CDC VOL 3 of 4 P974 Specifications 29 Sep 21.pdf

Request for Proposal

W912ER22R0008

Specifications for

P974 Electrical Upgrade Naval Support Activity (NSA), Bahrain

Volume 3 of 4 Divisions 09 - 26

US Army Corps of Engineers

Middle East District

THIS PAGE INTENTIONALLY LEFT BLANK

Request for Proposal

W912ER21R0002

Specification Stamp Page for

P974 Electrical Upgrade

Naval Support Activity (NSA), Bahrain

US Army Corps of Engineers

Middle East District

P-974 - Bahrain Electrical Upgrades 474977

PROJECT TABLE OF CONTENTS

DI VI SI ON 01 - GENERAL REQUI REMENTS

01 11 00 08/15 SUMMARY OF WORK

01 14 00 11/11 WORK RESTRICTIONS

01 15 00.12 10 10/15 SUPPLEMENTARY REQUIREMENTS

01 30 00 08/15 ADMINISTRATIVE REQUIREMENTS

01 32 17.12 10 MED 2/2017 COST-LOADED NETWORK ANALYSIS SCHEDULES

(NAS)

01 33 00 05/11 SUBMITTAL PROCEDURES

01 35 26 11/15 (13 July 2020 M GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 11/14 SOURCES FOR REFERENCE PUBLICATIONS

01 42 15 02/14 METRIC MEASUREMENTS

01 45 00.00 10 11/16 QUALITY CONTROL

01 45 00.15 10 11/16 RESIDENT MANAGEMENT SYSTEM CONTRACTOR

MODE (RMS CM)

01 50 00 08/09 TEMPORARY CONSTRUCTION FACILITIES AND

CONTROLS

01 57 19.12 10 12/18 TEMPORARY ENVIRONMENTAL CONTROLS

01 58 00 08/19 PROJECT IDENTIFICATION

01 74 19 01/07 CONSTRUCTION AND DEMOLITION WASTE

MANAGEMENT

01 78 00 08/11 CLOSEOUT SUBMITTALS

01 78 23 08/15 OPERATION AND MAINTENANCE DATA

01 78 24.00 20 02/15 FACILITY ELECTRONIC OPERATION AND

MAINTENANCE SUPPORT INFORMATION (eOMSI)

01 91 00.15 02/19 TOTAL BUILDING COMMISSIONING

DI VI SI ON 02 - EXI STI NG CONDI TI ONS

02 41 00 05/10 DEMOLITION

02 84 16 04/06 HANDLING OF LIGHTING BALLASTS AND

LAMPS CONTAINING PCBs AND MERCURY

DI VI SI ON 03 - CONCRETE

03 30 00 02/19 CAST-IN-PLACE CONCRETE

03 42 13.00 10 05/16 PLANT-PRECAST CONCRETE PRODUCTS FOR

BELOW GRADE CONSTRUCTION

DI VI SI ON 04 - MASONRY

04 20 00 11/15 UNIT MASONRY

DI VI SI ON 05 - METALS

05 12 00 08/18 STRUCTURAL STEEL

05 50 13 05/17 MISCELLANEOUS METAL FABRICATIONS

05 51 00 02/17 METAL STAIRS

05 51 33 02/16 METAL LADDERS

05 52 00 02/18 METAL RAILINGS

DI VI SI ON 06 - WOOD, PLASTI CS, AND COMPOSI TES

06 10 00 08/16 ROUGH CARPENTRY

06 73 01 05/18 FIBERGLASS REINFORCED PLASTIC (FRP)

GRATING

PROJECT TABLE OF CONTENTS Page 1

DI VI SI ON 07 - THERMAL AND MOI STURE PROTECTI ON

07 05 23 05/14 PRESSURE TESTING AN AIR BARRIER SYSTEM

FOR AIR TIGHTNESS

07 11 13 08/11 BITUMINOUS DAMPPROOFING

07 13 53 02/16 ELASTOMERIC SHEET WATERPROOFING

07 14 00 02/12 FLUID-APPLIED WATERPROOFING

07 19 00 05/11 WATER REPELLENTS

07 21 13 02/16 BOARD AND BLOCK INSULATION

07 21 16 11/11 MINERAL FIBER BLANKET INSULATION

07 21 23 05/11 LOOSE FILL THERMAL INSULATION

07 22 00 02/16 ROOF AND DECK INSULATION

07 27 10.00 10 05/14 BUILDING AIR BARRIER SYSTEM

07 27 19.01 05/17 SELF-ADHERING AIR BARRIERS

07 27 26 05/17 FLUID-APPLIED MEMBRANE AIR BARRIERS

07 27 36 05/17 SPRAY FOAM AIR BARRIERS

07 54 19 02/13 POLYVINYL-CHLORIDE ROOFING

07 60 00 05/17 FLASHING AND SHEET METAL

07 84 00 05/10 FIRESTOPPING

07 92 00 08/16 JOINT SEALANTS

DI VI SI ON 08 - OPENI NGS

08 11 13 02/10 STEEL DOORS AND FRAMES

08 51 23 08/11 STEEL WINDOWS

08 71 00 02/16 DOOR HARDWARE

08 81 00 05/19 GLAZING

08 91 00 05/11 METAL WALL LOUVERS

DI VI SI ON 09 - FI NI SHES

09 22 00 02/10 SUPPORTS FOR PLASTER AND GYPSUM BOARD

09 22 36 01/08 LATH

09 24 23 08/17 CEMENT STUCCO

09 29 00 08/16 GYPSUM BOARD

09 65 30 01/20 RESILIENT WALL BASE AND ACCESSORIES

09 67 23 01/20 RESINOUS FLOORING

09 67 23.15 08/10 FUEL RESISTIVE RESINOUS FLOORING,

3-COAT SYSTEM

09 90 00 05/11 PAINTS AND COATINGS

09 96 00 11/14 HIGH-PERFORMANCE COATINGS

09 97 13.00 40 11/14 STEEL COATINGS

09 97 13.27 10/16 EXTERIOR COATING OF STEEL STRUCTURES

DI VI SI ON 10 - SPECI ALTI ES

10 14 00.10 08/17 EXTERIOR SIGNAGE

10 14 00.20 08/17 INTERIOR SIGNAGE

10 26 00 08/17 WALL AND DOOR PROTECTION

10 44 16 05/15 FIRE EXTINGUISHERS

DI VI SI ON 13 - SPECI AL CONSTRUCTI ON

13 48 00 05/18 SEISMIC BRACING FOR MISCELLANEOUS

EQUIPMENT

DI VI SI ON 22 - PLUMBI NG

22 00 00 11/15 PLUMBING, GENERAL PURPOSE

PROJECT TABLE OF CONTENTS Page 2

22 05 48.00 20 04/06 MECHANICAL SOUND, VIBRATION, AND

SEISMIC CONTROL

DI VI SI ON 23 - HEATI NG, VENTI LATI NG, AND AI R CONDI TI ONI NG ( HVAC)

