Part 2 of 3 from Combined Specification (Draft).pdf

Improves Site Access and Physical Security Deficiencies

VA Central California Healthcare System, Fresno, CA

VA Project Number: 570-19-107

Subsurface Preparation for Floor Finishes

Section 09 05 16 - 1 03/17/2023

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

B. 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, and floor leveling and repair as required.

1.2 RELATED WORK

A. Section 07 92 00, JOINT SEALANTS.

B. Section 09 68 00, CARPETING.

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):

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

VHAHONMurraP Draft

Section 09 05 16 - 2 on Concrete Using Portable Pull-Off Adhesion Testers

E96/E96M-16(2016) ................... Standard Test Methods for Water Vapor Transmission of

Materials

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 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

Section 09 05 16 - 3

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 25 mm (1 inch), per application. Applications greater than 25 mm (1 inch) require additional 9 mm (3/8 inch)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.

Property Test Value

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; 24-hr recoat window

Bond Strength ASTM D7234 100% bond to concrete failure

Section 09 05 16 - 4

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

e. 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, 25 mm (1 inch) lifts.

2) Number of Coats: More than one (1) if needed.

c. Aggregates: for applications greater than 1inch, require additional 9 mm (3/8 inch) 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.

PART 3 - EXECUTION

3.1 ENVIRONMENTAL REQUIREMENTS

A. Maintain ambient temperature of work areas at not less than 16 degrees 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 16-30 degrees C (60-85 degrees F).

3.2 SURFACE PREPARATION

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

Section 09 05 16 - 5

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. Prepare slab as required 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 F1869. 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 3 mm (1/4 inch) deviation in 3 m (10 feet). As required, install underlayment to achieve required tolerance.

Section 09 05 16 - 6

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 - - -

Schedule for Finishes Section 09 06 00 - i

SECTION 09 06 00

SCHEDULE FOR FINISHES

SECTION 09 06 00-SCHEDULE FOR FINISHES

VAMC: VA CENTRAL CALIFORNIA HEALTH CARE SYSTEM

Location: Fresno, California

Project No. and Name: PROJECT #570-19-107 “DESIGN FOR SITE ACCESS AND PHYSICAL SECURITY”

Submission: Bid Set Submittal

Date: October 31, 2022

Section 09 06 00 - 2

SECTION 09 06 00

SCHEDULE FOR FINISHES

A. This section contains a coordinated system in which requirements for materials specified in other sections shown are identified by abbreviated material names and finish codes in the room finish schedule or shown for other locations.

1.2 MANUFACTURERS

A. Manufacturer’s trade names and numbers used herein are only to identify colors, finishes, textures, and patterns. Products of other manufacturer’s equivalent to colors, finishes, textures, and patterns of manufacturers listed that meet requirements of technical specifications will be acceptable upon approval in writing by Contracting Officer for finish requirements.

1.3 SUBMITALS

A. Submit in accordance with SECTION 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES provide quadruplicate samples for color approval of materials and finishes specified in this section.

1. DIGITAL COLOR PHOTOS-INTERIOR VIEWS:

Room Number and Name Item/View to be Photographed

1.4 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. MASTER PAINTING INSTITUTE: (MPI)

Section 09 06 00 - 3

6/1/2019 ..................................... Architectural Painting Specification Manual

PART 2 - PRODUCTS

2.1 DIGITAL COLOR PHOTOS

A. Size 24 x 35 mm.

B. Labeled for:

1. Building name and Number.

2. Room Name and Number.

2.2 DIVISION 03 – CONCRETE

A. SECTION 03 45 00, PRECAST ARCHITECTURAL CONCRETE

Finish Code Texture Finish Manufacturer Mfg. Color Name/No.

