied by equipment manufacturers such as low water cut-offs,

anti vibration lock-outs, flow switches, thermostats, sump pump alternators, level controllers, water treatment equipment and control wiring between starters and control panels, etc.

D. All motors of equipment intended to operate under fire condition or installed in non-air

conditioned space shall be rated at 50oC (122oF) ambient temperatures.

All motors of equipment not intended to operate under fire condition and installed in air conditioned space shall be rated at 40oC (104oC) ambient temperature.

E. Unless otherwise specified, indicated on drawings or required by authorities having

jurisdiction all motors up to and including 3/4 HP: 230 Volt, single phase, 50 cycle with 1.15 S.F.; 1 HP and over: 400 Volt 3 phase, 50 cycle. All motors over 1/4HP to be TEFC. Single Phase Motors: Provide permanent split capacitor type with 1.15 service factor.

F. Variable speed motors of 1/2 HP and over: Provide thermistor over temperature

protection for each winding, wired in series, with leads terminated in the motor junction box. Provide for installation by Division 16, a motor tripping device, Westinghouse Type 3 UN7 or approved equal, c/w latching relay, pilot light & one auxiliary set of alarm contacts.

G. Provide motor starters, for motorized mechanical equipment, in general as per Division

26.



1. Unless otherwise noted, starters for 3 phase motors: combination, quick-make and quick-break disconnects with full voltage, non-reversing magnetic contactors for across-the-line service within the limits of starting currents specified in item 2. below.

Provide full protection of each phase by means of one overload relay per phase, reset button shall be in front of panel. Under-voltage protection: starter coil to disengage on 85 percent of rated voltage unless otherwise noted. Provide accessories as follows: TEST-OFF-ON switches, START-STOP pushbuttons, pilot lights, control transformers, auxiliary contacts etc., as indicated on the motor control schedule. Provide three phase ammeters with selector switch, voltmeters with selector switch, earth fault and phase failure protection.

2. The maximum starting currents of electric motors shall be as listed hereunder: Three Phase up to 3 HP five times F.L.C. 3 HP to 35 HP two times F.L.C. 35 HP and above 1.5 times F.L.C. Starting equipment to limit the current may consist of: Star-Delta Starters Resistance Starters Auto-Transformer Starters Other approved current limiting devices. 3. Motor control centres and equipment starters: Provide enclosure as specified in Section

26 24 19. Starters installed in control centre, as above, and complete with load wiring and control wiring terminal boards and all required provisions for electric line and load side power connections. Starter shall be of the drawer type, withdrawable in the OFF position.

4. Unless otherwise noted starters for single phase motors: 240 volt, thermal overload

protected manual starting switches with ON/OFF toggle switch, LED pilot light, earth leakage protection, three phase ammeters with selector switch and a surface or flush mounting IP54 enclosure to suit application. If automatic or remote operation is required provide magnetic starters as specified above for 3 phase motors, single phase motors to be with non-automatic circuit breakers.

5. Disconnects: Heavy duty IP54 (min.), front operated with handle suitable for padlocking

in the OFF position and arranged so enclosure cover cannot be opened while the handle is in the ON position. Operating mechanisms: quick-break positive acting with visible blades ad line terminal shield. Fusible units: complete with fuse clips and suitable for H.R.C. fuses unless otherwise noted. Equip each unit with solderless lugs and front cover nameplate identifying the catalogue number and electrical characteristics. Enclosures for disconnects mounted indoors: IP54. Enclosures for disconnects mounted outdoors: IP65. Ampere rating, number of poles and fuse requirements: as indicated in the contract documents. Provide a disconnect switch for every motor.

6. Fuses (unless otherwise indicated) English Electric Ltd., or approved equal, Form 1,

Class J H.R.C. for constant running equipment and Bussman Class J High Interrupting capacity time delay type for equipment that cycles ON and OFF.

7. All mechanical equipment having integral starters, and control panels shall incorporate, in

addition to the provisions of the Motor Control Centers and starters, earth leakage sensors, local audio/visual alarm, and output signals for BMS monitoring in accordance with Section 25 00 00.



8. All starters, control panels and Motor Control Centers shall be equipped with a door interlocked power disconnect per circuit and be factory assembled and tested.

9. All starters, control panels and motor control centers shall be provided with a lamp test

facility. PART 3 EXECUTION 3.01 INSTALLATION A. Install equipment, pipes, tubes and fittings in a workmanlike manner to present a neat

appearance and to function properly to the acceptance of the Engineer. Install ducts and pipes parallel and perpendicular to building planes. Install piping concealed in chases, behind furring, or above ceiling. Install exposed systems grouped to present a neat appearance to the approval of the Engineer. Comply with manufacturers installation instructions.

B. Install gauges and thermometers to permit easy observance. C. Install all equipment and apparatus regarding wiring, maintenance, adjustment or eventual

replacement with due allowance therefore. D. Install control devices to guarantee proper sensing. Shield elements from direct radiation

and avoid placing them behind obstructions. E. Include in the work all requirements of manufacturers shown on the shop drawings. F. Install all ceiling mounted components in accordance with the Architects reflected ceiling

drawings. Installation to be inspected and approved as acceptable by the Engineer. G. Leave space clear and install all work to accommodate future materials and/or equipment

as indicated and to accommodate equipment and/or materials supplied by other trades. Verify spaces in which work is to be installed. Install pipe runs etc., to maintain maximum headroom and clearances and to conserve space in shaft and ceiling spaces.