23 00 00 08/18 AIR SUPPLY, DISTRIBUTION, VENTILATION,

AND EXHAUST SYSTEMS

23 03 00.00 20 08/10 BASIC MECHANICAL MATERIALS AND METHODS

23 05 48.19 05/18 SEISMIC BRACING FOR HVAC

23 05 93 11/15 TESTING, ADJUSTING, AND BALANCING FOR

HVAC

23 07 00 02/13 THERMAL INSULATION FOR MECHANICAL

SYSTEMS

23 09 00 02/19 INSTRUMENTATION AND CONTROL FOR HVAC

23 09 13 11/15 INSTRUMENTATION AND CONTROL DEVICES

FOR HVAC

23 09 23.01 02/19 LONWORKS DIRECT DIGITAL CONTROL FOR

HVAC AND OTHER BUILDING CONTROL SYSTEMS

23 35 19.00 20 02/10 INDUSTRIAL VENTILATION AND EXHAUST

23 64 26 08/09 CHILLED WATER PIPING SYSTEMS

23 81 00 05/18 DECENTRALIZED UNITARY HVAC EQUIPMENT

DI VI SI ON 25 - I NTEGRATED AUTOMATI ON

25 05 11.21 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS FIRE, LIFE, SAFETY

25 05 11.23 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS UTILITY MONITORING

CONTROL SYSTEM (UMCS) TO INCLUDE HVAC

25 05 11.26 11/17 CYBERSECURITY FOR FACILITY-RELATED

CONTROL SYSTEMS UTILITY CONTROL

SYSTEMS AUTOMATIC TRANSFER SWITCH,

GENERATOR CONTROL PANEL, FUEL CONTROL

SYSTEMS AND UNITERRUPTIBLE POWER

SUPPLY (UPS)

25 08 10 04/06 UTILITY MONITORING AND CONTROL SYSTEM

TESTING

DI VI SI ON 26 - ELECTRI CAL

26 00 00.00 20 07/06 BASIC ELECTRICAL MATERIALS AND METHODS

26 05 48.00 10 10/07 SEISMIC PROTECTION FOR ELECTRICAL

EQUIPMENT

26 08 00 08/08 APPARATUS INSPECTION AND TESTING

26 11 16 02/10 SECONDARY UNIT SUBSTATIONS

26 13 00 11/14 SF6/HIGH-FIREPOINT FLUIDS INSULATED

PAD-MOUNTED SWITCHGEAR

26 20 00 02/14 INTERIOR DISTRIBUTION SYSTEM

26 23 00 05/15 LOW-VOLTAGE SWITCHGEAR

26 24 13 05/15 SWITCHBOARDS

26 27 14.00 20 02/11 ELECTRICITY METERING

26 28 01.00 10 10/07 COORDINATED POWER SYSTEM PROTECTION

26 29 23 04/06 VARIABLE FREQUENCY DRIVE SYSTEMS UNDER

600 VOLTS

26 32 15.00 10 10/07 DIESEL-GENERATOR SET STATIONARY

100-2500 KW, WITH AUXILIARIES

26 32 16 01/20 PARALLELING CONTROL SYSTEMS

26 33 53 05/19 STATIC UNINTERRUPTIBLE POWER SUPPLY

(UPS)

PROJECT TABLE OF CONTENTS Page 3

26 41 00 11/13 LIGHTNING PROTECTION SYSTEM

26 51 00 05/16 INTERIOR LIGHTING

26 56 00 05/13 EXTERIOR LIGHTING

DI VI SI ON 27 - COMMUNI CATI ONS

27 10 00 08/11 BUILDING TELECOMMUNICATIONS CABLING

SYSTEM

DI VI SI ON 28 - ELECTRONI C SAFETY AND SECURI TY

28 08 10 05/16 ELECTRONIC SECURITY SYSTEM ACCEPTANCE

TESTING

28 10 05 05/16 ELECTRONIC SECURITY SYSTEMS (ESS)

28 31 63.00 20 10/07 ANALOG/ADDRESSABLE INTERIOR FIRE ALARM

SYSTEM

DI VI SI ON 31 - EARTHWORK

31 00 00 08/08 EARTHWORK

DI VI SI ON 32 - EXTERI OR I MPROVEMENTS

32 11 23 08/17 AGGREGATE BASE COURSES

32 16 15 04/08 CONCRETE BLOCK PAVEMENTS

32 16 19 05/18 CONCRETE CURBS, GUTTERS AND SIDEWALKS

32 17 23 08/16 PAVEMENT MARKINGS

32 31 13.53 04/08 HIGH-SECURITY CHAIN LINK FENCES AND

GATES

DI VI SI ON 33 - UTI LI TI ES

33 08 55 07/07 COMMISSIONING OF FUEL FACILITY SYSTEMS

33 09 52 11/18 FUEL PUMP CONTROL AND ANNUNCIATION

SYSTEM (NON-HYDRANT)

33 11 00 02/18 WATER UTILITY DISTRIBUTION PIPING

33 40 00 02/10 STORM DRAINAGE UTILITIES

33 52 23.15 11/18 POL SERVICE PIPING WELDING

33 52 40 11/18 FUEL SYSTEMS PIPING (NON-HYDRANT)

33 56 10 05/19 FACTORY-FABRICATED FUEL STORAGE TANKS

33 57 55 11/18 FUEL SYSTEM COMPONENTS (NON-HYDRANT)

33 71 02 02/15 UNDERGROUND ELECTRICAL DISTRIBUTION

33 82 00 04/06 TELECOMMUNICATIONS OUTSIDE PLANT (OSP)

