Addendum No. 2 - Chicago · 2020. 12. 25. · 312000 earth moving . division 32 exterior improvements . 321216 asphalt paving 321313 concrete paving 321443 porous unit paving 321713

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Addendum No. 2

Thomas Jefferson Pumping Station Improvements

DWM PROJECT NO. 13-109 SPECIFICATION NO. 226043

For which bids will be opened in the office of the Department of Procurement Services,

Room 103, Chicago, Illinois, 60602 on September 27, 2016 at 11:00 a.m. Central Time:

BIDDER WILL ACKNOWLEDGE RECEIPT OF THIS ADDENDUM

IN THE SPACE PROVIDED ON THE PROPOSAL PAGE

NOTICE OF ADDENDUM Addendum:

The attached drawings and specifications are updated and included as Addendum No. 2:

o Book 3 Table of Contents Pages TOC - 1 to TOC – 4

o 092216 – Non-Structural Metal Framing (New Book 3 specification section)

o 092400 – Portland Cement Plastering (New Book 3 specification section)

o 092613 – Gypsum Veneer Plastering (New Book 3 specification section)

o 092900 – Gypsum Board (New Book 3 specification section)

o A201 “Partial South Elevation”

o A202 “Partial North Elevation”

o A203 “Partial North, South, & West Elevations”

o A204 “West Elevation”

o A205 “East Elevation 1”

o A206 “East Elevation 2”

o A504 “Cornice Repairs”

o C700 “Utility Details” Bidder Questions and Answers: 1. Question: Standard inlet detail 3 on C700 calls outs that 8” ductile iron pipe must be used for connection to

catch basin. However, the Utility Plan on C400 shows 6” perforated PVC connecting the inlets to the catch

basins. Please confirm 8” DIP is not required.

Response: 8” DIP is not required. Refer to revised drawing C700 in Addendum No. 2. 2. Question: On the exterior elevations (sheets A201-A206), keynotes 5, 6, and 18 are listed under the Exterior

Restoration and Repair General Reference Notes but not called out anywhere on the elevations. Please clarify if there is any work to be performed associated with these keynotes.

Response: Notes and corresponding call outs are revised as shown on revised drawings A201- A206 in Addendum No 2. Key note 18 and the call out are on the original drawing A204. Revised drawing A201 also referenced note 18.

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3. Question: The plans show some work for which no specifications have been provided, including plaster, gypsum board, and metal framing. Please provide specifications.

Response: Refer to new Book 3 Specification Sections 092216, 092400, 092613, and 092900 in Addendum No. 2.

4. Question: Specification 012200 Unit Prices – Item No.4 lists requirements for 19 different molds for the terra

cotta, and 130 individual units total is listed for replacement in the schedule of prices. Since only a limited number of pieces can be made per individual mold, can the 130 pieces be broken out per mold type?

Response: No. Refer to drawings A207 and A208 for details.

5. Question: Spec Section 051200 Structural Steel Framing includes qualifications requiring the fabricator and

erector to be AISC certified. Can these requirements be waived to allow more competitive bidding?

Response: No.

6. Question: Drawing A504, Note 5 for masonry repairs call for replacing steel members that are exhibiting more

than 20% section loss. Can an allowance or an assumed quantity be provided by the city? Until the steel is

exposed, It is unclear if all lintels will need to be replaced or none. Please advise.

Response: Refer to revised drawing A504 in Addendum No. 2, which requires Commissioner’s approval

prior to steel removal and replacement.

7. Question: Is there any more information regarding the entry and exit loop system? I have talked with vendors

about the system and they need more information as to what type of controller is required along with the

manufacture of the system. Only information I can find is located on drawing E200 for just the operation of the

gate.

Response: The specifications identify the necessary performance requirements for the entry and exit

loop system. The system utilized must meet the requirements dictated in all applicable specification

sections.

8. Question: During scaffolding installation in the pump room, are the painters able to use the crane for moving

scaffolding elements: frames, bracing, etc…?

Response: No.

Jefferson Pump Station Improvements TOC - 1 TABLE OF CONTENTS

DWM Project No. 13-109 Addendum No. 1

GEC Project No. 09009.007

TABLE OF CONTENTS

SPECIFICATIONS

DIVISION 0 PROCUREMENT AND CONTRACTING REQUIREMENTS

000115 LIST OF DRAWING SHEETS

003126 EXISTING HAZARDOUS MATERIAL INFORMATION

003132 GEOTECHNICAL DATA

DIVISION 1 GENERAL REQUIREMENTS

011000 SUMMARY

011010 SECURITY REQUIREMENTS, HEALTH AND SAFETY PLANS, WORK AREA

CLOSURES, HOT WORK PERMITS

012200 UNIT PRICES

013100 PROJECT MANAGEMENT AND COORDINATION

013350 WEB-BASED PROJECT MANAGEMENT AND COLLABORATION SYSTEM

013516 ALTERATION PROJECT PROCEDURES

014000 QUALITY REQUIREMENTS

015000 TEMPORARY FACILITIES AND CONTROLS

017300 EXECUTION

017419 CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL

017700 CLOSEOUT PROCEDURES

017840 COMPUTERIZED MAINTENANCE MANAGEMENT SYSTEM DATA

DIVISION 2 EXISTING CONDITIONS

024119 SELECTIVE STRUCTURE DEMOLITION

028250 12-FOOT STEEL FENCE

DIVISION 3 CONCRETE

030130 MAINTENANCE OF CAST-IN-PLACE CONCRETE

033000 CAST-IN-PLACE CONCRETE

035100 GYPSUM DECK REPAIR

035216 LIGHTWEIGHT INSULATING CONCRETE

037300 CONCRETE DECK REPAIR

DIVISION 4 MASONRY

040110 MASONRY CLEANING

040120.63 BRICK MASONRY REPAIR

040120.64 BRICK MASONRY REPOINTING

040140.61 STONE REPAIR

040140.63 TERRA COTTA RESTORATION

042000 UNIT MASONRY

042200 CONCRETE UNIT MASONRY

DIVISION 5 METALS

050170.61 DECORATIVE METAL REPAIR

051200 STRUCTURAL STEEL FRAMING

055000 METAL FABRICATIONS

055213 PIPE AND TUBE RAILINGS

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DIVISION 6 WOOD, PLASTICS AND COMPOSITES