H. Confirm on the site the exact location of outlets and fixtures. Confirm location of outlets

for equipment supplied by other trades. I. Seal all protrusions through fire rated enclosures to maintain the integrity of the fire

enclosure. 3.02 PUMP AND EQUIPMENT CONNECTIONS A. Install piping connections to pumps and all other equipment without strain at the pipe

connection to this equipment. The Contractor shall request the Engineer to inspect pipe installation prior to connection being made. The Contractor shall remove where requested by the Engineer, the bolts in flanged connections or disconnect piping after the installation is complete to demonstrate that the piping has been so connected.

3.03 DRAINS A. Pipe all discharge from relief valves, equipment and condensate drains, strainers and

chemical pot feeders to the nearest floor drain or suitable receptacle. B. Provide 20mm (3/4) ball valves with hose ends, caps and chains at strainers, all low

points, at pumps, coils and at each piece of equipment.



C. Provide deep seal traps (150mm trap seal) on all air handling equipment condensate drains and floor drains.

D. Contractor shall provide and install temporary cover plates over all floor drains and roof

drains to prevent accumulation or disposal of debris during construction All cover plates to be removed at time of acceptance by the Engineer.

3.04 PIPE INSTALLATION A. Install all piping in the best workmanlike manner in accordance with the best practices of

the trade. Tundishes to be provided on all drains that collect drainpipes from equipment, drain lines etc.

B. The piping shown on the drawings is diagrammatic for clearness in indicating the general

run and connections and may or may not be, in all instances, shown in its true position. Take responsibility for the proper erection of systems of piping in every respect suitable for the work intended and as described in the specifications.

C. Keep plugged or capped all openings in pipe or fitting during installation. D. Install piping to avoid any interference with the installation or removal of equipment,

other piping, ducts etc. E. Place all valves and specialties to permit easy operation and access, and regulate and

adjust all packing glands on completion of the work. F. Install systems so that they can be thoroughly drained and all air eliminated. Provide

drain cocks at all low points in the systems and air vents at all high points. Indicate accordingly on the shop drawings.

G. During welding or soldering procedures, provide a fire retardant cloth, mat or blanket to

protect the structure, and adequate fire protection equipment at all locations where work is being done. Close off shaft or confine areas with a fire retardant mat or cloth to prevent sparks or pieces of hot metal from falling down the shaft or area way.

H. Provide sufficient isolation valves in the installations to allow isolation of all floors, on

each riser, to each apartment or specific zones etc for the purposes of maintenance. Provide adequate drain cocks between isolation valves to drain the isolated part of the system for the purpose of maintenance. Indicate all isolation valves on the shop drawings.

I. Provide quick fill points for the purpose of quick fill of the water supply system or

sections of the systems on completion of maintenance. Quick fill points shall be provided in the plant rooms and top of water risers. The Contractor shall indicate the proposed quick fill points on the shop drawings.

J. Provide drain points to the water system for the purpose of drain of the system or sections

of the systems on completion of maintenance. Drain points shall be provided in the plant rooms, bottom of the water risers. The Contractor shall indicate the proposed drain points on the shop drawings.

K. Provide long turn pipe fittings having wall thickness no less than pipe wall thickness.

Provide line size tees, and where branch linens are more than two sizes smaller than the main, weld-o-lets may be used.

L. Where steel piping is required to be buried use pre-insulated pipes or apply two prime

coats of saturated hydrocarbon paste with inert filler and passivating agents as a primer and adhesive for wrapping with a petroleum impregnated nylon carrier tape to engineer



approval. Applications to be made after assembly and testing of pipe work. Paste and tape to be similar to that manufactured by Denso of Canada Ltd., 33 Commander Blvd., Agincourt (Toronto) Ontario, Canada. Tel : 416 291 7756.

M. Where it is necessary to offset piping to avoid obstructions, use 45 degree rather than 90

degree elbows. N. Provide suitable cleanouts on every other change in direction and slope all condensate

drip drains. 3.05 PIPING SYSTEM JOINTS A. Provide joints of the type indicated for each pipe work system. B. Pipe work shall be threaded in accordance with ANSI B21, threads shall be cut full and

clean using sharp dies.

Threaded ends shall be reamed to remove burrs and restore full inside diameter. Apply pipe jointing compound, or pipe joint tape PTFE or Teflon where recommended by pipe/fitting manufacturer, on male threads at each joint and tighten joint to leave not more than three threads exposed.

C. Jointing materials used to seal threaded pipe joints shall be non-toxic. D. The Contractor shall avoid the excessive use of jointing material and PTEE/Teflon shall

not be used above 65mm pipe diameter. E. Braze copper tube and fittings where indicated in accordance with ANSI B31. F. Silver brazing will be the jointing of two closely adjacent prepared surfaces with melting

brazing alloy drawn by capillary action over the complete surfaces to be jointed. The flame gas will be either oxy-acetylene, oxy-propane or oxy-butane.

G. Solder copper tube and fitting joints in accordance with recognized industry practice. Cut

tube ends square, ream to full inside diameter and clean both outside of tube end and inside of fitting. Apply suitable flux, as recommended by tube/fitting manufacturer, to joint areas of both tube and fittings. Insert tube full depth into fitting and apply molten solder in a manner which will draw solder by capillary action over the complete surfaces to be jointed. Excess solder and flux to be wiped from joint.