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 4

SECTION 09 22 00

SUPPORTS FOR PLASTER AND GYPSUM BOARD

02/10

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 341 (2010) Seismic Provisions for Structural Steel Buildings

ASTM INTERNATIONAL (ASTM)

ASTM A463/A463M (2010; R 2015) Standard Specification for Steel Sheet, Aluminum-Coated, by the Hot-Dip Process

ASTM A653/A653M (2018) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM C645 (2014; E 2015) Nonstructural Steel Framing Members

ASTM C754 (2018) Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products

ASTM C841 (2003; R 2013) Installation of Interior Lathing and Furring

ASTM C847 (2014a) Standard Specification for Metal Lath

NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)

NAAMM EMLA 920 (2009) Guide Specifications for Metal Lathing and Furring

UNDERWRITERS LABORATORIES (UL)

UL Fire Resistance (2014) Fire Resistance Directory

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following

SECTION 09 22 00 Page 1 in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Metal Support Systems; G M

Submit for the erection of metal framing and furring. Indicate materials, sizes, thicknesses, and fastenings.

SD-03 Product Data

Metal Support Systems

Recycled Content for Metal Support Systems

1.3 DELIVERY, STORAGE, AND HANDLING

Deliver materials to the job site and store in ventilated dry locations permitting easy access for inspection and handling. If materials are stored outdoors, stack materials off the ground, supported on a level platform, and fully protected from the weather. Handle materials carefully to prevent damage. Remove damaged items and provide new items.

PART 2 PRODUCTS

2.1 MATERIALS

Provide steel materials for metal support systems with galvanized coating ASTM A653/A653M , Z180; aluminum coating ASTM A463/A463M , T1-75; or a 55-percent aluminum-zinc coating. Provide support systems and attachments per AISC 341 UFC 3-310-04, "Seismic Design for Buildings" in seismic zones.

Provide metal support systems containing a minimum of 20 percent recycled content. Provide data identifying percentage of recycled content for metal support systems.

2.1.1 Materials for Attachment of Lath

2.1.1.1 Suspended and Furred Ceiling Systems and Wall Furring

ASTM C841, and ASTM C847.

2.1.1.2 Non-loadbearing Wall Framing

NAAMM EMLA 920.

2.1.2 Materials for Attachment of Gypsum Wallboard

2.1.2.1 Suspended and Furred Ceiling Systems

ASTM C645.

2.1.2.2 Nonload-Bearing Wall Framing and Furring

ASTM C645, but not thinner than 0.45 mm thickness, with 0.85 mm minimum thickness supporting wall hung items such as cabinetwork, equipment and fixtures.

SECTION 09 22 00 Page 2

2.1.2.3 Furring Structural Steel Columns

ASTM C645. Steel (furring) clips and support angles listed in UL Fire Resistance may be provided in lieu of steel studs for erection of gypsum wallboard around structural steel columns.

2.1.2.4 Z-Furring Channels with Wall Insulation

Not lighter than 0.5 mm thick galvanized steel, Z-shaped, with 32 mm and 19 mm flanges and depth as required by the insulation thickness provided.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Systems for Attachment of Lath

3.1.1.1 Suspended and Furred Ceiling Systems and Wall Furring

ASTM C841, except as indicated otherwise.

3.1.1.2 Non-loadbearing Wall Framing

NAAMM EMLA 920, except provide framing members 400 mm o.c. unless indicated otherwise.

3.1.2 Systems for Attachment of Gypsum Wallboard

3.1.2.1 Suspended and Furred Ceiling Systems

ASTM C754, except provide framing members 400 mm o.c. unless indicated otherwise.

3.1.2.2 Non-loadbearing Wall Framing and Furring

ASTM C754, except as indicated otherwise.

3.1.2.3 Furring Structural Steel Columns

Install studs or galvanized steel clips and support angles for erection of gypsum wallboard around structural steel columns in accordance with the UL Fire Resistance , design number(s) of the fire resistance rating indicated.

3.1.2.4 Z-Furring Channels with Wall Insulation

Install Z-furring channels vertically spaced not more than 600 mm o.c.

Locate Z-furring channels at interior and exterior corners in accordance with manufacturer's printed erection instructions. Fasten furring channels to masonry and concrete walls with powder-driven fasteners or hardened concrete steel nails through narrow flange of channel. Space fasteners not more than 600 mm o.c.

3.2 ERECTION TOLERANCES

Provide framing members which will be covered by finish materials such as wallboard, plaster, or ceramic tile set in a mortar setting bed, within the following limits:

SECTION 09 22 00 Page 3

a. Layout of walls and partitions: 6 mm from intended position;

b. Plates and runners: 5 mm in 1.9 meters from a straight line;

c. Studs: 5 mm in 1.9 meters out of plumb, not cumulative; and

d. Face of framing members: 5 mm in 1.9 meters from a true plane.

Provide framing members which will be covered by ceramic tile set in dry-set mortar, latex-portland cement mortar, or organic adhesive within the following limits:

a. Layout of walls and partitions: 6 mm from intended position;

b. Plates and runners: 5 mm in 3.8 meters from a straight line;

c. Studs: 5 mm in 3.8 meters out of plumb, not cumulative; and

d. Face of framing members: 5 mm in 3.8 meters from a true plane.

-- End of Section --

SECTION 09 22 00 Page 4

SECTION 09 22 36

LATH

01/08

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A1008/A1008M (2016) Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable

ASTM A489 (2018; E 2018) Standard Specification for Carbon Steel Eyebolts

ASTM A580/A580M (2018) Standard Specification for Stainless Steel Wire

ASTM A641/A641M (2009a; R 2014) Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire

ASTM A653/A653M (2018) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM B633 (2015) Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

ASTM C1063 (2019) Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster

ASTM C636/C636M (2013) Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels

ASTM C841 (2003; R 2013) Installation of Interior Lathing and Furring

GYPSUM ASSOCIATION (GA)

GA 600 (2009) Fire Resistance Design Manual

UNDERWRITERS LABORATORIES (UL)

UL Fire Resistance (2014) Fire Resistance Directory

SECTION 09 22 36 Page 1

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Lath

Recycled Content for Metal Lath

Accessories

1.3 DELIVERY AND STORAGE

Deliver materials in the manufacturer's original unbroken packages or containers that are labeled plainly with the manufacturer's names and brands. Store materials in dry locations with adequate ventilation, free from water, and in such a manner to permit easy access for inspection and handling.