E-4 Smooth Pyramidal cap, form finish

Arco Concrete, Inc. #8084, Light Gray (Carbon)

2.3 DIVISON 04 – MASONRY

A. SECTION 04 05 13, MASONRY MORTARING and Section 04 05 16, MASONRY GROUTING

Finish Code Manufacturer Mfg. Color Name

E-3 Interstar CM-717 Ivory, Smooth texture

B. SECTION 04 20 00, UNIT MASONRY

1. FACE BRICK (FB)

Finish Code Size Pattern Manufacturer Mfg. Color Name/No.

E-2 Per Drawings Per Drawings Metro Brick Fast Ship Blends-Blend 6 Mix (Red, Brown, Orange)

Section 09 06 00 - 4

2.4 DIVISION 08 - OPENINGS

A. SECTION 08 11 13, HOLLOW METAL DOORS AND FRAMES

Finish Code Component Manufacturer Type Color of Paint Type and Gloss

W-3 Door Match existing Match existing Match existing

5 (Semi-gloss)

W-3 Frame Match existing Match existing Match existing

5 (Semi-gloss)

B. SECTION 08 14 00, INTERIOR WOOD DOORS

Component Finish/Color

Doors Stained, Match existing

C. SECTION 08 31 13, ACCESS DOORS AND FRAMES

Material Finish/Color

Stainless steel #4 Brushed

2.5 DIVISION 09 - FINISHES

A. SECTION 09 29 00, GYPSUM BOARD

Finish code Material Manufacturer Sheen Type Mfg. Color Name/No.

W-1 Paint, Field Dunn-Edwards Spartawall

(3) Eggshell Wall DE 6218, ‘Antique Paper’

W-2 Paint, Field Dunn-Edwards Spartawall

(3) Eggshell Wall DE T594, ‘Yreka’

W-4 Paint, Field Dunn-Edwards Spartawall

(5) Semi-gloss Moisture resistant, Epoxy, Ceiling/wall

DE 6218, ‘Antique Paper’

Section 09 06 00 - 5

C-2 Paint, Ceiling Dunn-Edwards Spartawall

(5) Semi-gloss Epoxy DEW 359, ‘Milk Glass’

B. SECTION 09 30 13, CERAMIC/PORCELAIN TILING

1. SECTION 09 30 13, CERAMIC/PORCELAIN TILING

Finish Code Size Shape Pattern Manufacturer Mfg. Color Name/No.

W-5 12” x 24” Rectangle Wall Tile, Field, Modern Textile

Dal Tile MT 52, ‘Taupe’

W-6 3” x 6” x 5/16”T Rectangle Wall Tile, Accent, Glass Tile/Mosaic

Dal Tile CW 07, ‘Casual Tan’

B-2 6”H x 12”L Rectangle P-36C9T Cove Base

Dal Tile MT 52, ‘Taupe’

A-6 1” x 6” Trim Modern Textile, #PC 36C9TB

Dal Tile MT 52, ‘Taupe’

A-7 3” x 12”, Bullnose for 6” side

Trim Modern Textile, Dal Tile MT 52, ‘Taupe’

2. SECTION 09 30 13, CERAMIC/PORCELAIN TILING GROUT

Finish Code Manufacturer Mfg. Color Name/No.

W-5 Mapei # 11, ‘Sahara Beige’

W-6 Mapei # 11, ‘Sahara Beige’

B-2 Mapei # 11, ‘Sahara Beige’

Section 09 06 00 - 6

3. SECTION 09 30 13, CERAMIC/PORCELAIN TILING, PORCELAIN PAVER TILE (PPT)

Finish Code Size Shape Pattern Manufacturer Mfg. Color Name/No.

F-2 12” x 24” Rectangle Modern Textile Dal Tile MT 52 Taupe

4. SECTION 09 30 13, CERAMIC/PORCELAIN TILING, PORCELAIN PAVER TILE GROUT

Finish Code Manufacturer Mfg. Color Name/No.

