S02 SOL 0004 AttI.2 SPECS_FINAL 585-21-115_01AUG24 VOL 2 of 3_.pdf

REPLACE BOILER PLANT 100% BID SET

OSCAR G. JOHNSON VAMC - IRON MOUNTAIN, MI 02/23/2024

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 testing concrete for moisture and pH, remedial floor coating for concrete floor slabs having unsatisfactory moisture or pH conditions, and floor leveling and repair as required.

1.2 RELATED WORK

A. Section 07 92 00, JOINT SEALANTS.

B. Section 09 67 23.20, RESINOUS EPOXY BASE WITH VINYL CHIP BROADCAST

(RES-2) Section 09 67 23 60, RESINOUS (Urethane and Epoxy Mortar)

FLOORING.

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.

09 05 16 - 2

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. or

[50-mm] Cube Specimens

7234-19(2020)...........Standard Test Method for Pull-Off Adhesion

Strength of Coatings on Concrete Using Portable

Pull-Off Adhesion Testers

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

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

09 05 16 - 3 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.

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 - 4

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.

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 moisture insensitive tile in 6 hours, floor coverings in 16 hours, and resinous flooring in 3-7 days.

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.

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

e. Number of Coats: (1) one.

2. Grout Resurfacing Base:

09 05 16 - 5

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.

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.

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.

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 - 6

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 - 7

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 CEMENTITOUS 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, address non-moving cracks or joints, 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.

- - - E N D - - -

09 22 16 - 1

SECTION 09 22 16

NON-STRUCTURAL METAL FRAMING

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. Pull down tabs in steel decking: Section 05 36 00, COMPOSITE METAL

DECKING.

D. Ceiling suspension systems for acoustical tile or panels and lay in gypsum board panels: Section 09 51 00, ACOUSTICAL CEILINGS, 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.

09 22 16 - 2

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

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.

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.

09 22 16 - 3

PART 2 - PRODUCTS

2.1 PROTECTIVE COATING

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).

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. Deleted.

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

09 22 16 - 4

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.

H. Power Actuated Fasteners: Type and size as recommended by the manufacturer of the material being fastened.

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)

09 22 16 - 5 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.

F. Deleted.

G. 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.

H. 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. Do not fasten studs to top runner track when studs extend to underside of structure overhead.

I. 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).

J. 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.

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

09 22 16 - 6

3.3 INSTALLING WALL FURRING FOR FINISH APPLIED TO ONE SIDE ONLY

A. In accordance with ASTM C754, or ASTM C841 except as otherwise specified or shown.

B. 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.

C. 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.

D. Installing Wall Furring Bracket System: Space furring channels not more than 400 mm (16 inches) on center.

3.4 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.

09 22 16 - 7

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

3.5 INSTALLING SHAFT WALL SYSTEM

A. Conform to UL Design No. 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 fulll ength 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.

3.6 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.

09 22 16 - 8

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:

1. Use pull down tabs when available.

2. Use power activated fasteners when direct attachment to structural framing cannot 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.

F. 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.

G. 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.

H. 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

09 22 16 - 9 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.

3.7 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.)

09 29 00 - 1

SECTION 09 29 00

GYPSUM BOARD

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. Deleted.

E. Deleted.

F. 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.

09 29 00 - 2

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.

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

In accordance with the requirements of ASTM C840.

1.6 ENVIRONMENTAL CONDITIONS

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

09 29 00 - 3

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

Resistant Backing Panel

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

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

C. Underwriters Laboratories Inc. (UL):

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

D. Inchcape Testing Services (ITS):

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

PART 2 - PRODUCTS

2.1 GYPSUM BOARD

A. Gypsum Board: ASTM C1396, Type X, 16 mm (5/8 inch) thick unless shown otherwise.

B. Coreboard or Shaft Wall Liner Panels.

1. ASTM C1396, Type X.

2. ASTM C1658: Glass Mat Gypsum Panels,

3. Coreboard for shaft walls 300, 400, 600 mm (12, 16, or 24 inches) wide by required lengths 25 mm (one inch) thick with paper faces treated to resist moisture.

C. Water Resistant Gypsum Backing Board: ASTM C1178, Type X, 16 mm (5/8 inch) thick.

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

2.2 GYPSUM SHEATHING BOARD

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

B. ASTM C1177, Type X.

2.3 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.

2.4 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.

09 29 00 - 4

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

2.5 FINISHING MATERIALS AND LAMINATING ADHESIVE

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.

