Att 02 - Spec - Vol 02 - 01302026 - MCR - Minneapolis.pdf

EHRM Infrastructure Upgrades - Minneapolis VAMC - MCR Modernization Project #: 618-26-701

Door Hardware

08 71 00 - 17

INTERIOR SECURITY DOORS

INTERIOR SINGLE SECURITY DOORS

HW-SH-3F

Each [AC, EL, REX, DPS] Door to Have: RATED

1 Continuous Transfer Hinge x INTEGRAL HINGE GUARD CHANNEL X ADJUSTA-SCREWS x 4-THRUWIRE TRANSFER x

IN-HINGE ACCESS PANEL

1 Electrified Lock F13-MOD x RIGID OUTSIDE LEVER X NO INSIDE

TURN X KEY RETRACTS LATCHBOLT AND

DEADBOLT (E01-REX, E06) 24VDC

1 Power Supply Regulated, Filtered, 24VDC, Amperage as required 1 Closer C02011/C020211 1 EL Rim Exit Device ANSI 09 x E01 x E04 1 Auto Door Bottom R0Y346 – HEAVY DUTY 2 Mop Plate 1 Edge Guard (@ Wood Doors) J208M / J211 (VERIFY), CUT: HARDWARE 1 Wall Stop L02101 CONVEX 1 Floor Stop (if wall not available) L02121 x 3 FASTENERS 1 Set Self-Adhesive Seals R0Y154 1 Alarm Contact

120VAC POWER, CONDUIT, AND WIRING BY DIVISION 26.

1 Access Control Reader by Division 28 Door normally closed and locked.

Entrance by presenting a valid card to card-reader.

Egress allowed at all times.

Loss of power maintains security from lock side, entrance by mechanical key only.

Door monitored for door ajar and forced open.

INTERIOR PAIRS OF SECURITY DOORS

HW-SH-9A

Each [PB] Pair to Have: [AC, ELR, REX, DPS] Integrated Door to Have: RATED 2 Continuous Transfer Hinge x INTEGRAL HINGE GUARD CHANNEL

X ADJUSTA-SCREWS x 4-THRUWIRE TRANSFER x

IN-HINGE ACCESS PANEL

1 Electrified Lock F07 (E01-REX, E06) 24VDC 1 Set Auto Flush Bolts TYPE 25 1 Dust Proof Strike L04021 1 Push-button Combination Lock N3 – A156.13 F07 G1 E06 1 Coordinator TYPE 21A 1 Overlapping Astragal with R0Y634 x R0Y154 x THRU-BOLTS Self-Adhesive Seal2 Closers C02011/C02021 4 Armor Plates J101 x 1.275 MM (0.050 INCH) THICKNESS 2 Edge Guard (@ Wood Doors) J208M / J211 (VERIFY), CUT: HARDWARE 2 Overhead Stops C01541-ADJUSTABLE 1 EL Rim Exit Device ANSI 09 x E01 x E04 2 Set Self-Adhesive Seals R0Y154 1 Position Switch Alarm Contact 1 Power Supply Regulated x 24VDC x Amperage As Req'd 1 Access Control Reader by Division 28 1 Auto Door Bottom R0Y346 – HEAVY DUTY

Door Hardware

08 71 00 - 18

2 Alarm Contacts

120VAC POWER, CONDUIT, AND WIRING BY DIVISION 26

Door normally closed and locked.

Entrance by presenting a valid card to card-reader.

Egress allowed at all times.

Loss of power maintains security from lock side, entrance by mechanical key only.

Door monitored for door ajar and forced open.

- - - E N D - - -

Subsurface Preparation for Floor Finishes

09 05 16 - 1

SECTION 09 05 16

SUBSURFACE PREPARATION FOR FLOOR FINISHES

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies subsurface preparation requirements for areas to receive the installation of applied and resinous flooring. This section includes removal of existing floor coverings, testing concrete for moisture and pH, remedial floor coating for concrete floor slabs having Unsatisfactory moisture or pH conditions, floor leveling and repair as required.

1.2 RELATED WORK

A. Section 07 92 00, JOINT SEALANTS.

1.3 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA and TEST

DATA.

B. Written approval confirming product compatibility with subfloor material manufacturer and the flooring manufacturer

C. Product Data:

1. Moisture remediation system

2. Underlayment Primer

3. Cementitious Self-Leveling Underlayment

4. Cementitious Trowel-Applied Underlayment (Not suitable for resinous floor finishes)

D. Test Data:

1. Moisture test and pH results performed by a qualified independent testing agency or warranty holding manufacturer’s technical representative.

1.4 DELIVERY AND STORAGE

A. Deliver materials in containers with labels legible and intact and grade-seals unbroken.

B. Store material to prevent damage or contamination.

1.5 APPLICABLE PUBLICATIONS

A. Publications listed below form a part of this specification to the extent referenced. Publications are referenced in text by basic designation only.

B. ASTM International(ASTM):

D638-14(2014) ...................... Standard Test Method for Tensile Properties of Plastics

D4259-18(2019) .................... Standard Practice for Preparation of Concrete by Abrasion Prior to Coating Application.

C109/C109M-20b(2020) ....... Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. Cube Specimens

7234-19(2020) ....................... Standard Test Method for Pull-Off Adhesion Strength of Coatings on Concrete Using Portable Pull-Off Adhesion Testers

C. E96/E96M-16(2016) Standard Test Methods for Water Vapor Transmission of Materials F710-1e1(2020) .................... Standard Practice for Preparing Concrete Floors to Receive

Resilient Flooring

F1869-16a ............................. Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride

09 05 16 - 2

F2170-19a(2020) .................. Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes

C348-20(2020) ...................... Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars

C191-19(2020) ...................... Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle

PART 2 - PRODUCTS

2.1 MOISTURE REMEDIATION COATING

A. System Descriptions:

1. High-solids, epoxy system designed to suppress excess moisture in concrete prior to an overlayment. For use under resinous products, VCT, tile and carpet where issues caused by moisture vapor are a concern.

B. Products: Subject to compliance with applicable fire, health, environmental, and safety requirements for storage, handling, installation, and clean up.