F-2 Mapei # 11, ‘Sahara Beige’

5. SECTION 09 30 13, [CERAMIC/PORCELAIN TILING] MARBLE THRESHOLDS

Finish Code Manufacturer Type Mfg. Color Name/No. Size Note

A-5 Dal Tile M70143634SHB1L M701 White Carrara 4” wide, ¾” thick Single Hollywood bevel, Carpet to Porcelain Tile

A. SECTION 09 51 00, ACOUSTICAL CEILINGS

Finish Code Component Color Pattern Manufacturer Mfg Name/No.

C-1 Exposed Suspension System

White, 15/16” grid width Match existing Match existing

C-1 Type III, Form 2, 24” x 24” x 5/8”

Match facility standard Match existing Match existing

B. SECTION 09 65 13, RESILIENT BASE AND ACCESSORIES

Finish Code Item Height Manufacturer Mfg Name/No.

B-1 Rubber Base (RB) 4”, Coved Tarkett BWC 20, ‘Charcoal’

Section 09 06 00 - 7

C. SECTION 09 68 00, CARPETING, CARPET MODULES (CFT)

Finish Code Item Size Pattern Manufacturer Mfg. Color Name/No.

F-1 500 x 500 mm

(19.6 x 19.6 inches)

Common Theme CT101, #146250250H

Interface 103976 Steel

A-4 Rubber Transition Strip ¼” transition. See drawings, Sheet AF-101.

‘T’ moulding, CC-XX-C

Tarkett BWC, ‘Charcoal’

D. SECTION 09 67 23.30, RESINOUS (EPOXY BASE) HIGH PERFORMANCE DECORATIVE MORTAR FLOORING(RES-3)

Finish code Manufacturer Mfg. Color Name/No.

F-3 Stonhard System: ‘QBT’. Color: TBD

F-3 (Integral base) Stonhard System: ‘QBT’. Color: TBD

E. SECTION 09 91 00, PAINTING

1. MPI Gloss and Sheen Standards

Gloss @60 Sheen @85

Gloss Level 1 a traditional matte finish-flat max 5 units, and max 10 units

Gloss Level 2 a high side sheen flat-“a velvet-like” finish max 10 units, and 10-35 units

Gloss Level 3 a traditional “egg-shell like” finish 10-25 units, and 10-35 units

Gloss Level 4 a “satin-like” finish 20-35 units, and min. 35 units

Gloss Level 5 a traditional semi-gloss 35-70 units

Gloss Level 6a traditional gloss 70-85 units

Gloss level 7 a high gloss more than 85 units

2. Paint code Gloss Manufacturer Mfg. Color Name/No.

W-1 3 (Eggshell) Dunn-Edwards DE6218, ‘Antique Paper’

Section 09 06 00 - 8

W-2 3 (Eggshell) Dunn-Edwards DET594, ‘Yreka’

W-3 Match existing Match existing Match existing

W-4 5 (Semi-gloss) Epoxy Dunn-Edwards DE6218, ‘Antique Paper’

2.6 DIVISION 10 - SPECIALTIES

A. SECTION 10 26 00, WALL AND DOOR PROTECTION

Finish Code Item Material Manufacturer Mfg. Color Name/No.

A-1 Corner Guards Stainless steel. Size to match facility standard

Construction Specialties, CO- Series

410 Brushed Silver

2.7 DIVISION 12- FURNISHINGS

A. SECTION 12 32 00, MANUFACTURED PLASTIC LAMINATE CLAD WOOD CASEWORK

Finish Code Material Manufacturer Type Color Note

A-3

Casework, Plastic Laminate

WilsonArt

Premium Laminate

4877-38, ‘Grey Mesh’

A-8

Custom Casework/ Reception Desk

Laminate Finish, Countertop

Admin Room #1A18A –

See cabinet details

B. SECTION 12 36 00, COUNTERTOPS

Finish Code Type Manufacturer Finish/Color

A-2 Methyl Methacrylate Solid Surface WilsonArt 9220CE, ‘Tumbled’

Section 09 06 00 - 9

Section 09 06 00 - 10

2.15 DIVISION 22 - PLUMBING

A. SECTION 22 40 00, PLUMBING FIXTURES

Item Color

Water Closet White

Kitchenette Sink Stainless steel

Lavatories White

2.16 DIVISION 32 – EXTERIOR IMPROVEMENTS

A. SECTION 32 31 40, HIGH SECURITY FENCES AND GATES

Finish Code Finish Pickets, Posts, and Rails Model Manufacturer Mfg. Color Name/No.