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:

1. Two sides of partitions:

a. Fire rated partitions.

b. Smoke partitions.

c. Sound rated partitions.

d. Full height partitions shown (FHP).

e. Corridor partitions.

2. One side of partitions or furring:

a. Inside of exterior wall furring or stud construction.

b. Room side of room without suspended ceilings.

c. Furring for pipes and duct shafts, except where fire rated shaft wall construction is shown.

3. Extend all layers of gypsum board construction used for fireproofing of columns from floor to underside of structure overhead, unless shown otherwise.

B. In locations other than those specified, extend gypsum board from floor to heights as follows:

1. Not less than 100 mm (4 inches) above suspended acoustical ceilings.

2. At ceiling of suspended gypsum board ceilings.

3. At existing ceilings.

3.2 INSTALLING GYPSUM BOARD

A. Coordinate installation of gypsum board with other trades and related work.

B. Install gypsum board in accordance with ASTM C840, except as otherwise specified.

C. Moisture and Mold–Resistant Assemblies: Provide and install moisture and mold-resistant glass mat gypsum wallboard products with moisture-resistant surfaces complying with ASTM C1658 where shown and in

09 29 00 - 5 locations which might be subject to moisture exposure during construction.

D. Use gypsum boards in maximum practical lengths to minimize number of end joints.

E. Bring gypsum board into contact, but do not force into place.

F. Ceilings:

1. For single-ply construction, use perpendicular application.

2. For two-ply assembles:

a. Use perpendicular application.

b. Apply face ply of gypsum board so that joints of face ply do not occur at joints of base ply with joints over framing members.

G. Walls (Except Shaft Walls):

1. When gypsum board is installed parallel to framing members, space fasteners 300 mm (12 inches) on center in field of the board, and

200 mm (8 inches) on center along edges.

2. When gypsum board is installed perpendicular to framing members, space fasteners 300 mm (12 inches) on center in field and along edges.

3. Stagger screws on abutting edges or ends.

4. For single-ply construction, apply gypsum board with long dimension either parallel or perpendicular to framing members as required to minimize number of joints except gypsum board shall be applied vertically over "Z" furring channels.

5. For two-ply gypsum board assemblies, apply base ply of gypsum board to assure minimum number of joints in face layer. Apply face ply of wallboard to base ply so that joints of face ply do not occur at joints of base ply with joints over framing members.

6. For three-ply gypsum board assemblies, apply plies in same manner as for two-ply assemblies, except that heads of fasteners need only be driven flush with surface for first and second plies. Apply third ply of wallboard in same manner as second ply of two-ply assembly, except use fasteners of sufficient length enough to have the same penetration into framing members as required for two-ply assemblies.

7. No offset in exposed face of walls and partitions will be permitted because of single-ply and two-ply or three-ply application requirements.

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8. Installing Two Layer Assembly Over Sound Deadening Board:

a. Apply face layer of wallboard vertically with joints staggered from joints in sound deadening board over framing members.

b. Fasten face layer with screw, of sufficient length to secure to framing, spaced 300 mm (12 inches) on center around perimeter, and 400 mm (16 inches) on center in the field.

9. Control Joints ASTM C840 and as follows:

a. Locate at both side jambs of openings if gypsum board is not

"yoked". Use one system throughout.

b. Not required for wall lengths less than 9000 mm (30 feet).

c. Extend control joints the full height of the wall or length of soffit/ceiling membrane.

H. Acoustical or Sound Rated Partitions, Fire and Smoke Partitions:

1. Cut gypsum board for a space approximately 3 mm to 6 mm (1/8 to 1/4 inch) wide around partition perimeter.

2. Coordinate for application of caulking or sealants to space prior to taping and finishing.

3. For sound rated partitions, use sealing compound (ASTM C919) to fill the annular spaces between all receptacle boxes and the partition finish material through which the boxes protrude to seal all holes and/or openings on the back and sides of the boxes. STC minimum values as shown.

I. Electrical and Telecommunications Boxes:

1. Seal annular spaces between electrical and telecommunications receptacle boxes and gypsum board partitions.

J. Accessories:

1. Set accessories plumb, level and true to line, neatly mitered at corners and intersections, and securely attach to supporting surfaces as specified.

2. Install in one piece, without the limits of the longest commercially available lengths.

3. Corner Beads:

a. Install at all vertical and horizontal external corners and where shown.

b. Use screws only. Do not use crimping tool.

4. Edge Trim (casings Beads):

a. At both sides of expansion and control joints unless shown otherwise.