C. System Components: Verify specific requirements as systems vary by manufacturer. Verify build up layers and installation method. Verify compatibility with substrate. Use manufacturer’s standard components, compatible with each other and as follows:

1. Liquid applied coating:

a. Resin: epoxy.

b. Formulation Description: Multiple component high solids.

c. Application: Per manufacturer’s written installation requirements.

d. Thickness: minimum 10 mils

D. Material Vapor Permeance: Application shall achieve a permeance rating of less than 0.1 perm in accordance with ASTM E96/E96M.

E. Maximum RH requirement: 100% testing in accordance with ASTM F2170.

2.2 CEMENTITIOUS SELF-LEVELING UNDERLAYMENT

A. System Descriptions:

1. High performance self-leveling underlayment resurfacer. Single component, self-leveling, cementitious material designed for easy application as an underlayment for all types of flooring materials. It is used for substrate repair and leveling.

Property Test Value

Tensile Strength

ASTM D638 4,400 psi

Volatile Organic Compound Limits (V.O.C.)

SCAMD Rule 1113 (Ammended 02/05/2016)

25 grams per liter

Permeance ASTM E96 0.1 perms

Tensile Modulus ASTM D638 1.9X105 psi

Percent Elongation ASTM D638 12%

Cure Rate Per manufacture’s Data 4 hours Tack free with 24hr recoat window

Bond Strength ASTM D7234 100% bond to concrete failure

09 05 16 - 3

B. Products: Subject to compliance with applicable fire, health, environmental, and safety requirements for storage, handling, installation, and clean up. Gypsum-based products are unacceptable.

C. System Characteristics:

1. Wearing Surface: smooth

2. Thickness: Per architectural drawings, ranging from feathered edge to 1”, per application. Applications greater than 1” require additional 3/8” aggregate to mix or as recommended by manufacturer.

D. Underlayment shall be calcium aluminate cement-based, containing Portland cement. Gypsum-based products are unacceptable.

E. Compressive Strength: Minimum 4100 psi in 28 days in accordance with ASTM C109/C109M.

F. Flexural Strength: Minimum 1000 psi in 28 days in accordance with ASTM C348

G. Dry Time: Underlayment shall receive the application of floor coverings in 16 hours.

H. Primer: compatible and as recommended by manufacturer for use over intended substrate

I. System Components: Manufacturer's standard components that are compatible with each other and as follows:

1. Primer:

a. Resin: copolymer

b. Formulation Description: single component ready to use.

c. Application Method: Squeegee and medium nap roller.

1) All puddles shall be removed, and material shall be allowed to dry, 1-2 hours at 70F/21C.

d. Number of Coats: (1) one.

2. Grout Resurfacing Base:

a. Formulation Description: Single component, cementitious self-leveling high-early and high-ultimate strength grout.

b. Application Method: colloidal mix pump, cam rake, spike roll.

1) Thickness of Coats: Per architectural scope, 1” lifts.

2) Number of Coats: More than one if needed.

c. Aggregates: for applications greater than 1inch, require additional 3/8” aggregate to mix.

J.

2.3 CEMENTITIOUS TROWEL-APPLIED UNDERLAYMENT (NOT SUITABLE FOR RESINOUS

FLOOR FINISHES)

A. Underlayment shall be calcium aluminate cement-based, containing Portland cement. Gypsum-based products are unacceptable.

B. Compressive Strength: Minimum 4000 psi in 28 days

C. Trowel-applied underlayment shall not contain silica quartz (sand).

D. Dry Time: Underlayment shall receive the application of floor covering in 15-20 minutes.

Property Test Value

Compressive Strength

ASTM C109/C109M

2,200 psi @ 24 hrs 3,000 psi @ 7 days

Initial set time Final Set time

ASTM C191

30-45 min.

1 to 1.5 hours

Bond Strength

ASTM D7234

100% bond to concrete failure

09 05 16 - 4

PART 3 - EXECUTION

3.1 ENVIRONMENTAL REQUIREMENTS

A. Maintain ambient temperature of work areas at not less than 16 degree C (60 degrees F), without interruption, for not less than 24 hours before testing and not less than three days after testing.

B. Maintain higher temperatures for a longer period of time where required by manufacturer's recommendation.

C. Do not install materials when the temperatures of the substrate or materials are not within 60-85 degrees F/ 16-30 degrees C.

3.2 SURFACE PREPARATION

A. Existing concrete slabs with existing floor coverings:

1. Conduct visual observation of existing floor covering for adhesion, water damage, alkaline deposits, and other defects.

2. Remove existing floor covering and adhesives. Comply with local, state and federal regulations and the RFCI Recommended Work Practices for Removal of Resilient Floor Coverings, as applicable to the floor covering being removed.

B. Concrete shall meet the requirements of ASTM F710 and be sound, solid, clean, and free of all oil, grease, dirt, curing compounds, and any substance that might act as a bond-breaker before application. As required prepare slab by mechanical methods. No chemicals or solvents shall be used.

C. General: Prepare and clean substrates according to flooring manufacturer's written instructions for substrate indicated.

D. Prepare concrete substrates per ASTM D4259 as follows:

1. Dry abrasive blasting.

2. Wet abrasive blasting.

3. Vacuum-assisted abrasive blasting.

4. Centrifugal-shot abrasive blasting.

5. Comply with manufacturer's written instructions.

E. Repair damaged and deteriorated concrete according to flooring manufacturer's written recommendations.

F. Verify that concrete substrates are dry.

G. Perform anhydrous calcium chloride test, ASTM F 1869. Proceed with application only after substrates have maximum moisture-vapor-emission rate of per flooring manufactures formal and project specific written recommendation.

H. Perform in situ probe test, ASTM F2170. Proceed with application only after substrates do not exceed a maximum potential equilibrium relative humidity per flooring manufacture’s formal and project specific written recommendation.

I. Provide a written report showing test placement and results.

J. Prepare joints in accordance with Section 07 92 00, JOINT SEALANTS and material manufacturer’s instructions.

K. Alkalinity: Measure surface pH in accordance with procedures provided in ASTM F710 or as outlined by qualified testing agency or flooring manufacturer’s technical representative.