E-1 Factory paint Montage II, Classic style Picket.

Permanent Fence, Gate to match picket style and color. 6 feet high.

Ameristar Black

E-1A Factory paint Montage II, Classic style Picket.

Semi-permanent Fence, Rackable or Stairstep. Gate to match picket style and color. 8 feet high.

Ameristar Black

PART 3 - EXECUTION

3.1 FINISH SCHEDULES & MISCELLANEOUS ABBREVIATIONS

FINISH SCHEDULE & MISCELLANEOUS ABBREVIATIONS

Term Abbreviation

Access Flooring AF

Accordion Folding Partition AFP

Acoustical Ceiling AT

Acoustical Ceiling, Special

Faced

AT (SP)

Section 09 06 00 - 11

Acoustical Metal Pan Ceiling AMP

Acoustical Wall Panel AWP

Acoustical Wall Treatment AWT

Acoustical Wallcovering AWF

Anodized Aluminum Colored AAC

Anodized Aluminum Natural

Finish

AA

Baked On Enamel BE

Brick Face BR

Brick Flooring BF

Brick Paving BP

Carpet CP

Carpet Athletic Flooring CAF

Carpet Module Tile CPT

Ceramic Glazed Facing Brick CGFB

Ceramic Mosaic Tile FTCT

Concrete C

Concrete Masonry Unit CMU

Divider Strips Marble DS MB

Epoxy Coating EC

Epoxy Resin Flooring ERF

Existing E

Exposed Divider Strips EXP

Exterior EXT

Exterior Finish System EFS

Exterior Paint EXT-P

Exterior Stain EXT-ST

Fabric Wallcovering WF

Facing Tile SCT

Feature Strips FS

Floor Mats & Frames FM

Floor Tile, Mosaic FT

Fluorocarbon FC

Folding Panel Partition FP

Foot Grille FG

Glass Masonry Unit GUMU

Glazed Face CMU GCMU

Glazed Structural Facing Tile SFTU

Granite GT

Gypsum Wallboard GWB

High Glazed Coating SC

Latex Mastic Flooring LM

Linear Metal Ceiling LMC

Linear Wood Ceiling LWC

Marble MB

Material MAT

Mortar M

Multi-Color Coating MC

Natural Finish NF

Paint P

Section 09 06 00 - 12

Paver Tile PVT

Perforated Metal Facing (Tile or

Panels)

PMF

Plaster PL

Plaster High Strength HSPL

Plaster Keene Cement KC

Plastic Laminate HPDL

Polypropylene Fabric

Wallcovering

PFW

Porcelain Paver Tile PPT

Quarry Tile QT

Radiant Ceiling Panel System RCP

Resilient Stair Tread RST

Rubber Base RB

Rubber Tile Flooring RT

Spandrel Glass SLG

Stain ST

Stone Flooring SF

Structural Clay SC

Suspension Decorative

Grids

Grids

SDG

Terrazzo Portland Cement PCT

Terrazzo Tile TT

Terrazzo, Thin Set

Textured Gypsum Ceiling Panel TGC

Textured Metal Ceiling Panel TMC

Thin set Terrazzo TST

Veneer Plaster VP

Vinyl Base VB

Vinyl Coated Fabric

Wallcovering

W

Vinyl Composition Tile VCT

Vinyl Sheet Flooring VSF

Vinyl Sheet Flooring (Welded

Seams)

WSF

Wall Border WB

Wood WD

Section 09 06 00 - 13

3.2 FINISH SCHEDULE SYMBOLS

DESIGNER NOTE: Do not substitute these symbols. Add new symbols as required.