061053 MISCELLANEOUS ROUGH CARPENTRY

064116 PLASTIC-LAMINATE-FACED ARCHITECTURAL CABINETS

DIVISION 7 THERMAL AND MOISTURE PROTECTION

075113 COLD-APPLIED BUILT-UP ASPHALT ROOFING

076200 SHEET METAL FLASHING AND TRIM

077000 ROOF AND WALL SPECIALTIES AND ACCESSORIES

077200 ROOF ACCESSORIES

079200 JOINT SEALANTS

DIVISION 8 OPENINGS

081113 HOLLOW METAL DOORS AND FRAMES

085115 ALUMINUM WINDOWS

085653 SECURITY WINDOWS

087100 DOOR HARDWARE

088000 GLAZING

089119 FIXED LOUVERS

DIVISION 9 FINISHES

092216 NON-STRUCTURAL METAL FRAMING (ADDED ADDENDUM NO. 1)

092400 PORTLAND CEMENT PLASTERING (ADDED ADDENDUM NO. 1)

092613 GYPSUM VENEER PLASTERING (ADDED ADDENDUM NO. 1)

092900 GYPSUM BOARD (ADDED ADDENDUM NO. 1)

095113 ACOUSTICAL PANEL CEILINGS

096614 CEMENTITIOUS TERRAZZO FLOORING RESTORATION

096723 RESINOUS FLOORING

099113 EXTERIOR PAINTING

099123 INTERIOR PAINTING

099726 CEMENTITIOUS COATINGS

DIVISION 10 SPECIALTIES

101423 PANEL SIGNAGE

102800 TOILET, BATH, AND LAUNDRY ACCESSORIES

DIVISION 11 EQUIPMENT

113100 RESIDENTIAL APPLIANCES

DIVISION 12 FURNISHINGS

NOT USED

DIVISION 13 SPECIAL CONSTRUCTION

NOT USED

DIVISION 14 CONVEYING EQUIPMENT

NOT USED

DIVISION 21 FIRE SUPPRESSION

NOT USED

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DIVISION 22 PLUMBING

220513 BASIC MECHANICAL REQUIREMENTS

220518 ESCUTCHEONS FOR PLUMBING PIPING

220523.12 BALL VALVES FOR PLUMBING PIPING

220529 HANGERS AND SUPPORTS

220553 IDENTIFICATION FOR PLUMBING PIPING AND EQUIPMENT

221116 DOMESTIC WATER PIPING

221316 SANITARY WASTE AND VENT PIPINT

221416 WATER DISTRIBUTION PIPING

223400 FUEL-FIRED, DOMESTIC WATER HEATERS

224100 RESIDENTIAL PLUMBING FIXTURES

224213.13 COMMERCIAL WATER CLOSETS

224213.16 COMMERCIAL URINALS

DIVISION 23 HEATING, VENTILATING AND AIR CONDITIONING

230503 GENERAL PROVISIONS FOR HVAC WORK

230505 BASIC HVAC MATEIALS AND METHODS

230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

230593 TESTING, ADJUSTING AND BALANCING FOR HVAC

230700 HVAC INSULATION

230923.12 CONTROL DAMPERS

232300 REFRIGERANT PIPING

233113 METAL DUCTS

233713 DIFFUSERS, REGISTERS AND GRILLES

234100 PARTICULATE AIR FILTRATION

236313 AIR-COOLED REFRIGERANT CONDENSERS

237313 MODULAR INDOOR CENTRAL STATION AIR HANDLING UNITS

238123 ROOM AIR CONDITIONERS

DIVISION 26 ELECTRICAL

260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

260523 CONTROL-VOLTAGE ELECTRICAL POWER CABLES

260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

260544 SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND CABLING

260553 IDENTIFICATION FOR ELECTRICAL SYSTEMS

262726 WIRING DEVICES

265100 INTERIOR LIGHTING

DIVISION 27 COMMUNICATIONS

NOT USED

DIVISION 28 ELECTRONIC SAFETY AND SECURITY

281300 ACCESS CONTROL SYSTEM

281600 INTRUSION DETECTION

282300 VIDEO SURVEILLANCE

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DIVISION 31 EARTHWORK

311000 SITE CLEARING

312000 EARTH MOVING

DIVISION 32 EXTERIOR IMPROVEMENTS

321216 ASPHALT PAVING

321313 CONCRETE PAVING

321443 POROUS UNIT PAVING

321713 PARKING BUMPERS

321723 PAVEMENT MARKINGS

329113 SOIL PREPARATION

329200 SODDED LAWNS

329300 PLANTS

DIVISION 33 UTILITIES

334100 STORM UTUILITY DRAINAGE PIPING

334600 SUBDRAINAGE

END OF TABLE OF CONTENTS

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Jefferson Pump Station Improvements 092216 - 1 NON-STRUCTURAL

DWM Project No. 13-109 METAL FRAMING

GEC Project No. 09009.007 Addendum No. 1

SECTION 092216

NON-STRUCTURAL METAL FRAMING

ADDED – ADDENDUM NO. 1

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Non-load-bearing steel framing systems for interior gypsum board assemblies.

2. Suspension systems for interior gypsum ceilings, soffits, and grid systems.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Fire-Test-Response Characteristics: For fire-resistance-rated assemblies that incorporate non-

load-bearing steel framing, provide materials and construction identical to those tested in

assembly indicated, according to ASTM E 119 by an independent testing agency.

B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical

to those tested in assembly indicated, according to ASTM E 90 and classified according to

ASTM E 413 by an independent testing agency.

2.2 FRAMING SYSTEMS

A. Framing Members, General: Comply with ASTM C 754 for conditions indicated.

1. Steel Sheet Components: Comply with ASTM C 645 requirements for metal unless

otherwise indicated.

2. Protective Coating: Manufacturer’s standard rust-inhibiting coating.

B. Studs and Runners: ASTM C 645. Use steel studs and runners.

1. Steel Studs and Runners:

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a. Minimum Base-Metal Thickness: As indicated on Drawings or 0.033 inch (0.84

mm) if not indicated on drawings.

b. Depth: As indicated on Drawings

C. Slip-Type Head Joints: Provide the following:

1. Single Long-Leg Runner System: ASTM C 645 top runner with 2-inch- (51-mm-) deep

flanges in thickness not less than indicated for studs, installed with studs friction fit into

top runner and with continuous bridging located within 12 inches (305 mm) of the top of

studs to provide lateral bracing.

a. Products: Subject to compliance with requirements, available products that may be

incorporated into the Work include, but are not limited to, the following:

1) Dietrich Metal Framing; SLP-TRK Slotted Deflection Track.

2) MBA Building Supplies; FlatSteel Deflection Track

3) Steel Network Inc. (The); VertiTrack VTD Series.

4) Superior Metal Trim; Superior Flex Track System (SFT).

5) Telling Industries; [Vertical Slip Track] [Vertical Slip Track II].

D. Firestop Tracks: Top runner manufactured to allow partition heads to expand and contract with

movement of the structure while maintaining continuity of fire-resistance-rated assembly

indicated; in thickness not less than indicated for studs and in width to accommodate depth of

studs.

1. Products: Subject to compliance with requirements, available products that may be


a. Fire Trak Corp.; Fire Trak System[ attached to studs with Fire Trak Posi Klip.

b. Grace Construction Products; FlameSafe FlowTrak System.

c. Metal-Lite, Inc.; The System.

E. Flat Strap and Backing Plate: Steel sheet for blocking and bracing in length and width

indicated.

1. Minimum Base-Metal Thickness: As indicated on Drawings 0.033 inch (0.84 mm).

F. Cold-Rolled Channel Bridging: Steel, 0.053-inch (1.34-mm) minimum base-metal thickness,

with minimum 1/2-inch- (13-mm-) wide flanges.

1. Depth: 1-1/2 inches (38 mm)].

2. Clip Angle: Not less than 1-1/2 by 1-1/2 inches (38 by 38 mm), 0.068-inch- (1.72-mm-)

thick, galvanized steel.

G. Hat-Shaped, Rigid Furring Channels: ASTM C 645.

1. Minimum Base-Metal Thickness: 0.033 inch (0.84 mm).

2. Depth: 7/8 inch (22.2 mm).

H. Resilient Furring Channels: 1/2-inch- (13-mm-) deep, steel sheet members designed to reduce

sound transmission.

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http://www.specagent.com/LookUp/?uid=123456814680&mf=04&&mf=04&src=wd









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1. Configuration: hat shaped.

I. Cold-Rolled Furring Channels: 0.053-inch (1.34-mm) uncoated-steel thickness, with minimum

1/2-inch- (13-mm-) wide flanges.