L. Tolerances: Subsurface shall meet the flatness and levelness tolerance specified on drawings or recommended by the floor finish manufacturer. Tolerance shall also not to exceed 1/4” deviation in 10’. As required, install underlayment to achieve required tolerance.

09 05 16 - 5

M. Other Subsurface: For all other subsurface conditions, such as wood or metal, contact the floor finish or underlayment manufacturer, as appropriate, for proper preparation practices.

3.3 MOISTURE REMEDIATION COATING:

A. Where results of relative humidity testing (ASTM F2170) exceed the requirements of the specified flooring manufacturer, apply remedial coating as specified to correct excessive moisture condition.

B. Prior to remedial floor coating installation mechanically prepare the concrete surface to provide a concrete surface profile in accordance with ASTM D4259.

C. Mix and apply moisture remediation coating in accordance with manufacturer’s instructions.

3.4 CEMENTITIOUS UNDERLAYMENT

A. Install cementitious self-leveling underlayment as required to correct surface defects, floor flatness or levelness corrections to meet the tolerance requirements as or detailed on drawings, provide a smooth surface for the installation of floor covering, or meet elevation requirements detailed on drawings.

B. Mix and apply in accordance with manufacturer's instructions.

3.5 PROTECTION

A. Prior to the installation of the finish flooring, the surface of the underlayment should be protected from abuse by other trades by the use of plywood, tempered hardwood, or other suitable protection course.

3.6 FIELD QUALITY CONTROL

A. Where specified, field sampling of products shall be conducted by a qualified, independent testing facility.

Non-Structural Metal Framing

09 22 16 - 1

SECTION 09 22 16

NON-STRUCTURAL METAL FRAMING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies steel studs wall systems, shaft wall systems, ceiling or soffit suspended or furred framing, wall furring, fasteners, and accessories for the screw attachment of gypsum board, plaster bases or other building boards.

1.2 RELATED WORK

A. Load bearing framing: Section 05 40 00, COLD-FORMED METAL FRAMING.

B. Support for wall mounted items: Section 05 50 00, METAL FABRICATIONS.

C. Ceiling suspension systems for acoustical tile or panels and lay in gypsum board panels:

Section 09 51 00, ACOUSTICAL CEILINGS and Section 09 29 00, GYPSUM BOARD.

1.3 TERMINOLOGY

A. Description of terms shall be in accordance with ASTM C754, ASTM C11, ASTM C841 and as specified.

B. Underside of Structure Overhead: In spaces where steel trusses or bar joists are shown, the underside of structure overhead shall be the underside of the floor or roof construction supported by beams, trusses, or bar joists. In interstitial spaces with walk-on floors the underside of the walk-on floor is the underside of structure overhead.

C. Thickness of steel specified is the minimum bare (uncoated) steel thickness.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Manufacturer's Literature and Data:

1. Studs, runners and accessories.

2. Hanger inserts.

3. Channels (Rolled steel).

4. Furring channels.

5. Screws, clips and other fasteners.

C. Shop Drawings:

1. Typical ceiling suspension system.

2. Typical metal stud and furring construction system including details around openings and corner details.

3. Typical shaft wall assembly

4. Typical fire rated assembly and column fireproofing showing details of construction same as that used in fire rating test.

D. Test Results: Fire rating test designation, each fire rating required for each assembly.

1.5 DELIVERY, IDENTIFICATION, HANDLING AND STORAGE

A. In accordance with the requirements of ASTM C754.

1.6 APPLICABLE PUBLICATIONS

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

09 22 16 - 2

B. American Society For Testing And Materials (ASTM) A641-09 ................................. Zinc-Coated (Galvanized) Carbon Steel Wire

A653/653M-11 ....................... Specification for Steel Sheet, Zinc Coated (Galvanized) or Zinc- Iron Alloy-Coated (Galvannealed) by Hot-Dip Process.

C11-10 ................................... Terminology Relating to Gypsum and Related Building Materials and Systems

C635-07 ................................. Manufacture, Performance, and Testing of Metal Suspension System for Acoustical Tile and Lay-in Panel Ceilings

C636-08 ................................. Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels

C645-09 ................................. Non-Structural Steel Framing Members

C754-11 ................................. Installation of Steel Framing Members to Receive Screw- Attached Gypsum Panel Products

C841-03(R2008) ................... Installation of Interior Lathing and Furring

C954-10 ................................. 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

E580-11 ................................. Application of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Moderate Seismic Restraint.

PART 2 - PRODUCTS

2.1 PROTECTIVE COATING

A. Galvanize steel studs, runners (track), rigid (hat section) furring channels, "Z" shaped furring channels, and resilient furring channels, with coating designation of G40 or equivalent.

2.2 STEEL STUDS AND RUNNERS (TRACK)

A. ASTM C645, modified for thickness specified and sizes as shown.

1. Use C 645 steel, 0.75 mm (0.0296-inch) minimum base-metal (30 mil).

2. Runners same thickness as studs.

3. Exception: Members that can show certified third party testing with gypsum board in accordance with ICC ES AC86 (Approved May 2012) need not meet the minimum thickness limitation or minimum section properties set forth in ASTM C 645. The submission of an evaluation report is acceptable to show conformance to this requirement. Use C 645 steel, 0.48mm (0.019 inch) minimum base-metal (19 mil).

a. Increase member thickness to minimum 30 MIL (20 GA) 0.762 MM studs at following conditions, if contractor selects 2.2 A. 3. Exception above and uses 19 MIL studs:

1) One or both sides of walls faced with any of following:

a) Wall mounted cabinetry and equipment.

b) Tile Backing Board.

c) Plaster.

d) Moisture-resistant.

e) Abuse-resistant wallboard.

f) Lead backed gypsum wallboard.

b. Where walls do not extend to overhead structural deck, and without supporting diagonal bracing, or horizontal stiffeners.

4. Increase member thickness to minimum 54 MIL (16 GA) 1.37 MM studs at following conditions:

09 22 16 - 3

a. One or both sides of walls faced with any of following:

1) Wall mounted cabinetry and equipment.

2) Adhered stone.

5. Where walls do not extend to overhead structural deck, and without supporting diagonal bracing, or horizontal stiffeners.