Symbol Definition

** Same finish as adjoining walls

- No color required

E Existing

XX To match existing

EFTR Existing finish to remain

RM Remove

3.3 ROOM FINISH SCHEDULE

A. ROOM FINISH SCHEDULE

Room No.

and Name

FLOOR

BASE

WALL

WAINSCOT

CEILING

REMARKS

E

X

I

S

T

MAT FC

MAT FCC MAT FCC MAT FC MAT FCC

N

E

S

W

C

Section 09 06 00 - 14

W

N

E

S

W

C

E

X

I

S

T

N

E

S

W

N

E

S

W

C

E X I S T

N

E

S

W

N

E

S

Section 09 06 00 - 15

Non-Structural Metal Framing Section 09 22 16 - 1

SECTION 09 22 16

NON-STRUCTURAL METAL FRAMING

PART 1 - GENERAL

1.1 DESCRIPTION

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.

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.

Section 09 22 16 - 2

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.

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 G60 or equivalent.

2.2 STEEL STUDS AND RUNNERS (TRACK)

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

1. Use C645 steel, 1.01 mm (0.040-inch/20 gage) minimum base-metal (40 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 C645. The submission of an evaluation report is acceptable to show conformance to this requirement. Use C645 steel,

0.48 mm (0.019 inch/28 gage) minimum base-metal (19 mil).

Section 09 22 16 - 3

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.

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/29 gage) 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/22 gage) 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 1.01 mm (0.040-inch/20 gage) thick galvanized steel with corrugated edges.

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

Section 09 22 16 - 4

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.

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

H. 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.

Section 09 22 16 - 5

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

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.

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

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.

Section 09 22 16 - 6

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

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.

E. Existing concrete construction exposed or concrete on steel decking:

1. Use power actuated fasteners either eye pin, threaded studs or drive pins for type of hanger attachment required.

2. Install fasteners at approximate mid height of concrete beams or joists. Do not install in bottom of beams or joists.

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 overhead 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.

3.7 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.)

Portland Cement Plastering Section 09 24 00 - 1

SECTION 09 24 00

PORTLAND CEMENT PLASTERING

A. This section specifies lathing and portland cement based plaster (stucco).

1.2 RELATED WORK

A. Section 04 20 00, UNIT MASONRY.

B. Section 09 06 00, SCHEDULE FOR FINISHES: Finish Schedule and Color.

1.3 TERMINOLOGY

A. Definitions and description of terms to be in accordance with ASTM C11, ASTM C926, ASTM

C1063 and as specified.

B. Solid Backing or Solid Bases: Concrete, masonry, sheathing, rigid insulation, and similar materials to which plaster is directly applied.

C. Wet Areas: Areas of a building where cyclic or continuous exposure to very humid or wet conditions, or in which a dew point condition may occur in the plaster.

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. Accessories for plaster, each type.

2. Metal plastering bases, each type.

3. Fasteners.

4. Bonding compounds, including application instructions.

5. Admixtures, including mixing and application instructions.

C. Samples:

1. Accessories for plaster, each type, not less than 152 mm (6 inches) long.

2. Panel showing finish coat 610 by 610 mm (24 by 24 inches) minimum.

D. Installers qualifications.

1.5 DELIVERY, STORAGE AND PROTECTION

A. Deliver manufactured materials in the manufacturers’ original unbroken packages or containers which are labeled plainly with the manufacturers’ names and brands. Keep cementitious materials dry and stored off the ground, under cover, and away from sweating walls and other damp surfaces until ready for use.

1.6 PROJECT CONDITIONS

A. Do not apply exterior plaster when the ambient temperature is less than 4 degrees C (40 degrees

F), or when a drop in temperature below 4 degrees C (40 degrees F) is expected within 24 hours

Section 09 24 00 - 2 after application.