PART 2 PRODUCTS

2.1 LATH

Provide metal lath containing a minimum of 20 percent recycled content.

Provide data identifying percentage of recycled content for metal lath.

2.1.1 Metal Plastering Base (Lath)

Provide the type(s) and weight(s) required for the type and spacing of supports shown for the kind of plaster indicated and specified. Do not use rib lath for ceramic tile scratch coat.

2.1.1.1 For Portland Cement-Based Plaster (Stucco)

ASTM C1063, diamond mesh, self-furring diamond mesh, flat rib, 10 mm rib, 20 mm rib, sheet, welded wire, or woven wire metal lath weighing not less than 1.85 kilograms per square meter.

2.1.1.2 Paper Backing (Waterproofed Kraft Building Paper)

Provide metal plastering base with paper backing, "Moderate water-vapor Resistant" for exterior plastering work.

2.1.1.3 Galvanized Metal Plastering Base

Provide for exterior plastering work.

2.1.2 Accessories

ASTM C1063. ASTM C841. Provide only galvanized steel, rigid poly (vinyl chloride) (PVC) plastic, clear plastic coated aluminum accessories.

SECTION 09 22 36 Page 2

2.2 HANGERS

Provide hangers and attachment capable of supporting a minimum 1330 N ultimate vertical load without failure of supporting material or attachment.

2.2.1 Wires

Conform wires to ASTM A641/A641M , Class 1, 2.0 mm in diameter.

ASTM A580/A580M , composition 302 or 304, condition annealed stainless steel, 2.0 mm in diameter.

2.2.2 Straps

Provide straps of 25 by 5 mm galvanized steel conforming to ASTM A653/A653M , with a light commercial zinc coating or ASTM A1008/A1008M with an electrodeposited zinc coating conforming to ASTM B633, Type RS.

2.2.3 Rods

Provide 5 mm diameter threaded steel rods, zinc or cadmium coated.

2.2.4 Eyebolts

Provide eyebolts of weldless, forged-carbon-steel, with a straight-shank in accordance with ASTM A489. Eyebolt size must be a minimum 7 mm, zinc coated or cadmium plated.

2.2.5 Masonry Anchorage Devices

Comply with ASTM C636/C636M for anchorage devices for eyebolts and machine screws.

PART 3 EXECUTION

3.1 INSPECTION

Verify that framing, furring and accessories are securely attached and of proper sizes and spacing necessary to provide a suitable substrate to receive lath. Do not proceed with work until framing, furring and accessories are acceptable to the Contracting Officer for application of lath.

3.2 INSTALLATION

3.2.1 Lathing Materials and Accessories

Install in accordance with ASTM C1063 for portland cement-based plaster work, except where indicated or specified otherwise herein.

3.2.1.1 Metal Plastering Base

Install where indicated to receive scratch coat for ceramic tile or terrazzo work on concrete and masonry surfaces to receive plaster.

3.2.1.2 Metal Plaster Base with Paper Backing

Where used, lap joints to provide backing on backing and metal-on-metal.

Lap backing not less than 25 mm. Lap backing so that water will flow to the exterior.

SECTION 09 22 36 Page 3

3.2.1.3 Control (Expansion and Contraction) Joints

a. For portland cement-based plaster (ceilings and walls), install to create panels no larger than 9.3 square meters with no dimension exceeding 3.0 m.

b. For unrestrained gypsum plaster ceilings install to create panels no larger than 232 square meters with no dimension exceeding 15.2 m. For gypsum plaster walls, partitions and ceilings without perimeter relief install not more than 9.1 m on centers in either direction.

c. Install where indicated, where expansion joints occur in the structural walls and ceilings and where ceiling framing or furring changes direction. Terminate lath at each side of joint and fasten joints securely to lath.

3.2.1.4 Plastering Beads

Install edge trim (casing bead) at the edges of plaster which abuts or adjoins an unplastered surface, on each surface at the internal angle formed by load bearing and non-load bearing walls and partitions abutting structural walls, columns, or floor-ceiling slabs, between concrete or terrazzo bases and the plaster above them, on each side of the joint between walls or partitions constructed of dissimilar materials which require plastering, and between plasters of a different composition. Fill voids formed in corners with sealant. Install corner beads at all vertical external corners of plaster walls.

3.2.2 Fire-Resistant Assemblies

Wherever fire-resistant construction is indicated, provide all materials and application methods, including types and spacing of fasteners, in accordance with the specifications contained in the UL Fire Resistance for the Design Number(s) indicated or GA 600 for the File Number(s) indicated.

SECTION 09 22 36 Page 4

SECTION 09 24 23

CEMENT STUCCO

08/17

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A1008/A1008M (2016) Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable

ASTM A1064/A1064M (2017) Standard Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete

ASTM A489 (2018; E 2018) Standard Specification for Carbon Steel Eyebolts

ASTM A580/A580M (2018) Standard Specification for Stainless Steel Wire

ASTM A641/A641M (2009a; R 2014) Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire

ASTM A653/A653M (2018) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM B633 (2015) Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

ASTM C1032 (2014) Standard Specification for Woven Wire Plaster Base

ASTM C1063 (2019) Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster

ASTM C150/C150M (2018) Standard Specification for Portland Cement

ASTM C206 (2014) Standard Specification for Finishing Hydrated Lime

SECTION 09 24 23 Page 1

ASTM C636/C636M (2013) Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels

ASTM C841 (2003; R 2013) Installation of Interior Lathing and Furring

ASTM C847 (2014a) Standard Specification for Metal Lath

ASTM C897 (2015) Aggregate for Job-Mixed Portland Cement-Based Plasters

ASTM C926 (2018b) Standard Specification for Application of Portland Cement-Based Plaster

ASTM C933 (2014) Welded Wire Lath

ASTM D1784 (2011) Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Lath; G M

SD-03 Product Data

Proportions and Mixing

Recycled Content for steel framing; S Recycled Content for metal lath; S SD-04 Samples

Colored Stucco Finish Coat; G R

Sample Panel; G R

1.3 QUALITY ASSURANCE

Submit a SAMPLE PANEL as follows: One 300 mm square stucco panel showing finish texture and color and exposed reinforcement at the edges, one 300 mm square of reinforcement, and a 300 mm length of each accessory proposed, prior to proceeding with stucco work.