B. Provide not less than two cutouts in web of each stud, approximately 300 mm (12 inches) from each end, and intermediate cutouts on approximately 600 mm (24-inch) centers.

C. Doubled studs for openings and studs for supporting concrete backer-board.

D. Studs 3600 mm (12 feet) or less in length shall be in one piece.

E. Shaft Wall Framing:

1. Conform to rated wall construction.

2. C-H Studs or C-T Studs.

3. E Studs.

4. J Runners.

5. Steel Jamb-Strut.

2.3 FURRING CHANNELS

A. Rigid furring channels (hat shape): ASTM C645.

B. Resilient furring channels:

1. Not less than 0.45 mm (0.0179-inch) thick bare metal.

2. Semi-hat shape, only one flange for anchorage with channel web leg slotted on anchorage side, channel web leg on other side stiffens fastener surface but shall not contact anchorage surface other channel leg is attached to.

C. "Z" Furring Channels:

1. Not less than 0.45 mm (0.0179-inch)-thick base metal, with 32 mm (1-1/4 inch) and 19 mm (3/4-inch) flanges.

2. Web furring depth to suit thickness of insulation.

D. Rolled Steel Channels: ASTM C754, cold rolled; or, ASTM C841, cold rolled.

2.4 FASTENERS, CLIPS, AND OTHER METAL ACCESSORIES

A. ASTM C754, except as otherwise specified.

B. For fire rated construction: Type and size same as used in fire rating test.

C. Fasteners for steel studs thicker than 0.84 mm (0.033-inch) thick. Use ASTM C954 steel drill screws of size and type recommended by the manufacturer of the material being fastened.

D. Clips: ASTM C841 (paragraph 6.11), manufacturer’s standard items. Clips used in lieu of tie wire shall have holding power equivalent to that provided by the tie wire for the specific application.

E. Concrete ceiling hanger inserts (anchorage for hanger wire and hanger straps): Steel, zinc-coated (galvanized), manufacturers standard items, designed to support twice the hanger loads imposed and the type of hanger used.

F. Tie Wire and Hanger Wire:

1. ASTM A641, soft temper, Class 1 coating.

2. Gage (diameter) as specified in ASTM C754 or ASTM C841.

G. Attachments for Wall Furring:

1. Manufacturers standard items fabricated from zinc-coated (galvanized) steel sheet.

2. For concrete or masonry walls: Metal slots with adjustable inserts or adjustable wall furring brackets. Spacers may be fabricated from 1 mm (0.0396-inch) thick galvanized steel with corrugated edges.

09 22 16 - 4

H. Power Actuated Fasteners: Type and size as recommended by the manufacturer of the material being fastened, but no less than:

1. Power driven type, to withstand minimum 190 LBS 86 kg shear when driven.

I. Knee Wall Brace:

1. Steel tube and baseplate bolted to concrete floor slab with tube projecting vertically;

concealed within framed walls to provide structural stability for knee walls.

2. Design components compatible with wall type.

3. Material: Cold-rolled steel tube and base plate, fully welded.

4. Overall height: Wall height less 2 IN 50 MM.

5. Spacing as recommended by manufacturer.

J. Shower Seat Support:

1. Conceal in framed walls.

2. Vertical steel channels with welded steel plate.

3. Anchor channels to floor and structure above with steel angles.

4. Provide stainless steel sleeves at each bolt that attach shower seat to support bracket in wall

a. Extend past finish face of wall tile 1/8 IN 3 MM.

5. Components:

a. C3 x 6 cold formed steel channel.

1) Brace with horizontal channel at 96 IN 2.4 M AFF.

b. Steel plate: 24 x 20 x 3/8 IN 610 x 510 x 10 MM.

1) Weld to steel channels with top of plate at 20 IN 500 MM AFF.

c. Steel angles: 3 x 3 x 1/4 x 3 IN 75 x 75 x 6 x 75 MM.

d. Stainless steel sleeves: 3/8 IN 10 MM diameter.

e. Expansion bolts with 3-1/2 IN 90 MM embedment.

K. Closure:

1. Continuous 30 MIL (20 GA) 0.75 MM galvanized closure angle to receive vapor retarder and vapor retarder tape.

L. Metal Blocking (TYPE B):

1. C-shaped modified track runners.

2. G40 galvanized.

3. Backing height: 6 IN 150 MM minimum or deeper.

4. Flange width: 1-1/4 IN 32 MM minimum.

5. Thickness: 30 MIL (20 GA) 0.75 MM minimum.

M. Metal Blocking (TYPE C):

1. C-shaped modified track runners.

2. G40 galvanized.

3. Backing height: 8 IN 203 MM minimum or deeper.

4. Flange width: 1-1/4 IN 32 MM minimum.

5. Thickness: 68 MIL (14 GA) 1.72 MM minimum.

N. Backing - Flat Plate (TYPE A):

1. Flat, sheet metal stock per ASTM A1008.

2. G40 galvanized.

3. Thickness: 43 MIL (18 GA) 1.27 MM minimum.

O. General installations:

1. Dimensions: 2 to 12 IN 50 to 300 MM wide, as necessary for items to be supported.

2. Thickness: 30 MIL (20 GA) 0.75 MM minimum.

3. Use heavier gauge as necessary for items to be supported.

P. Casework and other wall mounted items:

1. Dimension: Minimum 10 IN 250 MM wide for items to be supported.

2. Thickness: 54 MIL (16 GA) 1.5 MM minimum.

3. Thickness: 33 MIL (20 GA) 0.9 MM minimum.

09 22 16 - 5

4. Use heavier gauge as necessary for items to be supported

2.5 SUSPENDED CEILING SYSTEM FOR GYPSUM BOARD (OPTION)

A. Conform to ASTM C635, heavy duty, with not less than 35 mm (1-3/8 inch) wide knurled capped flange face designed for screw attachment of gypsum board.

B. Wall track channel with 35 mm (1-3/8 inch) wide flange.

PART 3 - EXECUTION

3.1 INSTALLATION CRITERIA

A. Where fire rated construction is required for walls, partitions, columns, beams and floor-ceiling assemblies, the construction shall be same as that used in fire rating test.