B. Do not apply plaster to frozen surfaces or surfaces containing frost.

C. Do not use frozen materials in the mix.

D. Protect plaster coats against freezing for a period of not less than 24 hours after application.

1.7 QUALITY ASSURANCE

A. Installers Qualifications: Work is to be performed by installer having a minimum of three (3) years’ experience for work relating to this Section. Submit installer qualifications.

B. Mockup: Build 9.29 square meters (100 square feet) mockup for each substrate and finish texture indicated for cement plastering including accessories. For interior plaster work, simulate finished lighting for review of mockups. Approved mockups may become part of completed work.

1.8 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 basic designation only.

B. ASTM International (ASTM):

A653/A653M-20 ......................... Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated

(Galvannealed) by the Hot-Dip Process

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

Deformed, for Concrete

C11-18b ..................................... Terminology Relating to Gypsum and Related Building Materials and Systems.

C91/C91M-18 ............................. Masonry Cement

C150/C150M-20 ......................... Portland Cement

C206-14 ..................................... Finishing Hydrated Lime

C207-18 ..................................... Hydrated Lime for Masonry Purposes

C260/C260M-10a(2016) ............ Air Entraining Admixtures for Concrete.

C847-18 ..................................... Metal Lath

C897-15(2020) ........................... Aggregate for Job-Mixed Portland Cement Based Plasters

C926-20 ..................................... Application of Portland Cement-Based Plaster

C932-06(2019) ........................... Surface-Applied Bonding Compounds for Exterior Plastering

C933-18 ..................................... Welded Wire Lath

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

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

Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs

C1063-19a ................................. Installation of Lathing and Furring to Receive Interior and

Exterior Portland Cement-Based Plaster

E90-09(2016) ............................. Test Method for Laboratory Measurement of Airborne Sound

Section 09 24 00 - 3

Transmission Loss of Building Partitions and Elements

E119-20 ...................................... Test Methods for Fire Tests of Building Construction and

Materials

E413-16 ...................................... Classification for Rating Sound Insulation

C. Commercial Item Description (CID):

A-A-55615-95(R2006) ................ Shield, Expansion (Wood Screw and Lag Bolt Self-Threading

Anchors)

PART 2 - PRODUCTS

2.1 METAL PLASTERING BASES

A. Expanded Lath:

1. ASTM C847, galvanized except as modified by ASTM C1063 and this specification. Self-furring where applied over solid backing.

2. Flat diamond mesh weighing not less than 1.8 kg per square meter (3.4 pounds per square yard).

B. Stucco Mesh: Flat expanded diamond mesh pattern, with openings approximately 38 by 75 mm

(1-1/2 by 3 inches), weighing not less than 1.9 kg per square meter (3.6 pounds per square yard), with backing as specified.

C. Wire Lath:

1. Zinc coated (Galvanized).

2. Welded Wire Lath: ASTM C933, with backing as specified.

3. Self-furring where applied over solid backing.

4. Recycled Content of Metal Products: Post consumer content plus one-half of preconsumer content not less than 30 percent.

D. Building Paper Backing for Metal Plastering Bases:

1. Backing attached to lath as specified in ASTM C933.

2. Vapor Permeable Backing: Fed. Spec. UU-B-790, Type I, Grade D.

3. Water Resistant Backing: Fed. Spec. UU-B-790, Type I, Grade B.

2.2 ACCESSORIES FOR CEMENT PLASTER (STUCCO):

A. Provide accessories that are roll formed galvanized steel, except that cornerite and strip lath that are formed from steel sheets with manufacturer’s standard galvanized coating.

B. Provide welded wire corner reinforcements of galvanized 1.4 mm (17 gauge) steel wire conforming to ASTM A1064/A1064M.

C. Provide furring, including hangers, bolts, inserts, clips, fastenings, and attachments of number, size, and design to develop the full strength of the members.