1.4 DELIVERY, STORAGE, AND HANDLING

Deliver packaged materials to the site in the original packages and containers with labels intact and seals unbroken. Keep cementitious

SECTION 09 24 23 Page 2 materials dry and stored off the ground, under cover and away from damp surfaces until ready to be used. Aggregate must be covered to prevent the absorption or loss of moisture.

1.5 ENVIRONMENTAL REQUIREMENTS

Do not apply stucco when the ambient temperature is 4 degrees C or lower, or when a drop in temperature below 4 degrees C is expected within 48 hours after application.

PART 2 PRODUCTS

2.1 PORTLAND CEMENT

Portland cement must conform to ASTM C150/C150M, white Portland cement, Type I.

2.2 COLORED STUCCO FINISH COAT

Colored stucco finish coat must be a mill mixed product using white Portland cement and requiring only the addition of and mixing with water for application. Color must be as indicated on Drawings. Submit samples including both a fabricated portion of unit of work and color samples.

2.3 LIME

Lime must conform to ASTM C206, Type S.

2.4 SAND

Sand aggregate for job-mixed base coat and job-mixed finish coat stucco must conform to ASTM C897.

2.5 ACCESSORIES

Accessories must be roll formed galvanized steel, or rigid polyvinyl chloride (PVC), except that cornerite and striplath must be formed from steel sheets with manufacturer's standard galvanized coating. Vinyl members must be in accordance with ASTM D1784. Welded wire corner reinforcements must be zinc coated, galvanized 1.4 mm steel wire conforming to ASTM A1064/A1064M . Furring must include hangers, bolts, inserts, clips, fastenings, and attachments of number, size, and design to develop the full strength of the members.

2.6 STEEL FRAMING

Steel framing must be as shown and must be manufacturer's standard products with shop applied protective coating. Refer to Section 09 22 00

SUPPORTS FOR PLASTER AND GYPSUM BOARD.

Provide steel framing containing a minimum of 20 percent recycled content, as calculated by the sum of the percentage of post-consumer and ½ the percentage of pre-consumer recycled steel content. Provide data identifying percentage of recycled content for steel framing.

2.7 METAL LATH

Metal lath must conform to ASTM C847, types and weights in accordance with the various spacing shown in ASTM C841. Lath for vertical application on

SECTION 09 24 23 Page 3 steel and wood framing supports must be expanded metal or welded or woven wire and must have paper backing with a minimum vapor permeance of 287.2 ng per Pa per second per square meter. Woven wire lath must be a maximum 38 x 38 mm mesh wire of not less than 1.37 mm nominal diameter and must conform to ASTM C1032. Welded wire lath must conform to ASTM C933, with openings not to exceed 50 x 50 mm. Expanded metal or wire lath must be fabricated in a manner to provide not less than 6 mm keying between wire and paper backing and keying must be obtained by a uniform series of slots in a perforated face paper woven between the wires.

Provide Metal Lath containing a minimum of 20 percent recycled content, as calculated by the sum of the percentage of post-consumer and ½ the percentage of pre-consumer recycled steel content. Provide data identifying percentage of recycled content for metal lath.

2.8 WATER

Provide clean, fresh, potable water, free from amounts of oils, acids, alkalis and organic matter that would be injurious to the stucco.

2.9 HANGERS

Provide hangers and attachment capable of supporting a minimum 1330 N ultimate vertical load without failure of supporting material or attachment.

2.9.1 Wires

Conform wires to ASTM A641/A641M , Class 1, 2.0 mm in diameter.

ASTM A580/A580M , composition 302 or 304, condition annealed stainless steel, 2.0 mm in diameter.

2.9.2 Straps

Provide straps of 25 by 5 mm galvanized steel conforming to ASTM A653/A653M , with a light commercial zinc coating or ASTM A1008/A1008M with an electrodeposited zinc coating conforming to ASTM B633, Type RS.

2.9.3 Rods

Provide 5 mm diameter threaded steel rods, zinc or cadmium coated.

2.9.4 Eyebolts

Provide eyebolts of weldless, forged-carbon-steel, with a straight-shank in accordance with ASTM A489. Eyebolt size must be a minimum 7 mm, zinc coated or cadmium plated.

2.9.5 Masonry Anchorage Devices

Comply with ASTM C636/C636M for anchorage devices for eyebolts, machine screws.

PART 3 EXECUTION

3.1 INSTALLATION

Do not install building construction materials that show visual evidence of biological growth.

SECTION 09 24 23 Page 4

3.2 FRAMING

Framing must be installed as indicated.

3.3 CONTROL JOINTS

Locate control joints as indicated on the drawings. Install prefabricated control joint members prior to the application of the stucco. Clear control joints of all stucco within the control area after stucco application and prior to final stucco set.

3.4 LATH

Install lath in accordance with ASTM C841 or ASTM C1063 except as otherwise specified. Metal and wire lath must be applied straight, without buckles and with joints staggered. End laps of metal lath must be not less than 25 mm. When paper-backed lath is used, the paper must be split from the lath at all lap areas to provide a paper to paper and lath to lath lap. Horizontal joints must be shiplapped. Lath must be interrupted at all control joints. Submit drawings showing details of construction for reinforcement, furring, and grounds; including manufacturer's installation instructions for stucco materials, and locations where each mix and coating thickness will be used.

3.4.1 Steel and Wood Supports

Apply metal lath over vertical open or solid wood and steel backing frame construction only after sheathing and air barrier has been applied to the area to receive the stucco. Fasten lath every 200 mm vertically and every 400 mm horizontally; and where sheets of lath are lapped. Drive fasteners to hold both lapped edges securely in place.

3.4.2 On Concrete and Masonry

Fasten lath every 200 mm vertically and every 400 mm horizontally. Where wood supports adjoin masonry or concrete in the same direction, provide casing bead, control joints, or reinforcement as indicated.

3.4.3 Over Metal Lintels and Flashings

Lath over metal lintels must be extended vertically over the angles to a height of not less than 150 mm and horizontally across the underside of the lintels and must be secured in an approved manner. Lath over metal flashings must lap the flashings not less than 50 mm and must be extended vertically for a height of not less than 150 mm.