B. Construction requirements for fire rated assemblies and materials shall be as shown and specified, the provisions of the Scope paragraph (1.2) of ASTM C754 and ASTM C841 regarding details of construction shall not apply.

3.2 INSTALLING STUDS

A. Install studs in accordance with ASTM C754, except as otherwise shown or specified.

B. Space studs not more than 610 mm (24 inches) on center.

C. Cut studs 6 mm to 9 mm (1/4 to 3/8-inch) less than floor to underside of structure overhead when extended to underside of structure overhead.

D. Where studs are shown to terminate above suspended ceilings, provide bracing as shown or extend studs to underside of structure overhead.

E. Extend studs to underside of structure overhead for fire, rated partitions, smoke partitions, shafts, and sound rated partitions and insulated exterior wall furring.

F. Openings:

1. Frame jambs of openings in stud partitions and furring with two studs placed back to back or as shown.

2. Fasten back to back studs together with 9 mm (3/8-inch) long Type S pan head screws at not less than 600 mm (two feet) on center, staggered along webs.

3. Studs fastened flange to flange shall have splice plates on both sides approximately 50 X

75 mm (2 by 3 inches) screwed to each stud with two screws in each stud. Locate splice plates at 600 mm (24 inches) on center between runner tracks.

4. Control Joints (CJ):

a. Install additional stud, maximum 1/2 IN 13 MM from jamb studs.

b. Do not fasten extra stud to track or jamb stud.

c. Refer to specification Section 09 29 00 for control joint locations.

5. Prefabricated headers, jambs, and sill framing systems option:

a. Proprietary opening framing systems may be used as an alternative to conventionally fabricated framing.

6. Door Openings:

a. 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.

b. Unless indicated otherwise, extend jamb studs through suspended ceilings and secure laterally to overhead structure.

c. Jamb Studs:

1) Install two studs at each jamb, unless otherwise indicated.

2) Minimum thickness of jamb studs: 30 MIL (20 GA) 0.762 MM at openings.

3) Securely attach jamb studs to door frames.

4) Attach drywall to both studs equally.

7. Headers:

09 22 16 - 6

a. Openings less than 4 FT 1.2 M wide:

1) Cut-to-length section of floor runner above and below wall openings.

2) Split flanges and bend webs at ends.

3) Overlap and screw attach jamb studs to frames.

b. Openings over 4 FT 1.2 M wide:

1) Cut-to-length, horizontal box beam studs above and below wall openings.

2) Design for actual span and loading.

c. Incorporate miscellaneous steel members, specified in Section 05 50 00, and wood blocking, specified in Section 06 10 00, where indicated.

8. Control Joints at head of jambs:

a. Install cripple studs at head adjacent to each jamb stud, with a minimum 1/2 IN 13

MM clearance from jamb stud to allow for installation of control joint in finished assembly.

9. Other Framed Openings:

a. Frame openings other than door openings the same as required for door openings, unless otherwise indicated.

b. Install framing below sills of openings to match framing required above door heads.

c. Cripple Studs:

1) Install cut-to-length intermediate vertical studs above and below openings.

2) Spacing: As indicated for typical full-length studs.

d. Incorporate miscellaneous steel members, specified in Section 05 50 00, and wood blocking, specified in Section 06 10 00, where indicated.

G. Fastening Studs:

1. Fasten studs located adjacent to partition intersections, corners and studs at jambs of openings to flange of runner tracks with two screws through each end of each stud and flange of runner.

2. Anchor studs to deflection track with wafer head screws on both flanges of each stud.

a. Maintain deflection gap between top of stud and top of slotted track.

b. Install screws at centerline of slot and secure allowing vertical movement.

3. Anchor fire rated partitions as required by fire resistance design, and firestopping design.

H. Chase Wall Partitions:

1. Locate cross braces for chase wall partitions to permit the installation of pipes, conduits, carriers and similar items.

2. Use studs or runners as cross bracing not less than 63 mm (2-1/2 inches wide).

I. Form building seismic or expansion joints with double studs back to back spaced 75 mm (three inches) apart plus the width of the seismic or expansion joint.

J. Do not bridge building control and expansion joints with non-load-bearing steel framing members. Frame both sides of joints independently.

K. Form control joint, with double studs spaced 13 mm (1/2-inch) apart.

L. Install supplementary framing, and blocking to support fixtures, equipment services, heavy trim, grab bars, toilet accessories, furnishings, or similar construction.

M. Where studs are installed directly against exterior masonry walls or dissimilar metals at exterior walls, install isolation strip between studs and exterior wall.

N. Position studs vertically engaging floor track and head of wall deflection track.

1. Align stud knockouts to facilitate running of wires and conduit.

O. Provide additional studs at corners, partition intersections and terminations of partitions, and at each side of control joints.

P. Where partitions abut vertical structural elements, provide perimeter relief per Gypsum Association GA-600 Strain Relief System details.

09 22 16 - 7

Q. Head-of-Wall:

1. Provide slotted top track for walls extended to structure.

2. Configure to resist lateral loads while accommodating deflection of overhead building superstructure without inducing axial loading on partition framing.

3. Secure deflection track to structure in accordance with industry standards and regulatory requirements.

4. Secure at corners and at ends.

5. Cut vertical studs 5/8 IN 16 MM short to create a deflection gap when installed into top track.

a. Secure vertical studs to top track with framing screw at each stud flange, screwing through track slots for positive stud connection.

6. Secure Gypsum Wallboard to vertical studs; do not secure Gypsum Wallboard to top track directly.

7. Where partitions attach to structural elements that are scheduled to receive Spray-applied Fire Resistive Materials (SFRM):

a. Install Z-bar to underside of steel beams and steel deck before application of sprayed fireproofing.

b. Locate Z-bars perpendicular to line of partition, spaced maximum 16 IN on center.

c. Attach each Z-bar with two 0.145 IN x 1 IN 3.7 MM x 25 MM powder-actuated fasteners located minimum 1 IN from ends of Z-bar.

d. After fireproofing, secure top track to Z-bars with No. 8 x 5/8 IN wafer head framing screws spaced maximum 16 IN 400 MM on center.