1. Depth: As indicated on Drawings 3/4 inch (19 mm).

2. Furring Brackets: Adjustable, corrugated-edge type of steel sheet with minimum

uncoated-steel thickness of 0.033 inch (0.8 mm).

3. Tie Wire: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, 0.062-inch- (1.59-

mm-) diameter wire, or double strand of 0.048-inch- (1.21-mm-) diameter wire.

J. Z-Shaped Furring: With slotted or nonslotted web, face flange of 1-1/2 inches (32 mm), wall

attachment flange of 7/8 inch (22 mm), minimum uncoated-metal thickness of 0.018 inch (0.45

mm), and depth required to fit insulation thickness indicated.

2.3 SUSPENSION SYSTEMS

A. Tie Wire: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, 0.062-inch- (1.59-mm-)

diameter wire, or double strand of 0.048-inch- (1.21-mm-) diameter wire.

B. Hanger Attachments to Concrete:

1. Anchors: Fabricated from corrosion-resistant materials with holes or loops for attaching

wire hangers and capable of sustaining, without failure, a load equal to 5 times that

imposed by construction as determined by testing according to ASTM E 488 by an

independent testing agency.

a. Type: Postinstalled, expansion anchor.

2. Powder-Actuated Fasteners: Suitable for application indicated, fabricated from

corrosion-resistant materials with clips or other devices for attaching hangers of type

indicated, and capable of sustaining, without failure, a load equal to 5 times that imposed

by construction as determined by testing according to ASTM E 1190 by an independent

testing agency.

C. Wire Hangers: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, 0.16 inch (4.12 mm)

in diameter.

D. Flat Hangers: Steel sheet, in size indicated on Drawings.

E. Carrying Channels: Cold-rolled, commercial-steel sheet with a base-metal thickness of 0.053

inch (1.34 mm) and minimum 1/2-inch- (13-mm-) wide flanges.

1. Depth: As indicated on Drawings

F. Furring Channels (Furring Members):

1. Cold-Rolled Channels: 0.053-inch (1.34-mm) uncoated-steel thickness, with minimum

1/2-inch- (13-mm-) wide flanges, 3/4 inch (19 mm) deep.

2. Steel Studs and Runners: ASTM C 645.

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a. Minimum Base-Metal Thickness: 0.033 inch (0.84 mm).

b. Depth: As indicated on Drawings

2.4 AUXILIARY MATERIALS

A. General: Provide auxiliary materials that comply with referenced installation standards.

1. Fasteners for Metal Framing: Of type, material, size, corrosion resistance, holding

power, and other properties required to fasten steel members to substrates.

B. Isolation Strip at Exterior Walls: Provide the following:

1. Foam Gasket: Adhesive-backed, closed-cell vinyl foam strips that allow fastener

penetration without foam displacement, 1/8 inch (3.2 mm) thick, in width to suit steel

stud size.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and substrates, with Installer present, and including welded hollow-metal frames,

cast-in anchors, and structural framing, for compliance with requirements and other conditions

affecting performance of the Work.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Suspended Assemblies: Coordinate installation of suspension systems with installation of

overhead structure to ensure that anchors and other provisions for anchorages to building

structure have been installed to receive hangers at spacing required to support the Work and that

hangers will develop their full strength.

1. Furnish concrete inserts and other devices indicated to other trades for installation in

advance of time needed for coordination and construction.

3.3 INSTALLATION, GENERAL

A. Install supplementary framing, and blocking to support fixtures, equipment services, heavy trim,

grab bars, toilet accessories, furnishings, or similar construction.

B. Install bracing at terminations in assemblies.

C. Do not bridge building control and expansion joints with non-load-bearing steel framing

members. Frame both sides of joints independently.

3.4 INSTALLING FRAMED ASSEMBLIES

A. Install framing system components according to spacings indicated, but not greater than

spacings required by referenced installation standards for assembly types.

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1. Single-Layer Application: 16 inches (406 mm) o.c. unless otherwise indicated.

2. Multilayer Application: 16 inches (406 mm) o.c. unless otherwise indicated.

3. Tile Backing Panels: 16 inches (406 mm)] o.c. unless otherwise indicated.

B. Where studs are installed directly against exterior masonry walls or dissimilar metals at exterior

walls, install isolation strip between studs and exterior wall.

C. Install studs so flanges within framing system point in same direction.

D. Install tracks (runners) at floors and overhead supports. Extend framing full height to structural

supports or substrates above suspended ceilings except where partitions are indicated to

terminate at suspended ceilings. Continue framing around ducts penetrating partitions above

ceiling.

1. Slip-Type Head Joints: Where framing extends to overhead structural supports, install to

produce joints at tops of framing systems that prevent axial loading of finished

assemblies.

2. Door Openings: Screw vertical studs at jambs to jamb anchor clips on door frames;

install runner track section (for cripple studs) at head and secure to jamb studs.

a. Install two studs at each jamb.

b. Install cripple studs at head adjacent to each jamb stud, with a minimum 1/2-inch

(13-mm) clearance from jamb stud to allow for installation of control joint in

finished assembly.

c. Extend jamb studs through suspended ceilings and attach to underside of overhead

structure.

3. Other Framed Openings: Frame openings other than door openings the same as required

for door openings unless otherwise indicated. Install framing below sills of openings to

match framing required above door heads.

4. Fire-Resistance-Rated Partitions: Install framing to comply with fire-resistance-rated

assembly indicated and support closures and to make partitions continuous from floor to

underside of solid structure.

a. Firestop Track: Where indicated, install to maintain continuity of fire-resistance-

rated assembly indicated.

5. Sound-Rated Partitions: Install framing to comply with sound-rated assembly indicated.

6. Curved Partitions:

a. Bend track to uniform curve and locate straight lengths so they are tangent to arcs.

b. Begin and end each arc with a stud, and space intermediate studs equally along

arcs. On straight lengths of no fewer than two studs at ends of arcs, place studs 6

inches (150 mm) o.c.

E. Direct Furring:

1. Screw to wood framing.

2. Attach to concrete or masonry with stub nails, screws designed for masonry attachment,

or powder-driven fasteners spaced 24 inches (610 mm) o.c.

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F. Z-Furring Members:

1. Erect insulation, specified in Section 072100 "Thermal Insulation," vertically and hold in

place with Z-furring members spaced 24 inches (610 mm) o.c.

2. Except at exterior corners, securely attach narrow flanges of furring members to wall

with concrete stub nails, screws designed for masonry attachment, or powder-driven

fasteners spaced 24 inches (610 mm) o.c.

3. At exterior corners, attach wide flange of furring members to wall with short flange

extending beyond corner; on adjacent wall surface, screw-attach short flange of furring

channel to web of attached channel. At interior corners, space second member no more

than 12 inches (305 mm) from corner and cut insulation to fit.

G. Installation Tolerance: Install each framing member so fastening surfaces vary not more than

1/8 inch (3 mm) from the plane formed by faces of adjacent framing.

3.5 INSTALLING SUSPENSION SYSTEMS

A. Install suspension system components according to spacings indicated, but not greater than

spacings required by referenced installation standards for assembly types.

B. Isolate suspension systems from building structure where they abut or are penetrated by

building structure to prevent transfer of loading imposed by structural movement.

C. Suspend hangers from building structure as follows:

1. Install hangers plumb and free from contact with insulation or other objects within ceiling

plenum that are not part of supporting structural or suspension system.

a. Splay hangers only where required to miss obstructions and offset resulting

horizontal forces by bracing, countersplaying, or other equally effective means.