H. Weld pipe joints in accordance with ANSI-B31 or BS 2640 and as follows: 1. Metal arc welding to be fusion welding with the heat for welding provided by electric arc

or arcs and the melting of metal electrodes will provide the filler material. The electrodes to be coated rod suitable for use in the local environment.

2. Gas arc welding to be fusion welding with the heat for welding providing by burning a

gas with oxygen at a temperature to melt metal rods suitable for use in the local environment. The mixture of gases may be oxy-acetylene, oxy-propane or oxy-butane.

3. Welding of galvanized steel pipe to be implemented by first removing the galvanizing by

filling or grinding to reduce smoke generation during welding.

The Contractor to provide adequate ventilation and smoke exhaust to permit welder to work continuously. Weld pipe using basic hydrogen controlled electrode similar to:

Supercito 70166 as manufactured by Oberlikon Welding Limited



Unidare House, Hayes End Road Hayes, Middlesex, U.K. UB4 8EF Tel : 01 573 8371 - Tlx : 263193.

Contractor to perform welding operation in accordance with the electrode manufacturers recommended procedures. All welds to be painted with a zinc rich primer to seal the galvanizing.

4. The welding process as specified herein are applicable to all welding processes necessary

to the installation of the pipe work and associated steelwork gantries and supports for the Mechanical, Electrical and Plumbing and Drainage Services.

5. The Contractor shall be responsible for the quality of welding and brazing and shall

provide for the testing of the welders employed. Certificates of such proficiency test, together with stamped samples provided for Engineers review before welding work is commenced. The welders proficiency standard to be equal to Lloyds Standard Class 2, Certified by an authorized testing laboratory paid for by the Contractor.

6. Qualification tests will be made for butt and branch welds in pipes. One test piece per

welder will be required for the qualification of welding of pipes-exceeding 100mm nominal diameter.

7. In addition, test pieces will be required for each position of a pipe. These positions will

be horizontal and rotated while welding, horizontal and fixed while welding, vertical and fixed while welding, for each range of nominal diameters specified.

8. Each butt welded test piece to be subjected to two root bend tests and two nick-break tests

of the welding.

Each branch welded test piece will be subjected to two root bend tests and two fillet break tests of the welding.

Each test piece weld to be radio-graphically examined. 9. The Contractor shall assign an identification symbol to identify each welder and this will

be used to stamp the work done by that welder. 10. Internal collapsible copper faced mandrills may be used to assist butt welding. Permanent

backing rings to butt welds will not be permitted. 11. The Contractor will compile a set of safety instructions concerning welding procedures

for the welders and after review by the Engineer; these will be issued to the welding operatives and foremen.

12. The Contractor shall allow for two percent (2%) of all the welds to be radio-graphically

examined. Determination of piping sections to be tested will be designated by Engineer.

The timing of the radiographic examination of weld or welds designated to be so examined will be confirmed in writing by the Engineer during the installation and commissioning.

Radiographic examination of welds will be carried out by a specialist employed by the Contractor subject to review by the Engineer. The specialist so employed will be responsible for the proper indexing, interpretation and reporting of the results of the radiographic tests.



13. Any weld, whether radio-graphically tested or not which are considered by the Engineer to be faulty, either in whole or in part, or which have failed under hydraulic or other tests so designated by the Engineer, will be removed and replaced by the Contractor.

14. The faculty part of a weld may be removed by flame gouging, chipping or grinding.

Otherwise, the Engineer may instruct that the portion of the works containing the fault weld be cut out and replaced by the welding-in of a new section of pipe or member.

15. Electrodes will be tropicalized as required suitable for the type of weld. Pipe and

preparation for butt welding will be machine beveled. Oxygen cutting will be permitted. All oxide will be removed after cutting and the cut to be made smooth and true by filing or grinding.

16. The correct alignment and welding gap shall be carefully maintained throughout the

welding using mechanical jigs, or tack welding and/or welded-on bridging pieces. 17. Where tack welds are used in the joint, they will be to the same finishes and thicknesses

as the initial root run. All extremities of tack welds will be dressed to provide fusion with the initial root run of weld.

18. All scale, rust, paint and any other substance detrimental to the weld will be removed

from the tack weld before the initial root run fusion is commenced. 19. External weld reinforcement will not be less than 10% nor greater than 20% of the pipe

wall or material thickness and will be symmetrical above the centre line of the weld joint. 20. No hump or crater will be permitted in weld runs where welds have stopped and

recommenced. The penetration bead of the weld in pipe joints will not exceed 1.6mm penetration.

21. The deposited weld metal will be free from cracks, slag, cavities, undercutting and other

faults. The external appearance of all welds will be clean and regular, with all slag removed by hammer, chisel and/or wire brush.

22. Should any of the welders work ( as defined by the Engineer) be found to be faulty

during radiographic tests, then that welder shall be removed from site and all other welds undertaken by that welder shall be checked by radiographic means and replaced as necessary at the expense of the contractor.

23. The extra radiography involved shall not be part of the 2% inspection previously

stipulated. I. Flanged pipe joints shall be made using purpose made mild steel, cast iron, wrought iron

screwed or welded flanges, compatible with the pipe work material used. J. Steel flanges shall be raised face type except when bolted to flat faced cast iron flanges on

equipment, in which case they shall be flat faced. K. Bolting for services shall be hexagon head bolts and heavy hexagonal nuts. Nuts and

bolts shall be tightened beyond finger tightness with an indicating torque wrench to ensure equal tension on all bolts. Tighten bolts such that those 180 degrees apart or directly opposite are torqued up in sequence.