3.4.4 Special Shapes, Profiles, and Contours

Special shapes, profiles, and contours must be formed with wood, metal or aluminum furring and reinforcing.

3.5 FURRING

Furring must be installed to true lines and surfaces and must be rigidly supported and secured in place.

SECTION 09 24 23 Page 5

3.6 PREPARATION OF SURFACES

Preparation of surfaces for application of stucco to solid bases such as stone, masonry or concrete must conform to the applicable requirements of

ASTM C926.

3.7 PROPORTIONS AND MIXING

Proportions and mixing for job-mixed base coat and finish coat must conform to the applicable requirements of ASTM C926. Mixing of mill-mixed finish coat must be in accordance with the manufacturer's directions.

Submit detailed description of the proposed job-mix proportions for base and finish coats; including identification of thickness of coats.

3.8 STUCCO APPLICATION

Stucco must be applied in three coats to a thickness of not less than 25 mm as measured from the back plane of metal reinforcement, exclusive of ribs or dimples or from the face of solid backing or support, with or without metal reinforcement, to the finished stucco surface, including moderate texture variations. Stucco application must conform to the applicable requirements of ASTM C926 and the following:

3.8.1 Workmanship

Items or features of the work in connection with or adjoining the stucco must be in place, plumb, straight, and true prior to beginning the stucco work. Metal and wire lath, where required, must be in place and positioned to provide a good key at back of lath. Where lath is applied over copper, the copper must be given a heavy coat of bituminous paint.

Masonry surfaces to receive stucco must be evenly dampened immediately prior to application of stucco. Each stucco coat must be applied continuously in one general direction, without allowing mortar to dry at edges. Where it is impossible to work the full dimension of a wall surface in a continuous operation, jointing must be made at a break, opening, or other natural division of the surface. Edges to be joined must be dampened slightly to produce a smooth confluence. Exterior corners of stucco must be slightly rounded. Stucco on soffit surfaces must be pitched forward to form a drip.

3.8.2 Scratch Coat

Apply scratch coat not less than 10 mm thick under sufficient pressure to form good keys and to completely embed the reinforcement. Before the scratch coat has set, it must be lightly scratched in one direction and vertical surfaces must be scratched in the horizontal direction only. The scratch coat must be fog cured for a minimum of 72 hours.

3.8.3 Brown Coat

Evenly dampen the scratch coat to obtain uniform suction before the brown coat is applied. There must be no visible water on the surface when the brown coat is applied. The brown coat must be applied to the scratch coat with sufficient pressure to force the stucco into the scratches and must be brought to a plumb, true, even plane with rod or straightedge. When set sufficiently, the brown coat must be uniformly floated with a dry float to promote densification of the coat and to provide a surface receptive to bonding of the finish coat. Brown coat must be fog cured for a minimum of 72 hours.

SECTION 09 24 23 Page 6

3.8.4 Finish Coat

Dampen surfaces of the brown coat not more than 1 hour before the finish coat is to be applied to a uniform wetness with no free-standing water on the surface. The finish coat must have a smooth trowel finish and must conform to the approved sample. Fog cure the finish coat for a minimum of 48 hours. Take care to prevent staining.

3.8.5 Surface Tolerance

When a 3 m straightedge is placed at any location on the finished surface of the stucco, excluding rough-textured finish, the surface must not vary more than 3 mm from the straightedge.

3.9 CURING AND PROTECTION

Perform fog curing by applying a fine mist of water to the stucco.

Exercise care during fog curing to avoid erosion damage of the stucco surfaces. Do not use a solid stream of water. Fog not less than three times daily. Protect the stucco from the direct rays of the sun during severe drying conditions using canvas, cloth or other approved sheet material.

3.10 PATCHING AND POINTING

Replace or patch loose, cracked, damaged or defective work as directed.

Patching must match existing work in texture and color and must be finished flush.

SECTION 09 24 23 Page 7

SECTION 09 24 23 Page 8

SECTION 09 29 00

GYPSUM BOARD

08/16

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C1002 (2018) Standard Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs

ASTM C1047 (2014a) Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base

ASTM C1396/C1396M (2017) Standard Specification for Gypsum Board

ASTM C1629/C1629M (2018a) Standard Classification for Abuse-Resistant Nondecorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels

ASTM C475/C475M (2017) Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board

ASTM C840 (2018b) Standard Specification for Application and Finishing of Gypsum Board

ASTM C954 (2018) Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs from 0.033 in. (0.84 mm) to

0.112 in. (2.84 mm) in Thickness

ASTM D1037 (2012) Evaluating Properties of Wood-Base Fiber and Particle Panel Materials

ASTM D226/D226M (2017) Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing

ASTM D2394 (2017) Standard Test Methods for Simulated Service Testing of Wood and Wood-Base Finish Flooring

ASTM D5420 (2016) Standard Test Method for Impact

SECTION 09 29 00 Page 1

Resistance of Flat, Rigid Plastic Specimen by Means of a Strike Impacted by a Falling Weight (Gardner Impact)

ASTM E695 (2003; R 2015; E 2015) Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact Loading

ASTM E84 (2018a) Standard Test Method for Surface Burning Characteristics of Building Materials

FM GLOBAL (FM)

FM APP GUIDE (updated on-line) Approval Guide http://www.approvalguide.com/

GYPSUM ASSOCIATION (GA)

GA 214 (2010) Recommended Levels of Gypsum Board Finish

GA 216 (2010) Application and Finishing of Gypsum Panel Products

SCIENTIFIC CERTIFICATION SYSTEMS (SCS)

SCS SCS Global Services (SCS) Indoor Advantage

UNDERWRITERS LABORATORIES (UL)

UL 2818 (2013) GREENGUARD Certification Program For Chemical Emissions For Building Materials, Finishes And Furnishings

UL Fire Resistance (2014) Fire Resistance Directory

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Water-Resistant Gypsum Backing Board

Abuse Resistant Gypsum Board

Accessories

Gypsum Board

Recycled Content for Gypsum Board

Recycled Content for Paper Facing and Gypsum Cores

SECTION 09 29 00 Page 2

VOC Content of Joint Compound

SD-07 Certificates

Asbestos Free Materials

Certify that gypsum board types, gypsum backing board types, cementitious backer units, and joint treating materials do not contain asbestos.