2. Where width of ducts and other construction within ceiling plenum produces hanger

spacings that interfere with locations of hangers required to support standard suspension

system members, install supplemental suspension members and hangers in the form of

trapezes or equivalent devices.

a. Size supplemental suspension members and hangers to support ceiling loads within

performance limits established by referenced installation standards.

3. Wire Hangers: Secure by looping and wire tying, either directly to structures or to

inserts, eye screws, or other devices and fasteners that are secure and appropriate for

substrate, and in a manner that will not cause hangers to deteriorate or otherwise fail.

4. Flat Hangers: Secure to structure, including intermediate framing members, by attaching

to inserts, eye screws, or other devices and fasteners that are secure and appropriate for

structure and hanger, and in a manner that will not cause hangers to deteriorate or

otherwise fail.

5. Do not connect or suspend steel framing from ducts, pipes, or conduit.

D. Fire-Resistance-Rated Assemblies: Wire tie furring channels to supports.

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E. Installation Tolerances: Install suspension systems that are level to within 1/8 inch in 12 feet (3

mm in 3.6 m) measured lengthwise on each member that will receive finishes and transversely

between parallel members that will receive finishes.

END OF SECTION 092216

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Jefferson Pump Station Improvements 092400 - 1 PORTLAND CEMENT PLASTERING



SECTION 092400

PORTLAND CEMENT PLASTERING


PART 1 - GENERAL




1.2 SUMMARY


1. Interior vertical plasterwork.

2. Interior horizontal and nonvertical plasterwork.

B. Related Requirements:

1. Section 092216 "Non-Structural Metal Framing" for non-structural framing and

suspension systems that support gypsum board panels.

2. Section 099123 “Interior Painting”



B. Samples for Verification: For each type of factory-prepared finish coat and for each color and

texture specified, 12 by 12 inches, and prepared on rigid backing.

1.4 QUALITY ASSURANCE

A. Mockups: Build mockups to verify selections made under Sample submittals, to demonstrate

aesthetic effects, and to set quality standards for materials and execution.

1. Build mockups for each substrate and finish texture indicated for cement plastering,

including accessories.

a. Size: TBD.

2. For interior plasterwork, simulate finished lighting conditions for review of mockups.

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3. Approval of mockups does not constitute approval of deviations from the Contract

Documents contained in mockups unless Architect specifically approves such deviations

in writing.

4. Subject to compliance with requirements, approved mockups may become part of the

completed Work if undisturbed at time of Substantial Completion.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Store materials inside under cover, and keep them dry and protected against damage from

weather, moisture, direct sunlight, surface contamination, corrosion, construction traffic, and

other causes.

1.6 FIELD CONDITIONS

A. Comply with ASTM C 926 requirements.

B. Interior Plasterwork: Maintain room temperatures at greater than 40 deg F (4.4 deg C) for at

least 48 hours before plaster application, and continuously during and after application.

1. Avoid conditions that result in plaster drying out during curing period. Distribute heat

evenly; prevent concentrated or uneven heat on plaster.

2. Ventilate building spaces as required to remove water in excess of that required for

hydrating plaster in a manner that prevents drafts of air from contacting surfaces during

plaster application and until plaster is dry.

C. Factory-Prepared Finishes: Comply with manufacturer's written recommendations for

environmental conditions for applying finishes.

PART 2 - PRODUCTS


A. Fire-Resistance Ratings: Where indicated, provide cement plaster assemblies identical to those

of assemblies tested for fire resistance according to ASTM E 119 by a qualified testing agency.

2.2 METAL LATH

A. Expanded-Metal Lath: ASTM C 847, cold-rolled carbon-steel sheet with

ASTM A 653/A 653M, G60 (Z180), hot-dip galvanized-zinc coating.

1. ClarkDietrich™ Building Systems or equivalent manufacturer.

2. Diamond-Mesh Lath: Flat 3.4 lb/sq. yd. (1.8 kg/sq. m).

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2.3 ACCESSORIES

A. General: Comply with ASTM C 1063, and coordinate depth of trim and accessories with

thicknesses and number of plaster coats required.

B. Metal Accessories:

1. ClarkDietrich™ Building Systems or equivalent manufacturer.

2. Cornerbeads: Fabricated from zinc.

a. Smallnose cornerbead with expanded flanges; use unless otherwise indicated.

b. Smallnose cornerbead with perforated flanges; use on curved corners.

c. Smallnose cornerbead with expanded flanges reinforced by perforated stiffening

rib; use on columns and for finishing unit masonry corners.

3. Casing Beads: Fabricated from zinc; square-edged style; with expanded flanges.

4. Control Joints: Fabricated from zinc ; one-piece-type, folded pair of unperforated screeds

in M-shaped configuration; with perforated flanges and removable protective tape on

plaster face of control joint.

2.4 MISCELLANEOUS MATERIALS

A. Water for Mixing and Finishing Plaster: Potable and free of substances capable of affecting

plaster set or of damaging plaster, lath, or accessories.

B. Fiber for Base Coat: Alkaline-resistant glass or polypropylene fibers, 1/2 inch (13 mm) long,

free of contaminants, manufactured for use in cement plaster.

C. Fasteners for Attaching Metal Lath to Substrates: ASTM C 1063.

D. Wire: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, not less than 0.0475-inch (1.21-

mm) diameter unless otherwise indicated.

2.5 PLASTER MATERIALS

A. Portland Cement: ASTM C 150/C 150M, Type I.

1. Color for Finish Coats: White.

B. Lime: ASTM C 206, Type S; or ASTM C 207, Type S.

C. Sand Aggregate: ASTM C 897.

1. Color for Job-Mixed Finish Coats: White.

2.6 PLASTER MIXES

A. General: Comply with ASTM C 926 for applications indicated.

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1. Fiber Content: Add fiber to base-coat mixes after ingredients have mixed at least two

minutes. Comply with fiber manufacturer's written instructions for fiber quantities in

mixes, but do not exceed 1 lb of fiber/cu. yd. (0.6 kg of fiber/cu. m) of cementitious

materials.

B. Base-Coat Mixes for Use over Metal Lath: Scratch and brown coats for three-coat plasterwork

as follows:

1. Portland Cement Mixes:

a. Scratch Coat: For cementitious material, mix 1 part portland cement and 3/4 to 1-

1/2 parts lime. Use 2-1/2 to 4 parts aggregate per part of cementitious material.

b. Brown Coat: For cementitious material, mix 1 part portland cement and 3/4 to 1-

1/2 parts lime. Use 3 to 5 parts aggregate per part of cementitious material, but not

less than volume of aggregate used in scratch coat.

2. Masonry Cement Mixes:

a. Scratch Coat: Mix 1 part masonry cement and 2-1/2 to 4 parts aggregate.

b. Brown Coat: Mix 1 part masonry cement and 3 to 5 parts aggregate, but not less

than volume of aggregate used in scratch coat.

3. Portland and Masonry Cement Mixes:

a. Scratch Coat: For cementitious material, mix 1 part portland cement and 1 part

masonry cement. Use 2-1/2 to 4 parts aggregate per part of cementitious material.

b. Brown Coat: For cementitious material, mix 1 part portland cement and 1 part

masonry cement. Use 3 to 5 parts aggregate per part of cementitious material, but

not less than volume of aggregate used in scratch coat.