L. Gaskets for insertion between flanges shall be purpose made, full face diameter, of

approved non-toxic composition material not less than 3mm thick before compression. M. Caulking of any joints screwed, flanged, welded or otherwise will not be permitted.



N. Victaulic Joints: 1. Ensure that grooved pipes are in compliance with the current Victaulic specifications and

recommendations. 2. Ensure that the A dimension, i.e. the area from the pipe end to the front edge of the

groove is free from identations, scores, seams, projections or roll marks. 3. Use only lubricants which are non-toxic and non-injurious to the gasket material. 4. Upon completion of assembly, the bolt pads of each coupling must be fully drawn

together, except for HP-70 couplings in sizes to 100mm (4). 3.06 CONTROL COMPONENTS A. Mount all pipe line devices supplied by the specialist Building Management System Sub-

Contractor such as flow switches, valves, separable wells for temperature controllers and sensors.

3.07 DIRT ACCUMULATION UNDER CONTROL VALVES A. The Contractor shall verify at the end of 6 (six) months from start of operation that dirt

has not accumulated under the seats of automatic control valves. Such material collected under valve set shall be removed and if seat is damaged it shall be replaced by Contractor at no additional cost to the Employer.

3.08 HANGERS A. Hanger rods shall not be attached to beams without approval of the Engineer. Explosive

actuated tools are not permitted. B. The following table will determine the spacing between support points for all piping on

this installation. Nominal Copper Plastic Pipe Size Tubing Steel PVC mm in m ft m ft m ft 12 ( .5 ) 1.22 ( 4) 1.50 (5) .91 (3) 20 ( .75) 1.83 ( 6) 1.83 (6) .91 (3) 25 (1 ) 1.83 ( 6) 2.13 (7) .91 (3) 32 (1.25) 1.83 ( 6) 2.74 (9) 1.22 (4) 38 (1.5 ) 1.83 ( 6) 2.74 (10) 1.22 (4) 50 (2 ) 3.05 (10) 3.05 (10) 1.22 (4) 64 (2.5 ) 3.05 (10) 3.05 (11) 1.50 (5) 76 (3 ) 3.05 (10) 3.66 (12) 1.50 (5) 100 (4 ) 3.05 (10) 4.57 (15) 1.50 (5) 150 (6 ) 3.05 (10) 5.18 (17) 1.83 (6) 200 (8 ) 3.05 (10) 5.79 (19) 2.13 (7) 250 (10 ) 3.05 (10) 6.70 (22) 2.13 (7) 300 (12 ) 4.88 (16) 7.00 (23) 2.44 (8) 350 (14 ) 4.88 (16) 7.62 (25) 2.44 (8) 400 (16 ) 5.18 (17) 8.23 (27) 2.74 (9) 450 (18 ) 5.18 (17) 8.53 (28) 2.74 (9) C. Where services supported by hangers are vulnerable to vibration, hangers shall be of the

spring isolation type.



D. Equipment, piping, and ductwork shall be hung independently of each other and

independently of other trades equipment or fixtures. Furthermore, this Contractor shall ensure that other trades do not hang their systems from hangers provided under this Section, unless mutually agreed between trades and approved by the Engineer.

3.09 ANCHORS A. Anchors shall be supplied and installed as necessary to ensure pipe work expansion does

not cause any damage to the pipe work installation, adjacent services or the building fabric.

B. Anchors shall be sized to resist the maximum imposed stress. C. No anchor point shall be located within 600mm of any welded joint. D. The anchor support shall be rigidly fixed to the building structure. E. Details of proposed anchors and imposed loads, complete with supporting calculations

shall be provided for approval by the structural and mechanical engineers. F. On steel pipe work, the pipe shall be welded to anchors with heavy steel straps. G. On copper pipe work, the pipe shall be welded to anchors with heavy copper pipes. H. For plastic pipe work systems they shall be in accordance with the pipe manufacturers

recommendations. I. All pipe work subject to movement shall be guided. J. Cold draw on expansion joints shall not be applied until the anchors are rigid and trim. K. Provide full details of all anchors on the shop drawings and submit the same for approval. 3.10 AIR VENTS A. Provide air vents on water piping at all high points in the system and at each piece of

equipment and in locations where air may be trapped. Provide shut off cocks to automatic air vents.

B. Provide automatic air vents on piping mains except where a possibility from water

damage would occur, in which case, use manual vents. C. Provide manual air vents at each piece of equipment. 3.11 EXPANSION JOINTS A. Install expansion joints and compensatory where indicated on drawings and in accordance

with manufacturers instructions especially in regard to proper length, anchoring and guiding, pre-compression, removal of spacers and testing.

B. Install expansion joints on all pipe work passing over building expansion joints. 3.12 INSTALLATION OF TEMPERATURE GAUGES A. General



1. Install temperature gauges in vertical upright position, and tilted so as to be easily read by observer standing on floor.

B. Locations 1. Install in the following locations, and elsewhere as indicated on drawings: a. At inlet and outlet of each heat exchanger. b. At inlet and outlet of each water heater calorifier . C. Thermometer Wells

Install in piping tee where indicated, in vertical upright position. Fill well with oil or graphite, secure cap.