09 29 00 - 7

b. Where gypsum board terminates against dissimilar materials and at perimeter of openings, except where covered by flanges, casings or permanently built-in equipment.

c. Where gypsum board surfaces of non-load bearing assemblies abut load bearing members.

d. Where shown.

3.3 INSTALLING GYPSUM SHEATHING

A. Install in accordance with ASTM C840, except as otherwise specified or shown.

B. Use screws of sufficient length to secure sheathing to framing.

C. Space screws 9 mm (3/8 inch) from ends and edges of sheathing and 200 mm (8 inches) on center. Space screws a maximum of 200 mm (8 inches) on center on intermediate framing members.

D. Apply 600 mm by 2400 mm (2 foot by 8 foot) sheathing boards horizontally with tongue edge up.

E. Apply 1200 mm by 2400 mm or 2700 mm (4 ft. by 8 ft. or 9 foot) gypsum sheathing boards vertically with edges over framing.

3.4 CAVITY SHAFT WALL: NOT USED

3.5 FINISHING OF GYPSUM BOARD

A. Finish joints, edges, corners, and fastener heads in accordance with

ASTM C840. Use Level 4 finish for al finished areas open to public view.

B. Before proceeding with installation of finishing materials, assure the following:

1. Gypsum board is fastened and held close to framing or furring.

2. Fastening heads in gypsum board are slightly below surface in dimple formed by driving tool.

C. Finish joints, fasteners, and all openings, including openings around penetrations, on that part of the gypsum board extending above suspended ceilings to seal surface of non decorated fire rated gypsum board construction. After the installation of hanger rods, hanger wires, supports, equipment, conduits, piping and similar work, seal remaining openings and maintain the integrity of the fire rated construction. Sanding is not required of non decorated surfaces.

3.6 REPAIRS

A. After taping and finishing has been completed, and before decoration, repair all damaged and defective work, including nondecorated surfaces.

09 29 00 - 8

B. Patch holes or openings 13 mm (1/2 inch) or less in diameter, or equivalent size, with a setting type finishing compound or patching plaster.

C. Repair holes or openings over 13 mm (1/2 inch) diameter, or equivalent size, with 16 mm (5/8 inch) thick gypsum board secured in such a manner as to provide solid substrate equivalent to undamaged surface.

D. Tape and refinish scratched, abraded or damaged finish surfaces including cracks and joints in non decorated surface to provide fire protection equivalent to the fire rated construction.

3.7 UNACCESSIBLE CEILINGS: NOT USED

09 30 13 - 1

SECTION 09 30 13

CERAMIC/PORCELAIN TILING

A. This section specifies interior ceramic, porcelain and quarry tile, waterproofing membranes for thin-set applications, crack isolation membranes, and tile backer board.

1.2 RELATED WORK

A. Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS: Sustainable

Design Requirements.

B. Section 07 92 00, JOINT SEALANTS: Sealing of Joints.

C. Section 07 95 13, EXPANSION JOINT COVER ASSEMBLIES: Preformed expansion joints in tile flooring.

D. Section 09 24 00, PORTLAND CEMENT PLASTERING: Cement Based Plaster.

E. Section 09 65 19, RESILIENT TILE FLOORING: Metal and Resilient Edge

Strips at Joints with New Resilient Flooring.

1.3 SUBMITTALS

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

DATA, AND SAMPLES.

B. Sustainable Design Submittals as described below:

1. Volatile organic compounds per volume as specified in PART

2 - PRODUCTS.

C. Samples:

1. Base tile, each type, each color, each size.

2. Mosaic floor tile panels, 228 by 228 mm (9 by 9 inches), each type, color, size and pattern.

3. Paver tile, each size, type, color and pattern.

4. Quarry tile, each type, color, and size.

5. Porcelain tile, each type, color, patterns and size.

6. Wall (or wainscot) tile, each color, size and pattern.

7. Trim shapes, bullnose cap and cove including bullnose cap and base pieces at internal and external corners of vertical surfaces, each type, color, and size.

8. Therapeutic pool tile, panels 305 mm (12 inches) square, each type, size, color, typical lettering and special shapes.