Indoor Air Quality

Indoor Air Quality for Non-aerosol Adhesives

Indoor Air Quality for Aerosol Adhesives

SD-08 Manufacturer's Instructions

Safety Data Sheets

SD-10 Operation and Maintenance Data

Manufacturer Maintenance Instructions; G R

1.3 CERTIFICATIONS

1.3.1 Indoor Air Quality Certifications

Submit required indoor air quality certifications in one submittal package.

1.3.1.1 Ceiling and Wall Systems

Provide products certified to meet indoor air quality requirements by UL 2818 (Greenguard) Gold, SCS Global Services Indoor Advantage Gold or provide certification or validation by other third-party program that products meet the requirements of this Section. Provide current product certification documentation from certification body. When product does not have certification, provide validation that product meets the indoor air quality product requirements cited herein.

1.3.1.2 Adhesives and Sealants

Provide products certified to meet indoor air quality requirements by UL 2818 (Greenguard) Gold, SCS Global Services Indoor Advantage Gold or provide certification or validation by other third-party program that products meet the requirements of this Section. Provide current product certification documentation from certification body. When product does not have certification, provide validation that product meets the indoor air quality product requirements cited herein.

1.4 DELIVERY, STORAGE, AND HANDLING

1.4.1 Delivery

Deliver materials in the original packages, containers, or bundles with each bearing the brand name, applicable standard designation, and name of manufacturer, or supplier.

SECTION 09 29 00 Page 3

1.4.2 Storage

Keep materials dry by storing inside a sheltered building. Where necessary to store gypsum board and cementitious backer units outside, store off the ground, properly supported on a level platform, and protected from direct exposure to rain, snow, sunlight, and other extreme weather conditions. Provide adequate ventilation to prevent condensation. Store per manufacturer's recommendations for allowable temperature and humidity range. Do not store gypsum wallboard with materials which have high emissions of volatile organic compounds (VOCs) or other contaminants. Do not store panels near materials that may offgas or emit harmful fumes, such as kerosene heaters, fresh paint, or adhesives. Do not use materials that have visible moisture or biological growth.

1.4.3 Handling

Neatly stack gypsum board and cementitious backer units flat to prevent sagging or damage to the edges, ends, and surfaces.

1.5 QUALIFICATIONS

Furnish type of gypsum board work specialized by the installer with a minimum of 3 years of documented successful experience.

1.6 SCHEDULING

Commence application only after the area scheduled for gypsum board work is completely weathertight. The heating, ventilating, and air-conditioning systems must be complete and in operation prior to application of the gypsum board. If the mechanical system cannot be activated before gypsum board is begun, the gypsum board work may proceed in accordance with an approved plan to maintain the environmental conditions specified below. Apply gypsum board prior to the installation of finish flooring and acoustic ceiling.

1.7 ENVIRONMENTAL REQUIREMENTS

Do not expose the gypsum board to excessive sunlight prior to gypsum board application. Maintain a continuous uniform temperature of not less than 10 degrees C and not more than 27 degrees C for at least one week prior to the application of gypsum board work, while the gypsum board application is being done, and for at least one week after the gypsum board is set.

Shield air supply and distribution devices to prevent any uneven flow of air across the plastered surfaces. Provide ventilation to exhaust moist air to the outside during gypsum board application, set, and until gypsum board jointing is dry. In glazed areas, keep windows open top and bottom or side to side 75 to 100 mm. Reduce openings in cold weather to prevent freezing of joint compound when applied. For enclosed areas lacking natural ventilation, provide temporary mechanical means for ventilation.

In unglazed areas subjected to hot, dry winds or temperature differentials from day to night of 10 degrees C or more, screen openings with cheesecloth or similar materials. Avoid rapid drying. During periods of low indoor humidity, provide minimum air circulation following gypsum boarding and until gypsum board jointing complete and is dry.

1.8 FIRE RESISTIVE CONSTRUCTION

Comply with specified fire-rated assemblies for design numbers indicated

SECTION 09 29 00 Page 4 per UL Fire Resistance or FM APP GUIDE.

PART 2 PRODUCTS

2.1 MATERIALS

Conform to specifications, standards and requirements specified. Provide gypsum board types, gypsum backing board types, cementitious backing units, and joint treating materials manufactured from asbestos free materials only. Submit Safety Data Sheets, recycled content for gypsum board, recycled content for paper facing and gypsum cores, and manufacturer maintenance instructions for gypsum materials including adhesives.

2.1.1 Gypsum Board

2.1.1.1 Regular

1200 mm wide, 15.9 mm thick, tapered edges.

2.1.2 Regular Water-Resistant Gypsum Backing Board

ASTM C1396/C1396M

2.1.2.1 Regular

1200 mm wide, 15.9 mm thick, tapered edges.

2.1.3 Abuse Resistant Gypsum Board

1200 mm wide, 15.9 mm thick, tapered edges.

Reinforced gypsum panel with imbedded fiber mesh or lexan backing tested in accordance with the following tests. Hard body impact test must attain a Level 2 performance in accordance with ASTM C1629/C1629M . Provide fasteners that meet manufacturer requirements and specifications stated within this section. Abuse resistant gypsum board, when tested in accordance with ASTM E84, have a flame spread rating of 25 or less and a smoke developed rating of 50 or less.

2.1.3.1 Soft Body Impact Test

ASTM E695 or ASTM D2394 for impact penetration and deformation. ASTM E695 using a 27.2 kg leather bag filled with steel pellets, resisting no less than 407 N-m cumulative impact energy before failure or ASTM D2394 using

139.7 mm hemispherical projectile resisting no less than 357 N-m before failure. Provide test specimen stud spacing a minimum 406 mm on center.

2.1.3.2 Hard Body Impact Test

Comply with hard body impact test in accordance with ASTM C1629/C1629M Classification Level 2.

2.1.3.3 Surface Abrasion Test

Comply with test surface abrasion test in accordance with ASTM C1629/C1629M .

2.1.3.4 Indentation Test

ASTM D5420 or ASTM D1037 for indentation resistance. ASTM D5420 using a .907

SECTION 09 29 00 Page 5 kg weight with a 16 mm hemispherical impacting head dropped once 915 mm creating not more than 3.5 mm indentation or ASTM D1037 using no less than 213 kg weight applied to the 11.13 mm diameter ball to create not more than a 0.5 mm indentation depth.