D. Control Joints: ASTM C1063, zinc-coated (galvanized) steel; one-piece-type, folded pair of unperforated screeds in M-shaped configuration; with perforated flanged and removable protective tape on plaster face of control joint.

Section 09 24 00 - 4

E. Foundation Weep Screed: Fabricated form hot-dip galvanized-steel sheet, ASTM A653/A653M, G60 (Z180) zinc coating.

F. Cornerite: Fabricated from metal lath with ASTM A653/A653M, G60 (Z180), hot-dip galvanized-zinc coating.

G. External- (Outside-) Corner Reinforcement: Fabricated from metal lath with ASTM A653/A653M, G60 (Z180), hot-dip galvanized-zinc coating.

H. Cornerbeads: Fabricated from zinc-coated (galvanized) steel.

1. Smallnose cornerbead with expanded flanges; use unless otherwise indicated on construction documents.

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

3. Smallnose cornerbead with expanded flanges reinforced by perforated stiffening rib; use on columns and for finishing unit masonry corners.

4. Bullnose cornerbead, radius 19 mm (3/4 inch) minimum, with expanded flanges; use at locations indicated on construction documents.

I. Casing Beads: Fabricated form zinc-coated (galvanized) steel; square-edged style; with expanded flanges.

2.3 FASTENERS

A. Tie, wire, screws, staples, clips, nails, and other fasteners ASTM C1063, except as otherwise specified.

B. Provide fasteners for securing metal plastering bases having heads, or inserted through washers large enough to engage two (2) strands (two (2) on each side of screw) of the metal plastering base.

C. For fire rated construction; provide fasteners of type and size as used in fire rated test.

D. Screws: ASTM C1002.

E. Expansion Shields: CID A-A-55615, of the Type and Class applicable.

2.4 CEMENT

A. Portland: ASTM C150/C150M, Type I.

B. Masonry: ASTM C91/C91M, Type N.

C. White where required for white finish coat.

2.5 LIME

A. ASTM C206, Type S; or ASTM C207, Type S.

2.6 AGGREGATES (SAND)

A. ASTM C897, graded as required to suit texture of finish specified.

B. White where white finish coat is specified.

2.7 BONDING AGENT

A. ASTM C932.

2.8 FACTORY PREPARED FINISH COAT FOR CEMENT PLASTER (STUCCO)

Section 09 24 00 - 5

A. Factory prepared dry blend of materials, integrally colored, designed for exterior finish coat application.

B. Pigments: ASTM C979/C979M, lime proof mineral oxide.

C. Particle Size: Not more than 35 percent, by weight of all ingredients, including cement, aggregate, hydrated lime, admixture and coloring pigment is to pass a number 100 sieve.

2.9 ADMIXTURES

A. Air Entrainment: ASTM C260/C260M.

PART 3 - EXECUTION

3.1 METAL PLASTERING BASES (LATH) LOCATIONS

A. Where plaster is required on solid concrete or masonry bases, metal plastering bases are not required, unless shown on the construction documents. Where shown use wire lath or stucco mesh.

B. On ceiling or soffit framing use flat diamond mesh lath.

C. Where metal plastering bases are used as a base for exterior cement plaster over wall sheathing, provide wire lath or stucco mesh with water resistant backing.

3.2 APPLYING METAL PLASTERING BASES

A. In accordance with ASTM C1063, except as otherwise specified or indicated on construction documents.

B. Form true surfaces, straight or in curves where shown on construction documents, without sags or buckles and with long dimension of lath at right angles to direction of supports.

C. Terminate lath for ceiling or soffit construction at casing bead (floating angle construction) at perimeter angles between walls and ceilings or soffits.

D. Lath with backing to be applied to produce a paper to paper and metal to metal lap at ends and sides of adjacent sheets, whether full sheets or less than full sheets are provided:

1. Lap backing 50 mm (2 inches) for both horizontal and vertical laps.

2. Install horizontal laps in a ship lap fashion to conduct water to the outside and over flashing or waterproofing.

E. Do not install continuous metal plastering bases through expansion and control joints. Terminate at each side of joint.