8. Where fire-rated partitions are offset and will not clear fireproofed steel beam, extend Z-bar outrigger horizontally from bottom of beam out to minimum 2 IN 50 MM beyond width of head-of-wall.

a. Attach 3/4 IN 19 MM expanded metal lath continuous, width of top of Z-bar outriggers prior to fireproofing steel beam to accommodate sprayed fireproofing.

9. Prepare wall for installation of seals, firestopping, or both:

a. Fire-rated Walls: Prepare for fire-resistive joint assemblies specified in Section 07 84 00.

10. Non-fire rated partitions including smoke partitions: prepare for acoustical sealant specified in section 07 92 00 installing wall furring for finish applied to one side only

R. Wall furring-Stud System:

1. Framed with 63 mm (2-1/2 inch) or narrower studs, 600 mm (24 inches) on center.

2. Brace as specified in ASTM C754 for Wall Furring-Stud System or brace with sections or runners or studs placed horizontally at not less than three-foot vertical intervals on side without finish.

3. Securely fasten braces to each stud with two Type S pan head screws at each bearing.

S. Direct attachment to masonry or concrete; rigid channels or "Z" channels:

1. Install rigid (hat section) furring channels at 600 mm (24 inches) on center, horizontally or vertically.

2. Install "Z" furring channels vertically spaced not more than 600 mm (24 inches) on center.

3. At corners where rigid furring channels are positioned horizontally, provide mitered joints in furring channels.

4. Ends of spliced furring channels shall be nested not less than 200 mm (8 inches).

5. Fasten furring channels to walls with power-actuated drive pins or hardened steel concrete nails. Where channels are spliced, provide two fasteners in each flange.

6. Locate furring channels at interior and exterior corners in accordance with wall finish material manufacturers printed erection instructions. Locate "Z" channels within 100 mm (4 inches) of corner.

7. Where furring channels are installed directly against exterior masonry walls or dissimilar metals at exterior walls, install isolation strip between studs and exterior wall.

09 22 16 - 8

3.3 INSTALLING SUPPORTS REQUIRED BY OTHER TRADES

A. Provide for attachment and support of electrical outlets, plumbing, laboratory or heating fixtures, recessed type plumbing fixture accessories, access panel frames, wall bumpers, wood seats, toilet stall partitions, dressing booth partitions, urinal screens, chalkboards, tackboards, wall-hung casework, handrail brackets, recessed fire extinguisher cabinets and other items like auto door buttons and auto door operators supported by stud construction.

B. Provide additional studs where required. Install metal backing plates, or special metal shapes as required, securely fastened to metal studs.

C. Coordinate mounting height, location, and coverage with item to be supported.

D. Determine material width according to item to be supported.

E. Provide in-wall metal wall backing material to interior metal stud walls specified herein and Exterior stud walls specified in Section 05 40 00.

F. Attachment: Minimum 2 - #10 sheet metal screws at each stud.

3.4 INSTALLING SHAFT WALL SYSTEM

A. Conform to UL Design No. V473 U438 for two-hour fire rating.

B. Position J runners at floor and ceiling with the short leg toward finish side of wall. Securely attach runners to structural supports with power driven fasteners at both ends and 600 mm (24 inches) on center.

C. After liner panels have been erected, cut C-H studs and E studs, from 9 mm (3/8-inch) to not more than 13 mm (1/2-inch) less than floor-to-ceiling height. Install C-H studs between liner panels with liner panels inserted in the groove.

D. Install full-length steel E studs over shaft wall line at intersections, corners, hinged door jambs, columns, and both sides of closure panels.

E. Suitably frame all openings to maintain structural support for wall:

1. Provide necessary liner fillers and shims to conform to label frame requirements.

2. Frame openings cut within a liner panel with E studs around perimeter.

3. Frame openings with vertical E studs at jambs, horizontal J runner at head and sill.

F. Elevator Shafts:

1. Frame elevator door frames with 0.87 mm (0.0341-inch) thick J strut or J stud jambs having 75 mm (three-inch) long legs on the shaft side.

2. Protrusions including fasteners other than flange of shaft wall framing system or offsets from vertical alignments more than 3 mm (1/8-inch) are not permitted unless shown.

3. Align shaft walls for plumb vertical flush alignment from top to bottom of shaft.

3.5 INSTALLING FURRED AND SUSPENDED CEILINGS OR SOFFITS

A. Install furred and suspended ceilings or soffits in accordance with ASTM C754 or ASTM C841 except as otherwise specified or shown for screw attached gypsum board ceilings and for plaster ceilings or soffits.

1. Space framing at 400 mm (16-inch) centers for metal lath anchorage.

2. Space framing at 600 mm (24-inch) centers for gypsum board anchorage.

B. New exposed concrete slabs:

1. Use metal inserts required for attachment and support of hangers or hanger wires with tied wire loops for embedding in concrete.

2. Furnish for installation under Division 3, CONCRETE.

3. Suspended ceilings under concrete rib construction shall have runner channels at right angles to ribs and be supported from ribs with hangers at ends and at 1200 mm (48-inch) maximum intervals along channels. Stagger hangers at alternate channels.

C. Concrete slabs on steel decking composite construction:

09 22 16 - 9

1. Use pull down tabs when available.

2. Use power activated fasteners when direct attachment to structural framing can not be accomplished.

D. Where bar joists or beams are more than 1200 mm (48 inches) apart, provide intermediate hangers so that spacing between supports does not exceed 1200 mm (48 inches). Use clips, bolts, or wire ties for direct attachment to steel framing.

E. Steel decking without concrete topping:

1. Do not fasten to steel decking 0.76 mm (0.0299-inch) or thinner.

2. Toggle bolt to decking 0.9 mm (0.0359-inch) or thicker only where anchorage to steel framing is not possible.

F. Installing suspended ceiling system for gypsum board (ASTM C635 Option):

1. Install only for ceilings to receive screw attached gypsum board.

2. Install in accordance with ASTM C636.

a. Install main runners spaced 1200 mm (48 inches) on center.

b. Install 1200 mm (four foot) tees not over 600 mm (24 inches) on center; locate for edge support of gypsum board.

c. Install wall track channel at perimeter.