4. Plastic Cement Mixes:

a. Scratch Coat: Mix 1 part plastic cement and 2-1/2 to 4 parts aggregate.

b. Brown Coat: Mix 1 part plastic cement and 3 to 5 parts aggregate, but not less than

volume of aggregate used in scratch coat.

5. Portland and Plastic Cement Mixes:

a. Scratch Coat: For cementitious material, mix 1 part plastic cement and 1 part

portland cement. Use 2-1/2 to 4 parts aggregate per part of cementitious material.

b. Brown Coat: For cementitious material, mix 1 part plastic cement and 1 part

portland cement. Use 3 to 5 parts aggregate per part of cementitious material, but

not less than volume of aggregate used in scratch coat.

C. Base-Coat Mixes for Use over Unit Masonry: Single base (scratch) coat for two-coat

plasterwork on low-absorption plaster bases as follows:

1. Portland Cement Mix: For cementitious material, mix 1 part portland cement and 0 to 3/4

part lime. Use 2-1/2 to 4 parts aggregate per part of cementitious material.

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2. Portland and Masonry Cement Mix: For cementitious material, mix 1 part portland

cement and 1 part masonry cement. Use 2-1/2 to 4 parts aggregate per part of

cementitious material.

3. Plastic Cement Mix: Use 1 part plastic cement and 2-1/2 to 4 parts aggregate.

D. Job-Mixed Finish-Coat Mixes:

1. Portland Cement Mix: For cementitious materials, mix 1 part portland cement and 1-1/2

to 2 parts lime. Use 1-1/2 to 3 parts aggregate per part of cementitious material.

2. Masonry Cement Mix: Use 1 part masonry cement and 1-1/2 to 3 parts aggregate.

3. Portland and Masonry Cement Mix: For cementitious materials, mix 1 part portland

cement and 1 part masonry cement. Use 1-1/2 to 3 parts aggregate per part of

cementitious material.

4. Plastic Cement Mix: Use 1 part plastic cement and 1-1/2 to 3 parts aggregate.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions, with Installer present, for compliance with requirements for

installation tolerances and other conditions affecting performance of the Work.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Protect adjacent work from soiling, spattering, moisture deterioration, and other harmful effects

caused by plastering.

B. Prepare smooth, solid substrates for plaster according to ASTM C 926.

3.3 INSTALLING METAL LATH

A. Metal Lath: Install according to ASTM C 1063.

1. Partition Framing and Vertical Furring: Install flat-diamond-mesh lath.

2. Flat-Ceiling and Horizontal Framing: Install flat-diamond-mesh lath.

3. On Solid Surfaces, Not Otherwise Furred: Install self-furring, diamond-mesh lath.

3.4 INSTALLING ACCESSORIES

A. Install according to ASTM C 1063 and at locations indicated on Drawings.

B. Reinforcement for External (Outside) Corners:

1. Install cornerbead at exterior locations.

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2. Install cornerbead at interior locations.

3.5 PLASTER APPLICATION

A. General: Comply with ASTM C 926.

1. Do not deviate more than plus or minus 1/4 inch in 10 feet (6 mm in 3 m) from a true

plane in finished plaster surfaces when measured by a 10-foot (3-m) straightedge placed

on surface.

2. Finish plaster flush with metal frames and other built-in metal items or accessories that

act as a plaster ground unless otherwise indicated. Where casing bead does not terminate

plaster at metal frame, cut base coat free from metal frame before plaster sets and groove

finish coat at junctures with metal.

3. Provide plaster surfaces that are ready to receive field-applied finishes indicated.

B. Bonding Compound: Apply on unit masonry] substrates for direct application of plaster.

C. Walls; Base-Coat Mixes for Use over Metal Lath: For scratch and brown coats, for three-coat

plasterwork with 3/4-inch (19-mm) total thickness, as follows:

1. Portland and masonry cement mixes.

D. Ceilings; Base-Coat Mixes for Use over Metal Lath: For scratch and brown coats, for three-coat

plasterwork and having 3/4-inch (19-mm) total thickness for metal lath on concrete, as follows:

1. Portland and masonry cement mixes.

E. Match surface texture of adjacent surfaces unless otherwise indicated.

3.6 PLASTER REPAIRS

A. Repair or replace work to eliminate cracks, dents, blisters, buckles, crazing and check cracking,

dry outs, efflorescence, sweat outs, and similar defects and where bond to substrate has failed.

3.7 CLEANING AND PROTECTION

A. Remove temporary protection and enclosure of other work after plastering is complete.

Promptly remove plaster from door frames, windows, and other surfaces not indicated to be

plastered. Repair floors, walls, and other surfaces stained, marred, or otherwise damaged during

plastering.


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Jefferson Pump Station Improvements 092613 - 1 GYPSUM VENEER

DWM Project No. 13-109 PLASTERING


SECTION 092613

GYPSUM VENEER PLASTERING


PART 1 - GENERAL




1.2 SUMMARY


1. Gypsum veneer plaster and gypsum base for veneer plaster.

2. Gypsum veneer plaster over masonry surfaces.


1. Section 092216 "Non-Structural Metal Framing" for non-load-bearing steel framing.




B. Shop Drawings:

1. Show locations, fabrication, and installation of control joints, reveals, and trim; include

plans, elevations, sections, details of components, and attachments to other work.

C. Samples: For the following products:

1. Trim Accessories: Full-size Sample in 10-inch (250-mm) length for each trim accessory.

2. Textured Finishes: Manufacturer's standard sizefor each textured finish and on rigid

backing.

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1.4 QUALITY ASSURANCE

A. Mockups: Provide a full-thickness finish mockup for each type and finish of gypsum veneer

plaster and substrate to demonstrate aesthetic effects and set quality standards for materials and

execution.

1. Architect will select representative surfaces and conditions for application of each type of

gypsum veneer plaster and substrate.

2. Provide mockups of ceilings and partitions in sizes of at least 10 sq. ft.

3. Apply gypsum veneer plaster, according to requirements for the completed Work, after

permanent lighting and other environmental services have been activated.

4. Subject to compliance with requirements, approved mockups may become part of the

completed Work if undisturbed at time of Substantial Completion.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials in original packages, containers, and bundles bearing brand name and

identification of manufacturer or supplier.

B. Store materials inside under cover and keep them dry and protected against damage from

weather, direct sunlight, surface contamination, corrosion, construction traffic, and other causes.

C. Stack panels flat on leveled supports off floor or slab to prevent sagging.


A. Environmental Limitations: Comply with ASTM C 843 requirements or gypsum veneer plaster

manufacturer's written recommendations, whichever are more stringent.

B. Room Temperatures: Maintain not less than 55 deg F (13 deg C) or more than 80 deg F (27

deg C) for seven days before application of gypsum base and gypsum veneer plaster,

continuously during application, and after application until veneer plaster is dry.

C. Avoid conditions that result in gypsum veneer plaster drying too rapidly.

1. Distribute heat evenly; prevent concentrated or uneven heat on veneer plaster.

2. Maintain relative humidity levels, for prevailing ambient temperature, that produce

normal drying conditions.

3. Ventilate building spaces in a manner that prevents drafts of air from contacting surfaces

during veneer plaster application until it is dry.

D. Do not install panels that are wet, moisture damaged, or mold damaged.

1. Indications that panels are wet or moisture damaged include, but are not limited to,

discoloration, sagging, and irregular shape.

2. Indications that panels are mold damaged include, but are not limited to, fuzzy or

splotchy surface contamination and discoloration.