D. Product Data:

09 30 13 - 2

1. Ceramic and porcelain tile, marked to show each type, size, and shape required.

2. Chemical resistant mortar and grout (epoxy and furan).

3. Cementitious backer unit.

4. Dry-set portland cement mortar and grout.

5. Divider strip.

6. Elastomeric membrane and bond coat.

7. Reinforcing tape.

8. Leveling compound.

9. Latex-portland cement mortar and grout.

10. Commercial portland cement grout.

11. Organic adhesive.

12. Slip resistant tile.

13. Waterproofing isolation membrane.

14. Fasteners.

E. Certification:

1. Master grade certificate, ANSI A137.1.

2. Manufacturer's certificates indicating that the following materials comply with specification requirements:

a. Chemical resistant mortar and grout (epoxy and furan).

b. Modified epoxy emulsion.

c. Commercial portland cement grout.

d. Cementitious backer unit.

e. Dry-set portland cement mortar and grout.

f. Elastomeric membrane and bond coat.

g. Reinforcing tape.

h. Latex-portland cement mortar and grout.

i. Leveling compound.

j. Organic adhesive.

k. Waterproof isolation membrane.

l. Factory back mounted tile documentation for suitability for application in wet area.

F. Installer Qualifications:

1. Submit letter stating installer’s experience.

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.

09 30 13 - 3

1.5 QUALITY ASSURANCE

A. Installers to be from a company specializing in performing installation of products specified and have a minimum of three (3) years’ experience.

B. Each type and color of tile to be provided from a single source.

C. Each type and color of mortar, adhesive, and grout to be provided from the same source.

1.6 WARRANTY

A. Construction Warranty: Comply with FAR clause 52.246-21, “Warranty of

Construction”.

1.7 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. American National Standards Institute (ANSI):

A10.20-06(R2016)........Safe Operating Practices for Tile, Terrazzo and

Marble Work

A108/A118/A136.1:2019...Installation of Ceramic Tile

A108.01-18..............Subsurfaces and Preparations by Other Trades

A108.02-19..............Materials, Environmental, and Workmanship

A108.1A-17..............Installation of Ceramic Tile in the Wet-Set

Method with Portland Cement Mortar

A108.1B-17..............Installation of Ceramic Tile on a Cured

Portland Cement Mortar Setting Bed with Dry-Set or Latex-Portland Cement Mortar

A108.1C-17..............Contractors Option; Installation of Ceramic

Tile in the Wet-Set method with Portland Cement

Mortar or Installation of Ceramic Tile on a

Cured Portland Cement Mortar Setting Bed with

Dry-Set or Latex-Portland Cement Mortar

A108.4-09...............Ceramic Tile with Organic Adhesives or Water

Cleanable Tile-Setting Epoxy Adhesive

A108.5-10 ..............Ceramic Tile with Dry-Set Portland Cement

Mortar or Latex-Portland Cement Mortar

A108.6-10...............Ceramic Tile with Chemical Resistant, Water

Cleanable Tile-Setting and -Grouting Epoxy

A108.8-10...............Ceramic Tile with Chemical Resistant Furan

Resin Mortar and Grout

09 30 13 - 4

A108.9-10...............Ceramic Tile with Modified Epoxy Emulsion

Mortar/Grout

A108.10-17..............Grout in Tilework

A108.11-18..............Interior Installation of Cementitious Backer

Units

A108.12-10..............Installation of Ceramic Tile with EGP (Exterior

Glue Plywood) Latex-Portland Cement Mortar

A108.13-16..............Load Bearing, Bonded, Waterproof Membranes for

Thin-Set Ceramic Tile and Dimension Stone

A108.14-10..............Paper-Faced Glass Mosaic Tile

A108.15-19..............Alternate Method: Paper-Faced Glass Mosaic Tile

A108.17-16..............Crack Isolation Membranes for Thin-Set Ceramic

Tile and Dimension Stone

A118.1-19...............Dry-Set Portland Cement Mortar

A118.3-13...............Chemical Resistant, Water Cleanable Tile-

Setting and –Grouting Epoxy and Water Cleanable

Tile-Setting Epoxy Adhesive

A118.4-19...............Modified Dry-Set Cement Mortar

A118.5-16...............Chemical Resistant Furan Mortars and Grouts

A118.6-19...............Standard Cement Grouts for Tile Installation

A118.7-1................High Performance Cement Grouts for Tile

Installation

A118.8-16...............Modified Epoxy Emulsion Mortar/ Grout

A118.9-19...............Cementitious Backer Units

A118.10-14..............Load Bearing, Bonded, Waterproof Membranes for

Thin-Set Ceramic Tile and Dimension Stone

Installation

A118.11-17..............EGP (Exterior Glue Plywood) Modified Dry-set

Mortar

A118.12-14..............Crack Isolation Membranes for Thin-Set Ceramic

Tile and Dimension Stone Installation

A118.13-14..............Bonded Sound Reduction Membranes for Thin-Set

Ceramic Tile Installation

A118.15-19..............Improved Modified Dry-Set Cement Mortar

A136.1-13...............Organic Adhesives for Installation of Ceramic

Tile

A137.1-17...............American National Standard Specifications for

Ceramic Tile

09 30 13 - 5

C. ASTM International (ASTM):

A666-15.................Annealed or Cold-Worked Austenitic Stainless

Steel Sheet, Strip, Plate and Flat Bar

A1064/A1064M-18a........Carbon-Steel Wire and Welded Wire

Reinforcement, Plain and Deformed, for Concrete

C109/C109M-20b..........Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2 inch. or