2.1.4 Joint Treatment Materials

ASTM C475/C475M. Product must be low emitting VOC types with VOC limits not exceeding 50 g/L. Provide data identifying VOC content of joint compound. Use all purpose joint and texturing compound containing inert fillers and natural binders, including lime compound. Pre-mixed compounds must be free of antifreeze, vinyl adhesives, preservatives, biocides and other slow releasing compounds.

2.1.4.1 Embedding Compound

Specifically formulated and manufactured for use in embedding tape at gypsum board joints and compatible with tape, substrate and fasteners.

2.1.4.2 Finishing or Topping Compound

Specifically formulated and manufactured for use as a finishing compound.

2.1.4.3 All-Purpose Compound

Specifically formulated and manufactured to serve as both a taping and a finishing compound and compatible with tape, substrate and fasteners.

2.1.4.4 Setting or Hardening Type Compound

Specifically formulated and manufactured for use with fiber glass mesh tape.

2.1.4.5 Joint Tape

Use cross-laminated, tapered edge, reinforced paper, or fiber glass mesh tape recommended by the manufacturer.

2.1.5 Fasteners

2.1.5.1 Screws

ASTM C1002, Type "G", Type "S" or Type "W" steel drill screws for fastening gypsum board to gypsum board, wood framing members and steel framing members less than 0.84 mm thick. ASTM C954 steel drill screws for fastening gypsum board to steel framing members 0.84 to 2.84 mm thick.

Provide cementitious backer unit screws with a polymer coating.

2.1.5.2 Staples

1.5 mm thick flattened galvanized wire staples with 11.1 mm wide crown outside measurement and divergent point for base ply of two-ply gypsum board application. Use as follows:

SECTION 09 29 00 Page 6

Length of Legs Thickness of Gypsum Board

28.6 mm 1-1/8 inches 12.7 mm 1/2 inch

31.8 mm 1-1/4 inches 15.9 mm 5/8 inch

2.1.6 Adhesives

Provide certification or validation of indoor air quality for non-aerosol adhesives applied on the interior of the building (inside of the weatherproofing system). Provide certification or validation of indoor air quality for aerosol adhesives used on the interior of the building (inside of the weatherproofing system).

2.1.6.1 Adhesive for Fastening Gypsum Board to Metal Framing

Not permitted.

2.1.7 Accessories

ASTM C1047. Fabricate from corrosion protected steel designed for intended use. Accessories manufactured with paper flanges are not acceptable. Flanges must be free of dirt, grease, and other materials that may adversely affect bond of joint treatment. Provide prefinished or job decorated materials.

2.1.8 Asphalt Impregnated Building Felt

Provide a 6.7 kg asphalt moisture barrier over glass mat covered or reinforced gypsum sheathing. Conforming to ASTM D226/D226M Type 1 (No.

15) for asphalt impregnated building felt.

2.1.9 Water

Provide clean, fresh, and potable water.

PART 3 EXECUTION

3.1 EXAMINATION

3.1.1 Framing and Furring

Verify that framing and furring are securely attached and of sizes and spacing to provide a suitable substrate to receive gypsum board and cementitious backer units. Verify that all blocking, headers and supports are in place to support plumbing fixtures and to receive soap dishes, grab bars, towel racks, and similar items. Do not proceed with work until framing and furring are acceptable for application of gypsum board and cementitious backer units.

3.1.2 Building Construction Materials

Do not install building construction materials that show visual evidence of biological growth.

3.2 APPLICATION OF GYPSUM BOARD

Apply gypsum board to framing and furring members in accordance with

SECTION 09 29 00 Page 7

ASTM C840 or GA 216 and the requirements specified. Apply gypsum board with separate panels in moderate contact; do not force in place. Stagger end joints of adjoining panels. Neatly fit abutting end and edge joints.

Use gypsum board of maximum practical length; select panel sizes to minimize waste. Cut out gypsum board to make neat, close, and tight joints around openings. In vertical application of gypsum board, provide panels in lengths required to reach full height of vertical surfaces in one continuous piece. Lay out panels to minimize waste; reuse cutoffs whenever feasible. Surfaces of gypsum board and substrate members may not be bonded together with an adhesive. Treat edges of cutouts for plumbing pipes, screwheads, and joints with water-resistant compound as recommended by the gypsum board manufacturer. Provide type of gypsum board for use in each system specified herein as indicated.

3.2.1 Application of Gypsum Board to Steel Framing and Furring

Apply in accordance with ASTM C840, System VIII or GA 216 .

3.2.2 Control Joints

Install expansion and contraction joints in ceilings and walls in accordance with ASTM C840, System XIII or GA 216 . Fill control joints between studs in fire-rated construction with firesafing insulation to match the fire-rating of construction.

3.3 FINISHING OF GYPSUM BOARD

Tape and finish gypsum board in accordance with ASTM C840, GA 214 and GA 216 . Finish plenum areas above ceilings to Level 1 in accordance with GA 214 . Finish water resistant gypsum backing board, ASTM C1396/C1396M , to receive ceramic tile to Level 2 in accordance with GA 214 . Finish walls and ceilings to receive a heavy-grade wall covering or heave textured finish before painting to Level 3 in accordance with GA 214 .

Finish walls and ceilings without critical lighting to receive flat paints, light textures, or wall coverings to Level 4 in accordance with GA 214 . Unless otherwise specified, finish all gypsum board walls, partitions and ceilings to Level 5 in accordance with GA 214 . Provide joint, fastener depression, and corner treatment. Tool joints as smoothly as possible to minimize sanding and dust. Do not use self-adhering fiber glass mesh tape with conventional drying type joint compounds; use setting or hardening type compounds only. Provide treatment for water-resistant gypsum board as recommended by the gypsum board manufacturer. Protect workers, building occupants, and HVAC systems from gypsum dust.

3.3.1 Uniform Surface

Wherever gypsum board is to receive eggshell, semigloss or gloss paint finish, or where severe, up or down lighting conditions occur, finish gypsum wall surface in accordance to GA 214 Level 5. In accordance with GA 214 Level 5, apply a thin skim coat of joint compound to the entire gypsum board surface, after the two-coat joint and fastener treatment is complete and dry.

3.4 SEALING

Seal openings around pipes, fixtures, and other items projecting through gypsum board and cementitious backer units as specified…