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PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Source Limitations: Obtain gypsum veneer plaster products, including gypsum base for veneer

plaster, joint reinforcing tape, and embedding material, from single manufacturer.


A. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical

to those tested in assembly indicated according to ASTM E 90 and classified according to


2.3 GYPSUM VENEER PLASTER

A. One-Component Gypsum Veneer Plaster: ASTM C 587, ready-mixed, smooth, finish-coat

veneer plaster formulated for application directly over substrate without use of separate base-

coat material.

1. Georgia Pacific Building Products

2. National Gypsum Company

3. United States Gypsum Company

B. Two-Component Gypsum Veneer Plaster: ASTM C 587, with separate formulations; one for

base-coat application and one for finish-coat application over substrates.

1. Base Coat:

a. National Gypsum Company

b. United States Gypsum Company

2. Smooth Finish Coat:

a. National Gypsum Company

b. United States Gypsum Company

3. Provide job-aggregated components, as standard for manufacturer, to comply with

manufacturer's written recommendations.

2.4 TRIM ACCESSORIES

A. Standard Trim: ASTM C 1047, provided or approved by manufacturer for use in gypsum veneer

plaster applications indicated.

1. Material: rolled zinc.

2. Shapes:

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a. Cornerbead.

b. Bullnose bead.

c. LC-Bead: J-shaped; exposed long flange receives veneer plaster.

d. L-Bead: L-shaped; exposed long flange receives veneer plaster.

e. U-Bead: J-shaped; exposed short flange does not receive veneer plaster.

f. Curved-Edge Cornerbead: With notched or flexible flanges.

g. Control joints.

B. Aluminum Trim: Extruded accessories of profiles and dimensions indicated.

1. Fry Reglet Corporation or equivalent manufacturer.

2. Aluminum: Alloy and temper with not less than the strength and durability properties of

ASTM B 221 (ASTM B 221M), Alloy 6063-T5.

3. Finish: Corrosion-resistant primer compatible with veneer plaster.

2.5 JOINT REINFORCING MATERIALS

A. General: Comply with joint strength requirements in ASTM C 587 and with gypsum veneer

plaster manufacturer's written recommendations for each application indicated.

B. Joint Tape:

1. Gypsum Base for Veneer Plaster: As recommended by gypsum veneer plaster

manufacturer for applications indicated

2. Cementitious Backer Units: As recommended by cementitious backer unit manufacturer.

C. Embedding Material for Joint Tape:

1. Gypsum Base for Veneer Plaster: As recommended by gypsum veneer plaster

manufacturer for use with joint-tape material and gypsum veneer plaster applications

indicated.

2. Cementitious Backer Units: As recommended by cementitious backer unit manufacturer

for applications indicated.


A. General: Provide auxiliary materials that comply with referenced product standards and


B. Bonding Agent: ASTM C 631, polyvinyl acetate.

C. Laminating Adhesive: Adhesive or joint compound recommended by manufacturer for directly

adhering gypsum-base, face-layer panels to backing-layer panels in multilayer construction.

D. Steel Drill Screws: ASTM C 1002 unless otherwise indicated.

1. Use screws complying with ASTM C 954 for fastening panels to steel members from

0.033 to 0.112 inch (0.84 to 2.84 mm) thick.

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E. Sound Attenuation Blankets: ASTM C 665, Type I (blankets without membrane facing),

produced by combining thermosetting resins with mineral fibers manufactured from glass, slag

wool, or rock wool.

1. Fire-Resistance-Rated Assemblies: Comply with mineral-fiber requirements of assembly.

F. Acoustical Joint Sealant: Manufacturer's standard nonsag, paintable, nonstaining latex sealant

complying with ASTM C 843. Product effectively reduces airborne sound transmission through

perimeter joints and openings in building construction, as demonstrated by testing

representative assemblies according to ASTM E 90.

G. Patching Mortar: Dry-pack patching mortar, consisting of 1 part portland cement to 2-1/2 parts

fine aggregate passing a No. 16 (1.18-mm) sieve, using only enough water for handling and

placing.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions, with Installer present, for compliance with

requirements for installation tolerances and other conditions affecting performance of the Work.

B. Examine panels before installation. Reject panels that are wet, moisture damaged, or mold

damaged.

C. Masonry Substrates: Verify that mortar joints are struck flush.

D. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Masonry Substrates: Prepare according to gypsum veneer plaster manufacturer's written

recommendations and as follows:

1. Clean surfaces to remove dirt, grease, oil, and other foreign matter and deposits that

could impair bond with gypsum veneer plaster.

2. Apply bonding agent on dry masonry substrates.

3.3 GYPSUM VENEER PLASTERING

A. Bonding Agent: Apply bonding agent on dry masonry according to gypsum veneer plaster


B. Gypsum Veneer Plaster Mixing: Mechanically mix gypsum veneer plaster materials to comply

with ASTM C 843 and with gypsum veneer plaster manufacturer's written recommendations.

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C. Gypsum Veneer Plaster Application: Comply with ASTM C 843 and with veneer plaster


1. One-Component Gypsum Veneer Plaster: Trowel apply base coat over substrate to

uniform thickness. Fill all voids and imperfections. Immediately double back with same

mixer batch of plaster to a uniform total thickness of 1/16 to 3/32 inch (1.6 to 2.4 mm).

2. Two-Component Gypsum Veneer Plaster:

a. Base Coat: Hand trowel or machine apply base coat over substrate to a uniform

thickness of 1/16 to 3/32 inch (1.6 to 2.4 mm). Fill all voids and imperfections.

b. Finish Coat: Trowel apply finish-coat plaster over base-coat plaster to a uniform

thickness of 1/16 to 3/32 inch (1.6 to 2.4 mm).

3. Where gypsum veneer plaster abuts only metal door frames, windows, and other units,

groove finish coat to eliminate spalling.

4. Do not apply veneer plaster to gypsum base if paper facing has degraded from exposure

to sunlight. Before applying veneer plaster, use remedial methods to restore bonding

capability to degraded paper facing according to manufacturer's written recommendations

and as approved by Architect.

D. Concealed Surfaces: Do not omit gypsum veneer plaster behind cabinets, furniture, furnishings,

and similar removable items. Omit veneer plaster in the following areas where it will be

concealed from view in the completed Work unless otherwise indicated or required to maintain

fire-resistance and STC ratings:

1. Above suspended ceilings.

2. Behind wood paneling.

E. Gypsum Veneer Plaster Finish: Smooth-troweled finish unless otherwise indicated.

3.4 PROTECTION

A. Protect installed gypsum veneer plaster from damage from weather, condensation, construction,

and other causes during remainder of the construction period.

B. Remove and replace gypsum veneer plaster and gypsum base panels that are wet, moisture

damaged, or mold damaged.

1. Indications that gypsum base panels are wet or moisture damaged include, but are not

limited to, discoloration, sagging, and irregular shape.

2. Indications that gypsum base panels are mold damaged include, but are not limited to,

fuzzy or splotchy surface contamination and discoloration.


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Jefferson Pump Station Improvements 092900 - 1 GYPSUM BOARD



SECTION 092900

GYPSUM BOARD

REVISED – ADDENDUM NO. 1

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes:

1. Interior gypsum board

2. Gypsum board soffit panels


1. Section 092216 "Non-Structural Metal Framing" for non-structural framing and

suspension systems that support gypsum board panels.




B. Samples:

1. Trim Accessories: Full-size Sample in 12-inch-long length for each trim accessory

indicated.