3.13 INSTALLATION OF PRESSURE GAUGES A. General 1. Install pressure gauges in piping tee with snubber and gauge cock, located on pipe at most

readable position. B. Locations 1. Install in the following locations, and elsewhere as indicated on drawings: a. At suction and discharge of each pump. b. At water service outlet. c. At the outlet of the domestic water booster set. d. Fountain system, irrigation system. C. Pressure Gauge Cocks Install gauge cocks in piping tee with snubber. Install U tube syphons for all gauges. 3.14 INSTALLATION OF FLOW MEASURING GAUGES

Install on piping with read-out valves in vertical upright position. Maintain minimum length of straight unrestricted piping equivalent to 3 pipe diameters upstream of valve.

3.15 PROTECTION A. Cover openings in equipment and cover equipment where damage may occur from

weather to finish. Cover temporary openings in ducts and pipes with polythene sheets, until final connection is made. Cover all items cast into concrete floors or walls such as floor drains, cleanouts, etc., prior to pour, with heavy plastic tape or duct tape. Cover and seal, with polythene sheeting, all equipment, coils and motors in place during to prevent entry of dust, paint and debris.

B. Damaged items of works due to lack of proper protection shall be replaced at the

discretion of the Engineer and at no additional cost to the Employer. 3.16 RIGGING OF EQUIPMENT



A. Provide all rigging, hoisting and handling of equipment as necessary in order to place each piece of equipment in its designated area within the building.

B. Direct this work by qualified people normally engaged in rigging, hoisting and handling

of equipment. 3.17 CONCRETE A. Except as specifically indicated on the mechanical drawings or where indicated on the

architectural or structural drawings as provided by other Division, provide all concrete work required for mechanical work (bases, curbs, anchors, etc.) as specified in this contract documents.

B. Provide in good time, all inserts, sump frames, anchors etc., required to be built into

forming for mechanical services. 3.18 METALS A. Steel construction such as pipe and duct hanger supports, vertical column supports

required solely for the work of mechanical trades and not shown on architectural or structural drawings to be provided by Division 21, 22 & 23 to the acceptance of the Engineer.

3.19 CUTTING AND PATCHING A. Inform other trades in time concerning required openings. In work already finished the

Contractor will perform all cutting and patching at the expense of Division 21, 22 & 23. Obtain the approval of the Engineer before doing any work.

3.20 IDENTIFICATION OF EQUIPMENT AND PIPING A. Identify all automatic control devices, pumps, fans etc., with plates fixed to equipment

using Pop rivets or sheet metal screws. B. Affix valve tags to all valves securely by brass chains. C. Identify the following piping as to service and direction of flow using stencils and black

lettering behind each access door, in each room and/or every 5m (16.4 ft.). a. Domestic hot and cold water. b. Sanitary drain. c. Storm drain. d. Vent. e. Water feature supply and return. f. Drainage piping. g. Rain water pipe work. h. Irrigation exposed piping. 3.21 FLASHING A. Flash all mechanical parts passing through or built into an outside wall, or a waterproof

floor. B. Provide copper flashing for sleeves passing through exterior walls or water proof floors. C. Provide counter flashing on stacks, ducts and pipes passing through roofs to fit over

flashing or curb.



3.22 INSERTS, SLEEVES AND ESCUTCHEONS A. Provide for setting by applicable Division all sleeves required for piping and access

openings in walls, floors and roofs, as indicated in Contract Documents. B. Place inserts only in portion of the main structure and not in any finishing material. C. Supply and locate all inserts, holes, anchor bolts and sleeves in advance of time when

walls, floors and roof are to be erected. D. Provide the following for pipe sleeves: 1. Through interior walls, exterior walls above grade, interior non waterproof floors:

Machine cut Schedule 40 steel pipe, or medium cast iron. 2. Through walls below grade, waterproof floors, floors in janitors closets, equipment

rooms, and kitchens: locally fabricated puddle flanges sleeves made of schedule 40 M.S. pipes galvanized after manufacture, sleeves to be extended 150mm (6) above the floor and cut flush with the underside.

F. Seal all sleeves as follows: 1. Through walls and floors: Stop insulation flush with all wall and floor surfaces and seal

space between duct or pipe and sleeve with ram packed U.L. or other regulatory body approved and listed fire stopping material similar to CP 25, as manufactured by 3m Canada Inc.

2. Through Equipment Room walls, apply an approved caulking compound over the ram

packed fire stop material on both sides. 3. Through floors of Equipment Rooms, Kitchens and Janitor's closets, seal as described above. 4. Through foundation walls, co-operate with the waterproofing trade and apply an approved

caulking compound over ram-packed mineral wool on both sides. Over this, on both sides, apply a layer of glassfab tape embedded in two coats of an approved mastic compound.

5. Cover sleeves and openings around exposed piping in all finished areas with chrome

plated escutcheons. 3.23 ACCESS DOORS A. Access doors shall be provided under applicable Division for the particular type of

construction in which access is to be provided. Coordinate with General Contractor. B. Access doors are required in walls and ceilings to provide access to all fire dampers,

motorized dampers, duct mounted coils, smoke detectors, fan inlets and outlets, valves, strainers, gauges, meters, flow switch, etc. where indicated on the Architectural drawings.