[50-mm] Cube Specimens)

C241/C241M-15e1.........Abrasion Resistance of Stone Subjected to Foot

Traffic

C348-20.................Standard Test Method for Flexural Strength of

Hydraulic-Cement Mortars

C627-18.................Evaluating Ceramic Floor Tile Installation

Systems Using the Robinson-Type Floor Tester

C954-18.................Steel Drill Screws for the Application of

Gypsum Board on Metal Plaster Base to Steel

Studs from 0.033 in (0.84 mm) to 0.112 in (2.84

mm) in thickness

C979/C979M-16...........Pigments for Integrally Colored Concrete

C1002-18................Steel Self-Piercing Tapping Screws for the

Application of Panel Products

C1027-19................Test Method for Determining Visible Abrasion

Resistance of Glazed Ceramic Tile

C1127/C1127M-15.........Standard Guide for Use of High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing

Membrane with an Integral Wearing Surface

C1178/C1178M-18.........Standard Specification for Coated Glass Mat

Water-Resistant Gypsum Backing Panel

C1325-19................Non-Asbestos Fiber-Mat Reinforced Cementitious

Backer Units

C1353/C1353M-20e1.......Abrasion Resistance of Dimension Stone

Subjected to Foot Traffic Using a Rotary

Platform, Double-Head Abraser

D1204-14(2020)..........Test Method for Linear Dimensional Changes of

Nonrigid Thermoplastic Sheeting or Film at

Elevated Temperature

D2240-15e1..............Test Method for Rubber Property – Durometer

Hardness

09 30 13 - 6

D2497-07(2018)..........Tolerances for Manufactured Organic-Base

Filament Single Yarns

D3045-2018..............Heat Aging of Plastics Without Load

D4397-16................Standard Specification for Polyethylene

Sheeting for Construction, Industrial and

Agricultural Applications

D5109-12(Withdrawn2020).Standard Test Methods for Copper-Clad

Thermosetting Laminates for Printed Wiring

Boards (recommend deletion)

D. Code of Federal Regulation (CFR):

40 CFR 59...............Determination of Volatile Matter Content, Water

Content, Density Volume Solids, and Weight

Solids of Surface Coating

E. Marble Institute of America (MIA)/ Building Stone Institute (BSI):

Dimension Stone Design Manual VIII-2016

F. Tile Council of North America, Inc. (TCNA):

Handbook for Ceramic Tile Installation (2020)G. TCNA DCOF AcuTest-

2012,Dynamic Coefficient of Friction Test

PART 2 - PRODUCTS

2.1 TILE

A. Comply with ANSI A137.1, Standard Grade, except as modified:

1. Inspection procedures listed under the Appendix of ANSI A137.1.

2. Abrasion Resistance Classification:

a. Tested in accordance with values listed in Table 1, ASTM C1027.

b. Class V, 12000 revolutions for floors in Corridors, Kitchens, Storage including Refrigerated Rooms

c. Class IV, 6000 revolutions for remaining areas.

3. Slip Resistant Tile for Floors:

a. Coefficient of friction, when tested in accordance with

ANSI A137.1 and measured per the TCNA DCOF AcuTest.

1) Equal to or greater than .42 for level interior tile floors that will be walked on when wet.

b. Tile Having Abrasive Grains:

1) Unglazed Ceramic Mosaic Tile: Abrasive grains throughout body of the tile.

2) Quarry Tile: Abrasive grains uniformly embedded in face at rate of approximately 7.5 percent of surface area.

09 30 13 - 7

c. Porcelain Paver Tile: Matte surface finish with raised ridges spaced uniformly over tile surface.

4. Mosaic tile may be mounted or joined by a resinous bonding material along tile edges.

5. Back mounted tiles in showers. Provide certification that the factory mounted tile has been used successfully in service at three

(3) projects and is suitable for wet locations.

6. Factory Blending: For tile with color variations, within the ranges selected during sample submittals blend tile in the factory and package so tile…