1.4 DELIVERY, STORAGE AND HANDLING

A. Store materials inside under cover and keep them dry and protected against weather,

condensation, direct sunlight, construction traffic, and other potential causes of damage. Stack

panels flat and supported on risers on a flat platform to prevent sagging.


A. Environmental Limitations: Comply with ASTM C 840 requirements or gypsum board

manufacturer's written recommendations, whichever are more stringent.

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B. Do not install paper-faced gypsum panels until installation areas are enclosed and conditioned.

C. Do not install panels that are wet, those that are moisture damaged, and those that are mold

damaged.


discoloration, sagging, or irregular shape.



PART 2 - PRODUCTS


A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, provide materials and

construction identical to those tested in assembly indicated according to ASTM E 119 by an

independent testing agency.

B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical

to those tested in assembly indicated according to ASTM E 90 and classified according to


2.2 INTERIOR GYPSUM BOARD

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering

products that may be incorporated into the Work include, but are not limited to, the following:

1. American Gypsum

2. CertainTeed Corp.

3. Georgia-Pacific Gypsum LLC

4. Lafarge North America Inc.

5. National Gypsum Company

6. Temple-Inland

7. USG Corporation

B. Gypsum Wallboard: ASTM C 1396/C 1396M

1. Thickness: 5/8 inch

2. Long Edges: Tapered

C. Gypsum Board, Type X: ASTM C 1396/C 1396M











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D. Flexible Gypsum Board: ASTM C 1396/C 1396M. Manufactured to bend to fit radii and to be

more flexible than standard regular-type gypsum board of same thickness.



E. Gypsum Ceiling Board: ASTM C 1396/C 1396M



F. Moisture and Mold-Resistant Glass-Mat Gypsum Board: ASTM C 1178/C 1178M, with

moisture- and mold-resistant core encased in a moisture-resistant fiberglass mat.

1. Core: 5/8 inch, Type C as required by fire-resistance-rated assembly indicated on

Drawings.


3. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.

4. Comply with ASTM C1658, C1396, C1177 and E136.

5. Manufacturers: Subject to compliance with requirements, available manufacturers

offering products that may be incorporated into the Work include, but are not limited to,

the following:

a. CertainTeed Corp.; GlasRoc Tile Backer

b. Georgia-Pacific Gypsum LLC; DensShield Tile Backer

c. USG Corporation; Sheetrock Brand Glass-Mat Panels Mold Tough

G. Cementitious Backer Units: ANSI A118.9 and ASTM C 1288 or 1325, with manufacturer's

standard edges.

1. Products: Subject to compliance with requirements, provide one of the following:

a. C-Cure; C-Cure Board 990

b. CertainTeed Corp.; BackerBoard

c. Custom Building Products; Wonderboard

d. FinPan, Inc.; Util-A-Crete Concrete Backer Board

e. James Hardie Building Products, Inc.; Hardiebacker

f. National Gypsum Company, Permabase Cement Board

g. USG Corporation; DUROCK Cement Board


3. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.


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2.3 SPECIALTY GYPSUM BOARD

A. Gypsum Board, Type C: ASTM C 1396/C 1396M. Manufactured to have increased fire-

resistive capability.



a. American Gypsum; Firebloc Type C

b. CertainTeed Corp.; ProRoc Type C

c. Georgia-Pacific Gypsum LLC; Fireguard C

d. Lafarge North America Inc.; Firecheck Type C

e. National Gypsum Company; Gold Bond Fire-Shield C

f. USG Corporation; Firecode C Core

2. Thickness: As required by fire-resistance-rated assembly indicated on Drawings.


2.4 EXTERIOR GYPSUM BOARD FOR CEILINGS AND SOFFITS

A. Exterior Gypsum Soffit Board: ASTM C 1396/C 1396M, with manufacturer's standard edges.



a. American Gypsum; Firebloc Type C

b. CertainTeed Corp.; ProRoc Type C

c. Georgia-Pacific Gypsum LLC; Fireguard C

d. Lafarge North America Inc.; Firecheck Type C

e. National Gypsum Company; Gold Bond Fire-Shield C

f. USG Corporation; Firecode C Core

2. Core: As indicated 5/8 inch (15.9 mm), Type X

2.5 TRIM ACCESSORIES

A. Interior Trim: ASTM C 1047

1. Material: Galvanized coated steel sheet

2. Shapes:

a. Cornerbead

b. Bullnose bead

c. LC-Bead: J-shaped; exposed long flange receives joint compound.

d. L-Bead: L-shaped; exposed long flange receives joint compound.

e. Expansion (control) joint.

f. Curved-Edge Cornerbead: With notched or flexible flanges.















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B. Exterior Trim: ASTM C 1047

1. Material: Hot-dip galvanized-steel sheet.

2. Shapes:

a. Cornerbead

b. LC-Bead: J-shaped; exposed long flange receives joint compound.

2.6 JOINT TREATMENT MATERIALS

A. General: Comply with ASTM C 475/C 475M.

B. Joint Tape:

1. Interior Gypsum Board: Paper

2. Exterior Gypsum Soffit Board: Paper

3. Tile Backing Panels: As recommended by panel manufacturer.

C. Joint Compound for Interior Gypsum Board: For each coat use formulation that is compatible

with other compounds applied on previous or for successive coats.

1. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and

trim flanges, use setting-type taping compound.

a. Use setting-type compound for installing paper-faced metal trim accessories.

2. Fill Coat: For second coat, use sandable topping compound.

3. Finish Coat: For third coat, use sandable topping compound.

4. Skim Coat: For final coat of Level 5 finish, use sandable topping compound.

D. Joint Compound for Exterior Applications:

1. Exterior Gypsum Soffit Board: Use setting-type taping compound and setting-type,

sandable topping compound.

E. Backing Panels:

1. Glass-Mat, Water-Resistant Backing Panel: As recommended by backing panel

manufacturer.

2. Cementitious Backer Units: As recommended by backer unit manufacturer.

3. Water-Resistant Gypsum Backing Board: Use setting-type taping compound and setting-

type, sandable topping compound.


A. General: Provide auxiliary materials that comply with referenced installation standards and


B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering

gypsum panels to continuous substrate.

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C. Steel Drill Screws: ASTM C 1002, unless otherwise indicated.

1. Use screws complying with ASTM C 954 for fastening panels to steel members from

0.033 to 0.112 inch thick.

2. For fastening cementitious backer units, use screws of type and size recommended by

panel manufacturer.

D. Sound Attenuation Blankets: ASTM C 665, Type I (blankets without membrane facing)

produced by combining thermosetting resins with mineral fibers manufactured from glass, slag

wool, or rock wool.

1. Fire-Resistance-Rated Assemblies: Comply with mineral-fiber requirements of

assembly.

E. Acoustical Joint Sealant: Manufacturer's standard nonsag, paintable, nonstaining latex sealant

complying with ASTM C 834. Product effectively reduces airborne sound transmission through

perimeter joints and openings in building construction as demonstrated by testing representative

assemblies according to ASTM E 90.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Accumetric LLC; BOSS 824 Acoustical Sound Sealant

b. Grabber Construction Products; Acoustical Sealant GSC

c. Pecora Corporation

d. Specified Technologies, Inc.; Smoke N Sound Acoustical Sealant

e. USG Corporation; SHEETROCK Acoustical Sealant

2. Acoustical joint sealant shall have a VOC content of 250 g/L or less when calculated

according to 40 CFR 59, Subpart D (EPA Method 24).