3.24 EXCAVATION AND BACKFILL A. Do all excavation, bedding, backfill and related work required for mechanical work in

accordance with requirements of applicable Division except as varied by this article. B. Grade the bottom of the pipe trench excavation as required.



C. In firm undisturbed soil, lay pipes directly on the soil and shape soil to fit the lower 1/3 segment of all pipes and pipe bells. Ensure even bearing along the barrels.

D. In rock and shale excavate 150mm (6) below and a minimum of 200mm (8) to either

side of the pipe. Over excavation to be filled back with a bedding of 10mm (3/8) crushed stone or granular A gravel.

E. Prepare new bedding under the pipe in unstable soil, in fill, and in all cases where pipe

bedding has been removed in earlier excavation, particularly near perimeter walls of buildings, at manholes and catch basins. Compact to maximum possible density and support the pipe by 200mm (8) thick concrete cradle, spanning full length between firm supports. Install reinforcing steel in cradle and construct piers every 2400mm (8 ft.) or closer, down to solid load bearing strata. Provide a minimum of one pier per length of pipe. Use the same method where pipes cross.

F. Where excavation is necessary in proximity to and below the level of any footing, bed

with 14,000 kPa (2000 psi) concrete to the level of the highest adjacent footing. Proximity is determined by the angle of repose as established by the Engineer.

G. Provide support over at least the bottom one third segment of the pipe in all bedding

methods. H. Do not open trench ahead of pipe laying and bedding more than weather will permit.

Break up rocks and boulders and remove these by drilling and wedging. Do not use blasting unless specifically approved by the Engineer.

I. Do all backfilling in 150mm (6) layers with clean selected materials acceptable to the

Engineer. Backfill excess excavation and compact to the following standard Proctor percentage: Sodded Area 85% Under Paving 95% Under Floor Slabs 100% J. Dispose of excavated materials as directed by the Engineer. 3.25 PAINTING A. Provide all exposed ferrous metal work on equipment with at least one factory prime coat,

or paint one prime coat on job. Clean up or wire brush all equipment, etc., before painting. Finish painting in accordance with the applicable Section 09 90 00.

B. Co-ordinate with the applicable Division subcontractor and provide all required assistance

in identifying all piping circuits requiring colour coding. C. For Factory finishes, repaint or refinish surfaces damaged during shipment, erection or

construction work. 3.26 PIPE SYSTEM CLEANING A. General 1. Prior to assembly of pipe and piping components, all loose dirt, scale, oil and other

foreign matter on internal or external surface shall be removed. 2. Chips and burrs from machinery or thread cutting operations shall be blown out of pipe

assembly. Cutting oil shall be wiped from internal and external surfaces.



3. During fabrication and assembly, slag and weld splatter shall be removed from both

internal and external pipe joints by peening, chipping and wire brushing. 4. Degrease, in the presence of the Employer and the Engineer, chilled water piping using

procedures and chemicals to be provided water treatment specialist as referenced in Section 22 32 00.

5. Notify the Engineer prior to post erection cleaning in sufficient time to allow witnessing

by the engineer. Obtain agreement from the Engineer concerning cleaning procedures and scheduling. The Contractor shall arrange for proper disposal of cleaning and flushing fluids.

6. Prior to blowing or flushing of erected pipe systems, the contractor shall disconnect all

instrumentation and equipment, open wide all valves, and be certain all strainer screens are in place.

B. Water Flush 1. Pipe components shall be flushed with clean water until all particulate matter is removed

from the pipe system and flushing water discharged from the system is clean. 2. Minimum velocities of 4.0m/s shall be maintained at all points. 3. Flow shall be in the same direction as when in normal operation. 4. Discharge shall be from low points of lines, ends of headers and as otherwise required to

flush the entire system. 5. After flushing, any residual water shall be drained and/or blown out prior to testing.

Water flush shall apply to the following systems: a. Potable water-hot, chilled cold and cold. b. Water feature piping. 6. Flushing bypasses shall be provided on plate heat exchangers, filtration equipment and

pressure reducing valve assemblies. 7. During flushing all filtration equipment and pressure reducing valve assemblies shall be

bypassed. 8. The Contractor shall provide all necessary temporary pipe work for the purposes of

flushing the system. 9. The Contractor shall submit a Method Statement for the proposed flushing of the systems. 10. The domestic water system shall be disinfected. 3.27 PIPE SYSTEMS TEST A. All tests shall be performed as specified in the individual sections of Division 21, 22 & 23

in the presence of the Engineer and such other parties as may have legal jurisdiction. B. All defective work shall be promptly repaired or replaced and tests repeated until

approved by the Engineer.



C. Any damage resulting from the tests shall be repaired and/or damaged materials replaced at the Contractors expense.

D. The Engineer and all other having legal jurisdiction shall be notified at least 48 hours in

advance to allow witnessing when a test is to be performed. E. Tests shall be performed and approval of tests obtained in writing prior to backfilling,

insulation, painting or concealing in any manner. F. Records shall be prepared and retained for each system or section of system tested. Test

reports shall be signed by the Engineer and transmitted in triplicate to the Engineer. The Contractor shall furnish additional copies as required to all persons having legal jurisdiction.