G. Installing Ceiling Bracing System:

1. Construct bracing of 38 mm (1-1/2 inch) channels for lengths up to 2400 mm (8 feet) and

50 mm (2 inch) channels for lengths over 2400 mm (8 feet) with ends bent to form surfaces for anchorage to carrying channels and over head construction. Lap channels not less than 600 mm (2 feet) at midpoint back to back. Screw or bolt lap together with two fasteners.

2. Install bracing at an approximate 45 degree angle to carrying channels and structure overhead; secure as specified to structure overhead with two fasteners and to carrying channels with two fasteners or wire ties.

3. Brace suspended ceiling or soffit framing in seismic areas in accordance with ASTM E580.

3.6 TOLERANCES

A. Fastening surface for application of subsequent materials shall not vary more than 3 mm (1/8-inch) from the layout line.

B. Plumb and align vertical members within 3 mm (1/8-inch.)

C. Level or align ceilings within 3 mm (1/8-inch.)

Gypsum Board

09 29 00 - 1

SECTION 09 29 00

GYPSUM BOARD

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies installation and finishing of gypsum board.

1.2 RELATED WORK

A. Installation of steel framing members for walls, partitions, furring, soffits, and ceilings: Section 05 40 00, COLD-FORMED METAL FRAMING, and Section 09 22 16, NON-STRUCTURAL

METAL FRAMING.

B. Sound deadening board: Section 07 21 13, THERMAL INSULATION.

C. Acoustical Sealants: Section 07 92 00, JOINT SEALANTS.

D. Lay in gypsum board ceiling panels: Section 09 51 00, ACOUSTICAL CEILING.

1.3 TERMINOLOGY

A. Definitions and description of terms shall be in accordance with ASTM C11, C840, and as specified.

B. Underside of Structure Overhead: In spaces where steel trusses or bar joists are shown, the underside of structure overhead shall be the underside of the floor or roof construction supported by the trusses or bar joists.

C. "Yoked": Gypsum board cut out for opening with no joint at the opening (along door jamb or above the door).

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Manufacturer's Literature and Data:

1. Cornerbead and edge trim.

2. Finishing materials.

3. Laminating adhesive.

4. Gypsum board, each type.

C. Shop Drawings:

1. Typical gypsum board installation, showing corner details, edge trim details and the like.

2. Typical sound rated assembly, showing treatment at perimeter of partitions and penetrations at gypsum board.

3. Typical shaft wall assembly.

4. Typical fire rated assembly and column fireproofing, indicating details of construction same as that used in fire rating test.

D. Samples:

1. Cornerbead.

2. Edge trim.

3. Control joints.

E. Test Results:

1. Fire rating test, each fire rating required for each assembly.

2. Sound rating test.

09 29 00 - 2

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

1.5 DELIVERY, IDENTIFICATION, HANDLING AND STORAGE

A. In accordance with the requirements of ASTM C840.

1.6 ENVIRONMENTAL CONDITIONS

A. In accordance with the requirements of ASTM C840.

1.7 APPLICABLE PUBLICATIONS

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

B. American Society for Testing And Materials (ASTM):

C11-15 ................................... Terminology Relating to Gypsum and Related Building Materials and Systems

C475-15 ................................. Joint Compound and Joint Tape for Finishing Gypsum Board

C840-13 ................................. Application and Finishing of Gypsum Board

C919-12 ................................. Sealants in Acoustical Applications

C954-15 ................................. Steel Drill Screws for the Application of Gypsum Board or Metal Plaster Bases to Steel Stud from 0.033 in. (0.84mm) to 0.112 in.

(2.84mm) in thickness

C1002-14 ............................... Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs

C1047-14 ............................... Accessories for Gypsum Wallboard and Gypsum Veneer Base

C1177-13 ............................... Glass Mat Gypsum Substrate for Use as Sheathing

C1178/C1178M-18 ................ Specification for Coated Glass Mat Water Resistant Backing Panel

C1658-13 ............................... Glass Mat Gypsum Panels

C1396-14 ............................... Gypsum Board

C1629 .................................... Abuse-Resistant Non-decorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels.

D3273 .................................... Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber.

E84 ........................................ Surface-Burning Characteristics of Building Materials.

E90 ........................................ Sound Transmission Testing.

E119 ...................................... Fire Tests of Building Construction.

E413 ...................................... Classification for Rating Sound Insulation

C. Underwriters Laboratories Inc. (UL):

Latest Edition......................... Fire Resistance Directory

D. Inchcape Testing Services (ITS):

Latest Editions ....................... Certification Listings

E. Gypsum Association (GA):

1. GA-216 Application and Finishing of Gypsum Panel Products.

09 29 00 - 3

2. GA-234 Control Joints for Fire-Resistance Rated Systems.

3. GA-238 Guidelines for Prevention of Mold Growth on Gypsum Board.

F. Fire Resistant Rated Assemblies:

1. For fire resistance rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E119 by an independent testing agency.

2. Provide materials listed by UL, or other approved testing laboratory, for construction and rating type indicated.

G. STC Rated Assemblies:

1. Provide materials and construction identical to those tested in assembly indicated according to ASTM E90 and classified according to ASTM E413 by an independent testing agency.

2. Facility Guidelines Institute (FGI):

a. FGI Guidelines for Design and Construction of Healthcare Facilities:

1) Sound and Vibration Requirements.

3. American National Standards Institute (ANSI):

a. S1.1 American National Standard Acoustical Terminology.

b. S1.4 American National Standard Specification for Sound Level Meters.

c. S1.4 American National Standard Specification for Sound Level Meters.

d. S1.43 American National Standard Specifications for Integrating-Averaging Sound

Level Meters.

4. ASTM International (ASTM):

a. C423 Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method.

b. C634 Standard Terminology Relating to Building and Environmental Acoustics.

c. C840 Standard Specification for Application and Finishing of Gypsum Board.

d. E90 Standard Test Method for Laboratory Measurement of Airborne Sound

Transmission Loss of Building Partitions and Elements.

e. E336 Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings.

f. E413 Classification for Rating Sound Insulation.

g. E966 Standard Guide for Field Measurements of Airborne Sound Insulation of

Building Facades and Façade Elements.

5. American Society of Heating Refrigerating and Air-Conditioning Engineers (ASHRAE):

a. ASHRAE Handbook: Sound and Vibration Control.