3. Acoustical joint sealant shall comply with the testing and product requirements of the

California Department of Health Services' "Standard Practice for the Testing of Volatile

Organic Emissions from Various Sources Using Small-Scale Environmental Chambers".

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and substrates including welded hollow-metal frames and framing, with Installer

present, for compliance with requirements and other conditions affecting performance.

B. Examine panels before installation. Reject panels that are wet, moisture damaged, and mold

damaged.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 APPLYING AND FINISHING PANELS, GENERAL

A. Comply with ASTM C 840.

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B. Install ceiling panels across framing to minimize the number of abutting end joints and to avoid

abutting end joints in central area of each ceiling. Stagger abutting end joints of adjacent panels

not less than one framing member.

C. Install panels with face side out. Butt panels together for a light contact at edges and ends with

not more than 1/16 inch of open space between panels. Do not force into place.

D. Locate edge and end joints over supports, except in ceiling applications where intermediate

supports or gypsum board back-blocking is provided behind end joints. Do not place tapered

edges against cut edges or ends. Stagger vertical joints on opposite sides of partitions. Do not

make joints other than control joints at corners of framed openings.

E. Form control and expansion joints with space between edges of adjoining gypsum panels.

F. Cover both faces of support framing with gypsum panels in concealed spaces (above ceilings,

etc.), except in chases braced internally.

1. Unless concealed application is indicated or required for sound, fire, air, or smoke

ratings, coverage may be accomplished with scraps of not less than 8 sq. ft. in area.

2. Fit gypsum panels around ducts, pipes, and conduits.

3. Where partitions intersect structural members projecting below underside of floor/roof

slabs and decks, cut gypsum panels to fit profile formed by structural members; allow

1/4- to 3/8-inch-wide joints to install sealant.

G. Isolate perimeter of gypsum board applied to non-load-bearing partitions at structural

abutments, except floors. Provide 1/4- to 1/2-inch-wide spaces at these locations and trim edges

with edge trim where edges of panels are exposed. Seal joints between edges and abutting

structural surfaces with sealant.

H. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to

open (unsupported) edges of stud flanges first.

I. STC-Rated Assemblies: Seal construction at perimeters, behind control joints, and at openings

and penetrations with a continuous bead of acoustical sealant. Install acoustical sealant at both

faces of partitions at perimeters and through penetrations. Comply with ASTM C 919 and with

manufacturer's written recommendations for locating edge trim and closing off sound-flanking

paths around or through assemblies, including sealing partitions above acoustical ceilings.

J. Install sound attenuation blankets before installing gypsum panels unless blankets are readily

installed after panels have been installed on one side.

3.3 APPLYING INTERIOR GYPSUM BOARD

A. Install interior gypsum board in the following locations:

1. Wallboard Type: As indicated on Drawings.

2. Type X: Where required for fire-resistance-rated assembly.

3. Flexible Type: As indicated on Drawings Apply in double layer at curved assemblies.

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4. Ceiling Type: Ceiling surfaces as indicated on Drawings.

5. Moisture- and Mold-Resistant Type: As indicated on Drawings.

6. Type C: Where required for specific fire-resistance-rated assembly indicated.

7. On ceilings, apply gypsum panels before wall/partition board application to greatest

extent possible and at right angles to framing unless otherwise indicated.

8. On partitions/walls, apply gypsum panels vertically (parallel to framing), or horizontally

(perpendicular to framing) unless otherwise indicated or required by fire-resistance-rated

assembly, and minimize end joints.

a. Stagger abutting end joints not less than one framing member in alternate courses

of panels.

b. At stairwells and other high walls, install panels horizontally unless otherwise

indicated or required by fire-resistance-rated assembly.

9. On Z-furring members, apply gypsum panels vertically (parallel to framing) with no end

joints. Locate edge joints over furring members.

10. Fastening Methods: Apply gypsum panels to supports with steel drill screws.

B. Multilayer Application:

1. On partitions/walls, apply gypsum board indicated for base layers and face layers

vertically (parallel to framing) with joints of base layers located over stud or furring

member and face-layer joints offset at least one stud or furring member with base-layer

joints, unless otherwise indicated or required by fire-resistance-rated assembly. Stagger

joints on opposite sides of partitions.

2. On Z-furring members, apply base layer vertically (parallel to framing) and face layer

either vertically (parallel to framing) or horizontally (perpendicular to framing) with

vertical joints offset at least one furring member. Locate edge joints of base layer over

furring members.

3. Fastening Methods: Fasten base layers with screws; fasten face layers with adhesive and

supplementary screw fasteners.

C. Laminating to Substrate: Where gypsum panels are indicated as directly adhered to a substrate

(other than studs, joists, furring members, or base layer of gypsum board), comply with gypsum

board manufacturer's written recommendations and temporarily brace or fasten gypsum panels

until fastening adhesive has set.

D. Curved Surfaces:

1. Install panels horizontally (perpendicular to supports) and unbroken, to extent possible,

across curved surface plus 12-inch-long straight sections at ends of curves and tangent to

them.

2. For double-layer construction, fasten base layer to studs with screws 16 inches o.c.

Center gypsum board face layer over joints in base layer, and fasten to studs with screws

spaced 12 inches o.c.

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3.4 APPLYING EXTERIOR GYPSUM PANELS FOR CEILINGS AND SOFFITS

A. Apply panels perpendicular to supports, with end joints staggered and located over supports.

1. Install with 1/4-inch open space where panels abut other construction or structural

penetrations.

2. Fasten with corrosion-resistant screws.

3.5 FINISHING GYPSUM BOARD

A. General: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations,

fastener heads, surface defects, and elsewhere as required to prepare gypsum board surfaces for

decoration. Promptly remove residual joint compound from adjacent surfaces.

B. Prefill open joints, rounded or beveled edges, and damaged surface areas.

C. Apply joint tape over gypsum board joints, except for trim products specifically indicated as

not intended to receive tape.

D. Gypsum Board Finish Levels: Finish panels to levels indicated below and according to

ASTM C 840:

1. Level 1: Ceiling plenum areas, concealed areas, and where indicated.

2. Level 5: At panel surfaces that will be exposed to view unless otherwise indicated.

a. Primer and its application to surfaces are specified in Section 099123 "Interior

Painting".

3.6 FINISH PARTICLE BOARD/PLYWOOD CEILING PANEL

A. Ceiling panel shall be cut to size and shop painted; install fixed portion of particle board panels

to light gage metal framing system.

3.7 PROTECTION

A. Protect adjacent surfaces from drywall compound and promptly remove from floors and other

non-drywall surfaces. Repair surfaces stained, marred, or otherwise damaged during drywall

application.

B. Protect installed products from damage from weather, condensation, direct sunlight,

construction, and other causes during remainder of the construction period.

C. Remove and replace panels that are wet, moisture damaged, and mold damaged.


discoloration, sagging, or irregular shape.




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THOMAS JEFFERSONPUMPING STATION

2250 W. EASTWOOD AVE.

DEPARTMENT OFWATER MANAGEMENT

CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

PARTIAL NORTHELEVATION




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

PARTIAL NORTH,SOUTH, & WEST

ELEVATIONS




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

WEST ELEVATION




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

EAST ELEVATION 1




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

EAST ELEVATION 2




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

CORNICE REPAIRS




CITY OF CHICAGO

IMPROVEMENTS

CHICAGO, IL 60625

UTILITY DETAILS