G. Test reports shall include, but not necessarily be limited to, the following: 1. Identification of piping system or section tested. 2. Date of test and date of Engineers signature. 3. Testing medium, test equipment description (sketch if necessary) and description of test

procedure. 4. Test pressure, duration of test and recorded pressure drop,. H. Test shall be observed after the pipe and contents have stabilized at the ambient

temperature and the source of test pressure has been shut off. I. Pressure tests in general shall apply to piping only with all equipment, traps, relief valves

and instruments blocked off or disconnected. J. In no case shall piping or any component be subjected to pressures exceeding their rating. K. All system valves within the section being tested shall be open. L. Temporary restraints shall be provided on expansion joints and flexible connections

during pressure testing. M. All pipework systems shall be tested at 1.5 times the system working pressure. Unless

otherwise indicated. N. Gauges used for pressure testing shall be checked and calibrated against a dead weight

tester at least once per month and certified correct over the range of the gauge, to the Engineers approval.

O. Gauges used for testing shall have a minimum dial diameter of 120mm and scale

divisions equal to or less than the maximum allowable pressure drop. P. Hydrostatic tests shall apply to piping as specified in the individual sections. Q. The pressure shall be gradually raised to the value given and the source then blocked off.

The pressure shall not drop more than the amount indicated during the corresponding minimum time interval.

R. If an audible or visible leak is detected during testing, this shall be cause to disapprove the

test, even though the maximum allowable pressure drop has not been exceeded.



S. All joints shall be visually examined during test. Leaks shall be repaired and the complete testing procedure repeated.

T. Upon successful completion and approval of the tests, the piping shall be relieved of

pressure, drained and put into normal operation, except for potable water, which shall be sterilized before placing in service.

U. Testing over occupied areas shall be done in non-production times. V. After cleaning and testing, all open pipelines and valves shall be capped or plugged with

purpose made polythene closures, unless otherwise specified. END OF SECTION

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER EXPANSION FITTINGS AND LOOPS PLUMPING PIPING


SECTION 22 05 16- EXPANSION FITTINGS AND LOOPS PLUMPING PIPING PART 1 GENERAL 1.1 Section Includes 1.2 Related Sections And Divisions 1.3 References 1.4 Submittals 1.5 Regulatory Requirements 1.6 Extra materials PART 2 PRODUCTS 2.1 Flexible Pipe Connectors-Steel Piping 2.2 Flexible Pipe Connectors-Copper Piping 2.3 Expansion Joints-Stainless Steel Bellows Type 2.4 Expansion Joints-External Ring Controlled Stainless Steel Bellows Type 2.5 Expansion Joints-Single Sphere, Below Compensator 2.6 Expansion Joints-Two Ply Bronze Bellows Type 2.7 Expansion Joints-Low Pressure Compensator with Two Ply Bronze Bellows 2.8 Expansion Joints-Steel with Two Packed Sliding Sleeve 2.9 Expansion Joints-Copper with packed Sliding Sleeve PART 3 EXECUTION 3.1 Installation



PART 1 GENERAL

1.1 SECTION INCLUDES

A. Flexible pipe connectors.

B. Expansion joints and compensators.

C. Pipe loops, offsets, and swing joints.

1.2 RELATED SECTIONS AND DIVISIONS

A. Section 22 05 00 Plumbing Basic Materials and Methods.

B. Other sections in the Divisions 21, 22, 23 and 25. C. This section is also applicable to fire piping.

1.3 REFERENCES

A. ASTM A 269 - Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service; 2004.

B. EJMA (STDS) - EJMA Standards; Expansion Joint Manufacturers Association; 2003.

1.4 SUBMITTALS

A. Product Data: 1. Flexible Pipe Connectors: Indicate maximum temperature and pressure rating, face-to-face

length, live length, hose wall thickness, hose convolutions per foot (meter) and per assembly, fundamental frequency of assembly, braid structure, and total number of wires in braid.

2. Expansion Joints: Indicate maximum temperature and pressure rating, and maximum expansion compensation.

B. Samples: Submit two low pressure compensators 3/4 inch (20 mm) in size. C. Design Data: Indicate selection calculations.

D. Manufacturer's Instructions: Indicate manufacturer's installation instructions, special procedures, and external controls.

E. Project Record Documents: Record installed locations of flexible pipe connectors, expansion joints, anchors, and guides. F. Maintenance Data: Include adjustment instructions.

1.5 REGULATORY REQUIREMENTS A. Conform to UL requirements.

1.6 EXTRA MATERIALS

A. Supply two sets of packing for each packed expansion joint.

PART 2 PRODUCTS



2.1 FLEXIBLE PIPE CONNECTORS - STEEL PIPING

A. Inner Hose: Carbon Steel.

B. Exterior Sleeve: Single braided, stainless steel.

C. Pressure Rating: 125 psi and 450 degrees F (862 kPa and 232 degrees C).

D. Joint: Flanged.

E. Size: Use pipe sized units.

F. Maximum offset: 3/4 inch (20 mm) on each side of installed center line.

2.2 FLEXIBLE PIPE CONNECTORS - COPPER PIPING

A. Inner Hose: Bronze.

B. Exterior Sleeve: Braided bronze.

C. Pressure Rating: 125 psi and 450 degrees F (862 kPa and 232 degrees C).

D. Joint: Flanged.


F. Maximum offset: 3/4 inch (20 mm) on each side of installed center line.

G. Application: Copper piping.

2.3 EXPANSION JOINTS - STAINLESS STEEL BELLOWS TYPE A. Pressure Rating: 125 psi and 400 degrees F (862 kPa and 204 degrees C).