F. Attach lath directly to masonry and concrete with hardened nails, power actuated drive pins or other approved fasteners. Install fasteners at dimples or crimps only.

G. Wood plugs are not acceptable.

3.3 INSTALLING PLASTERING ACCESSORIES

A. Install accessories in accordance with ASTM C1063, except as otherwise specified.

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

2. Install in one (1) piece, within the limits of the longest commercially available lengths.

Section 09 24 00 - 6

B. Corner Beads: External-corner reinforcement or corner bead at exterior corners, as required to establish grounds, and where shown on construction documents.

C. Strip Lath:

1. Install centered over joints between dissimilar materials, such as hollow tile, brick, concrete masonry units, concrete, and joints with expanded lath on framing or furring, where both such surfaces are required to be plastered and are in contact with each other in same plane, except where expansion joints and casing beads are required.

2. Wire tie or fasten strip lath to base along both edges at not over 152 mm (6 inches) on centers.

D. Casing Beads:

1. Provide at locations where shown on construction documents and at following locations where plaster terminates to provide finish trim:

a. Against non-plastered surfaces such as masonry, concrete, and wood.

b. Against trim of steel frames and trim of other materials and equipment, except where trim overlaps plaster.

c. Around perimeter of openings except where edge is covered by flanges. Locate to conform to dimensions shown on shop drawings.

d. Where plaster for new walls or furring (vertical or horizontal) terminates against existing construction.

e. Both sides of expansion and control joints unless shown otherwise on construction documents.

2. Provide at perimeter angles between walls and ceilings so as to provide floating angle

(unrestrained) construction in accordance with ASTM C1063.

E. Cornerites:

1. Provide at interior corners of walls, partitions, and other vertical surfaces to be plastered, except where lath is carried around angle.

2. Fasten only as necessary to retain position during plastering.

3. Omit cornerites at junction of new plastered walls with existing plastered walls at locations where casing beads are specified.

F. Control Joints:

1. Where control joints are placed parallel to framing members, install joints within 102 mm (4 inches) of the framing member.

2. Install control joints only to the edges of abutting sheets of lath so that the lath is not continuous or tied across the joint.

3. Extend joints the full width and height of the wall or length of soffit/ceiling plaster membrane.

3.4 SURFACE PREPARATION OF SOLID BASES

A. Surfaces that are to receive plaster are to be prepared and conditioned in accordance with

Section 09 24 00 - 7

ASTM C926, except as otherwise specified.

B. New surfaces of masonry and concrete:

1. Remove projections and clean concrete surface of form oil.

2. Fill depressions, holes, cracks and similar voids flush with Portland cement plaster to provide substrate within the tolerance specified in ASTM C926.

3. Use bonding agent.

4. Cover with self-furring lath where required to keep the total plaster thickness as specified in

Table 4 of ASTM C926.

C. Existing surfaces of concrete and masonry:

1. Clean surface of dirt and other foreign matter which will prevent bond.

2. Apply dash bond coat or bonding agent as specified herein.

3. Where existing surfaces have a coating such as paint or bituminous waterproofing apply metal plastering base as indicated.

3.5 PORTLAND CEMENT BASED PLASTER

A. Provide Portland cement based plaster where cement plaster (stucco) is shown and specified, and as follows:

1. Three-Coat work is to be used over all metal plastering bases, with or without solid backing.

2. Two-Coat work may only be used over solid bases conforming to requirements of Paragraph, SURFACE PREPARATION OF SOLID BASES.

B. Proportion, mix and apply plaster in accordance with ASTM C926, except as otherwise specified.

1. Provide air entrained plaster for all exterior work.

2. Provide coloring pigments for finish coat when integral color other than white is specified.

3. Provide white cement with white sand when white finish coat is specified.

4. Factory prepared finish coat: Add water, mix,…