6. South Coast Air Management District (SCAQMD):

a. SCAQMD Rule 1113 Architectural Coatings.

b. SCAQMD Rule 1168 - Adhesive and Sealant Applications.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Furnish in maximum available lengths, consistent with installation requirements.

1. Long Edge: Tapered.

2. Short Ends: Square.

B. Upgrade listed types to fire rated equivalent products when used in fire rated assemblies.

C. Provide listed GWB products to mold and moisture resistant types, where wallboard is installed in Electrical, Communication Rooms, Mechanical shafts, Stair Shafts and similar locations where wallboard is installed prior to building being weathertight.

D. Framing and suspension systems for Gypsum Board Ceilings: Specified in Section 09 22 16.

09 29 00 - 4

E. Firestopping: Specified in Section 07 84 00.

F. Thermal and Acoustic Insulation: Specified in Section 07 21 13.

G. Paper facings shall contain 100 percent post-consumer recycled paper content.

2.2 GYPSUM BOARD

A. Gypsum Board:

1. ASTM C1396.

2. Thickness: 16 mm (5/8 inch) thick unless shown otherwise.

3. Type X core

B. Shaftwall Liner Panel, Fire rated:

1. Panel size: 1 IN x 24 IN 25 MM x 610 MM wide.

2. Type X core.

3. Mold and moisture resistant:

4. Mold resistance score: 10 per ASTM D3273.

5. Fiberglass coated glass mats, both faces per ASTM C1658.

C. Acoustically Enhanced Gypsum Wallboard (AEGWB):

1. Two-ply high density, mold resistant, paper faced gypsum wallboard laminated together with viscoelastic dampening polymer.

2. Composite Thickness: 5/8 IN 15 MM.

3. Fire resistant, Type X gypsum core.

a. ASTM C1396.

b. Products which do not include a Type X core may be used in partitions that do not have a fire resistance requirement.

D. Interior face of exterior walls and rooms where moisture or high humidity is present:

1. Mold and moisture resistant gypsum panels (MRGWB).

2. Gypsum panels, with glass mat facer per ASTM C1658.

3. Thickness: 5/8 IN 15 MM.

4. Mold resistance score: 10 per ASTM D3273.

5. Apply continuously to interior face of exterior stud walls prior to framing interior partitions and ceilings.

6. Where MR wallboard is scheduled in fire rated walls, provide approved fire resistive products with comparable moisture resistance.

E. Tile Backer Board (TBB):

1. Moisture resistant treated gypsum core, glass mats on both sides, and acrylic water barrier or water resistant gypsum coating on finished side.

2. Provide TBB at walls of showers, tub rooms, toilet rooms, decontamination rooms, and similar walls where tile is scheduled.

3. Thickness: 1/2 IN 12.5 MM.

4. Thickness: 5/8 IN 15 MM type X at rated walls.

5. Mold resistance score: 10 per ASTM D3273.

6. Include Level 5 finish at non-tiled portions.

F. Abuse Resistant Gypsum Wallboard (ARGWB):

1. Thickness: 5/8 IN.

2. Type X core.

3. Tested in accordance with ASTM C1629.

4. Surface Abrasion: Level 2.

5. Surface Indentation: Level 1.

6. Soft Body Impact: Level 1.

7. Upgrade metal studs to 30 MILS (20 GA) minimum where used with ARGWB.

G. Impact Resistant Gypsum Wallboard (IRGWB):

1. Thickness: 5/8 IN 15 MM.

2. Type X core.

09 29 00 - 5

3. Mold resistance score: 10 per ASTM D3273.

4. Tested in accordance with ASTM C1629.

5. Soft Body Impact: Level 2, minimum.

6. Hard Body Impact: Level 2, minimum.

7. Upgrade metal studs to 30 MILS (20 GA) minimum where used with IRGWB.

8. Base product, glass mat facer – ASTM C1658

2.3 GYPSUM SHEATHING BOARD

A. ASTM C1396, Type X, water-resistant core, 16 mm (5/8 inch) thick.

B. ASTM C1177, Type X.

2.4 ACCESSORIES

A. ASTM C1047, except form of 0.39 mm (0.015 inch) thick zinc coated steel sheet or rigid PVC plastic.

B. Flanges not less than 22 mm (7/8 inch) wide with punchouts or deformations as required to provide compound bond.

2.5 FASTENERS

A. ASTM C1002 and ASTM C840, except as otherwise specified.

B. ASTM C954, for steel studs thicker than 0.04 mm (0.33 inch).

C. Select screws of size and type recommended by the manufacturer of the material being fastened.

D. For fire rated construction, type and size same as used in fire rating test.

E. Clips: Zinc-coated (galvanized) steel; gypsum board manufacturer's standard items.

2.6 FINISHING MATERIALS AND LAMINATING ADHESIVE

A. ASTM C475 and ASTM C840. Free of antifreeze, vinyl adhesives, preservatives, biocides and other VOC. Adhesive shall contain a maximum VOC content of 50 g/l.

B. Manufacturer's recommended type for use with selected materials, mildew resistant, non-staining type, and with a VOC content of 50 g/L or less.

C. Adhesives shall contain no carcinogen or reproductive toxicant components present at more than 1 PCT of total mass of the product as defined in the California Office of Environmental Health Hazard Assessment’s (OEHHA) list entitled Chemicals Known to the State to Cause Cancer or the Reproductive Toxicity, Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65).

D. Backing for Control Joints:

1. Fire rated board.

E. Backing for control joints:

1. Firestopping.

F. Support straps:

1. Galvanized steel sheet for retaining and bracing in length and width indicated or as required for adequate support of assembly.

2. Minimum Base-Metal Thickness: 30 MILS (20 gauge).

G. Sealer for Moisture Resistant Gypsum Wallboard:

1. Manufacturer's standard compound.

2. Use at joints, cut edges and screw penetrations.

09 29 00 - 6

PART 3 - EXECUTION

3.1 GYPSUM BOARD HEIGHTS

A. Extend all layers of gypsum board from floor to underside of structure overhead on following partitions and furring:

a. All Walls, unless noted otherwise.

2. One side of partitions or furring:

a. Furring for…