B. Maximum Compression: 1-3/4 inches (45 mm).

C. Maximum Extension: 1/4 inch (6 mm).

D. Joint: Flanged.


F. Application: Steel piping 3 inches (75 mm) and under.

2.4 EXPANSION JOINTS - EXTERNAL RING CONTROLLED STAINLESS STEEL BELLOWS TYPE

A. Pressure Rating: 125 psi and 400 degrees F (862 kPa and 204 degrees C).

B. Maximum Compression: 15/16 inch (24 mm).

C. Maximum Extension: 5/16 inch (8 mm).

D. Maximum Offset: 1/8 inch (3 mm). E. Joint: Flanged.

F. Size: Use pipe sized units.

G. Accessories: Internal flow liner.

H. Application: Steel piping over 2 inches (50 mm).

2.5 EXPANSION JOINTS - SINGLE SPHERE, ELBOW COMPENSATOR

A. Body: Teflon.



B. Pressure Rating, Sizes 3/4 Inch to 2 Inch (20 mm to 50 mm): 150 psi and 210 degrees F (1040 kPa and 99 degrees C).

C. Pressure Rating, Sizes 1-1/2 Inch to 12 Inch (32 mm to 300 mm): 150 psi and 250 degrees F (1040 kPa and 121 degrees C).

D. Pressure Rating, Sizes 14 Inch to 24 Inch (350 mm to 600 mm): 105 psi and 250 degrees F (725 kPa and 121 degrees C).

E. Maximum Compression: 1/2 inch (13 mm).

F. Maximum Elongation: 3/8 inch (10 mm).

G. Maximum Offset: 3/8 inch (10 mm).

H. Maximum Angular Movement: 15 degrees.

I. Joint: Tapped steel flanges.

J. Size: Use pipe sized units.

K. Accessories: Control rods.

L. Application: Steel piping 2 inches (50 mm) and over.

2.6 EXPANSION JOINTS - TWO-PLY BRONZE BELLOWS TYPE

A. Construction: Bronze with anti-torque device, limit stops, internal guides.

B. Pressure Rating: 125 psi and 400 degrees F (862 kPa and 204 degrees C).

C. Maximum Compression: 1-3/4 inches (45 mm). D. Maximum Extension: 1/4 inch (6 mm).

E. Joint: Soldered.


G. Application: Copper piping.

2.7 EXPANSION JOINTS - LOW PRESSURE COMPENSATOR WITH TWO-PLY BRONZE BELLOWS A. Working Pressure: 75 psi (510 kPa).

B. Maximum Temperatures: 250 degrees F (121 degrees C).

C. Maximum Compression: 1/2 inch (12.7 mm).

D. Maximum Extension: 5/32 inch (4.0 mm).

E. Joint: Soldered.


G. Application: Copper or steel piping 3 inches (75 mm) and under.

2.8 EXPANSION JOINTS - STEEL WITH PACKED SLIDING SLEEVE

A. Working Pressure and Temperature: Class 150.

B. Joint: Flanged.

C. Size: Use pipe sized units.

D. Application: Steel piping 2 inches (50 mm) and over.

2.9 EXPANSION JOINTS - COPPER WITH PACKED SLIDING SLEEVE



A. Working Pressure: 125 psi (862 kPa).

B. Maximum Temperature: 250 degrees F (121 degrees C).

C. Joint: Flanged.

D. Size: Use pipe sized units.

E. Application: Copper or steel piping 2 inches (50 mm) and over.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Install in accordance with EJMA (Expansion Joint Manufacturers Association) Standards.

C. Install flexible pipe connectors on pipes connected to vibration isolated equipment. Provide line size flexible connectors.

D. Install flexible connectors at right angles to displacement. Install one end immediately adjacent to isolated equipment and anchor other end. Install in horizontal plane unless indicated otherwise.

E. Anchor pipe to building structure where indicated. Provide pipe guides so movement is directed along axis of pipe only. Erect piping such that strain and weight is not on cast connections or apparatus.

F. Provide support and equipment required to control expansion and contraction of piping. Provide loops, pipe offsets, and swing joints, or expansion joints where required.

G. Substitute grooved piping for vibration isolated equipment instead of flexible connectors. Grooved piping need not be anchored.

END OF SECTION

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER METERS AND GAGES PLUMBING PIPING


SECTION 22 05 19- METERS AND GAGES PLUMBING PIPING PART 1 GENERAL 1.1 Summary 1.2 Quality Assurance 1.3 Submittals PART 2 PRODUCTS 2.1 Pressure Gauges 2.2 Pressure Gauge Taps 2.3 Pressure/Temperature Test Plugs 2.4 Stem Type Thermometers 2.5 Water Flow Meter PART 3 EXECUTION 3.1 Installation 3.2 Application

VOLUME IIB MECHANICAL SPECIFICATIONS INTERNATIONAL CONSULTANCY CENTER METERS AND GAGES PLUMBING PIPING


PART 1 GENERAL 1.1 SUMMARY A. This Section includes flow meters, pressure gauges and pressure gauge taps,

thermometers and thermometer wells, static pressure and filter gauges. 1.2 QUALITY ASSURANCE A. Reference Standards: 1. American National Standards Institute (ANSI). 1.3 SUBMITTALS A. Submit with shop drawings list, which indicates use, operating range, total range and

location. PART 2 PRODUCTS 2.1 PRESSURE GAUGES A. 114mm diameter in