Exhibit_9 _1_Oct_15.pdf
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Exhibit 9 Technical Specification Division 09 Finishes
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SECTION 09 06 90 Page 1
SECTION 09 06 90
COLOR SCHEDULE
PART 1 GENERAL
1.1 GENERAL
This section covers only the color of the exterior and interior materials and products that are exposed to view in the finished construction. The word "color" as used herein includes surface color and pattern.
Requirements for quality and method of installation are covered in other appropriate sections of the specifications. Specific locations where the various materials are required are shown on the drawings. Items not designated for color in this section may be specified in other sections.
When color is not designated for items, the contractor shall propose a color for approval.
1.2 SUBMITTALS
Government approval is required for submittals with a "G" designation;
submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-04 Samples
Color Schedule; G
Sets of color boards, 120 days after the contractor is given Notice to proceed, complying with the following requirements:
a. Color boards shall reflect all actual finish textures, patterns, and colors required for this contract.
b. Materials shall be labeled with the finish type, manufacturer's name, pattern, and color reference.
c. Samples shall be on size 8-1/2 by 11 inch boards with a maximum spread of size 25-1/2 by 33 inches for foldouts.
d. Samples for this color board are required in addition to samples requested in other specification sections.
PART 2 PRODUCTS
2.1 REFERENCE TO MANUFACTURER'S COLOR
Where color is shown as being specific to one manufacturer, an equivalent color by another manufacturer may be submitted for approval. Manufacturers and materials specified are not intended to limit the selection of equal colors from other manufacturers.
2.2 COLOR SCHEDULE
SECTION 09 06 90 Page 2
The color schedule lists the colors, patterns and textures required for exterior and interior finishes, including both factory applied and field applied colors.
2.2.1 Exterior Walls
Exterior wall colors shall apply to exterior wall surfaces including recesses at entrances and projecting vestibules. Conduit shall be painted to closely match the adjacent surface color. Wall color shall be provided to match the colors listed below or if not listed as indicated in the Task or Delivery Order.
2.2.1.1 Brick
2.2.1.2 Mortar
2.2.1.3 Integrally Colored, Rock/Split-Faced, Ribbed, or Burnished Concrete Masonry Units
2.2.1.4 Paint
2.2.1.5 Metal Wall Panels, Hardware, and Associated Trim
2.2.1.6 Insulation and Finish System
2.2.1.7 Precast Concrete
2.2.1.8 Precast Stone
2.2.1.9 Glass and Glazing
2.2.1.10 Cement Board Siding and Trim
2.2.1.11 Cultured Stone
2.2.2 Exterior Trim
Exterior trim shall be provided to match the colors listed below or if not listed as indicated in the Task or Delivery Order.
2.2.2.1 Steel Doors and Door Frames
2.2.2.2 Steel Windows (mullion, muntin, sash, trim, and sill)
2.2.2.3 Aluminum Doors and Door Frames
2.2.2.4 Aluminum Windows (mullion, muntin, sash, trim, and sill)
2.2.2.5 Wood Clad Windows (mullion, muntin, sash, trim, and sill)
2.2.2.6 Wood Stain
2.2.2.7 Fascia
2.2.2.8 Soffits and Ceilings
SECTION 09 06 90 Page 3
2.2.2.9 Overhangs
2.2.2.10 Downspouts, Gutters, Louvers, and Flashings
2.2.2.11 Coping
2.2.2.12 Precast Concrete Caps, and Sills
2.2.2.13 Precast Stone Caps and Sills
2.2.2.14 Caulking and Sealants
2.2.2.15 Stringers and Stair Framing
2.2.2.16 Control Joints
2.2.2.17 Expansion Joint and/or Covers
2.2.2.18 Handrails
2.2.2.19 Signage
2.2.3 Exterior Roof
Roof color shall apply to exterior roof surfaces including sheet metal flashings and copings, mechanical units, roof trim, pipes, conduits, electrical appurtenances, and similar items. Roof color shall be provided to match the colors listed below or if not listed as indicated in the Task or Delivery Order.
2.2.3.1 Metal
2.2.3.2 Shingles
2.2.3.3 EPDM
2.2.3.4 Penetrations
Shall match roof in color.
2.2.4 Interior Floor Finishes
Flooring materials shall be provided to match the colors listed below or if not listed as indicated in the Task or Delivery Order.
2.2.4.1 Carpet
2.2.4.2 Carpet Tile
2.2.4.3 Vinyl Composition Tile
2.2.4.4 Sheet Vinyl
2.2.4.5 Rubber Tile
2.2.4.6 Stair Treads, Kick Strips, and Risers
SECTION 09 06 90 Page 4
2.2.4.7 Quarry Tile
2.2.4.8 Ceramic Tile
2.2.4.9 Porcelain Tile
2.2.4.10 Grout
2.2.4.11 Plastic Laminate
2.2.4.12 Wood
2.2.4.13 Static Dissipative or Conductive Tile
2.2.4.14 Concrete Paint or Stain
2.2.4.15 Industrial Floor Coating
2.2.5 Interior Base Finishes
Base materials shall be provided to match the colors listed below or if not
2.2.5.1 Resilient Base and Moldings
2.2.5.2 Quarry Tile
2.2.5.3 Ceramic Tile
2.2.5.4 Porcelain Tile
2.2.5.5 Grout
2.2.5.6 Coved Sheet Vinyl
2.2.5.7 Glazed Structural Units
2.2.5.8 Prefaced Concrete Masonry Units
2.2.5.9 Brick
2.2.5.10 Mortar
2.2.5.11 Paint
2.2.5.12 Wood
2.2.6 Interior Wall Finishes
Interior wall color shall apply to the entire wall surface, including reveals, vertical furred spaces, grilles, diffusers, electrical and access panels, and piping and conduit adjacent to wall surfaces unless otherwise specified. Items not specified in other paragraphs shall be painted to match adjacent wall surface. Wall materials shall be provided to match the colors listed below or if not listed as indicated in the Task or Delivery Order.
SECTION 09 06 90 Page 5
2.2.6.1 Paint
2.2.6.2 Vinyl Wall Covering
2.2.6.3 Fabric Wall Covering
2.2.6.4 Acoustical Wall Covering
2.2.6.5 Ceramic Tile
2.2.6.6 Ceramic Tile Grout
2.2.6.7 Brick
2.2.6.8 Mortar
2.2.6.9 Metal Liner Panels
2.2.6.10 Glazed Structural Units
2.2.6.11 Prefaced Concrete Masonry Units
2.2.6.12 Columns
2.2.7 Interior Ceiling Finishes
Ceiling colors shall apply to ceiling surfaces including soffits, furred down areas, grilles, diffusers, registers, and access panels. Ceiling color shall also apply to joist, underside of roof deck, and conduit and piping where joists and deck are exposed and required to be painted. Ceiling materials shall be provided to match the colors listed below or if not
2.2.7.1 Acoustical Tile and Grid
2.2.7.2 Paint
2.2.7.3 Metal Deck
2.2.7.4 Structural Framing
2.2.8 Interior Trim
Interior trim shall be provided to match the colors listed below or if not
2.2.8.1 Steel Doors
2.2.8.2 Steel Door Frames
2.2.8.3 Steel Windows (mullion, muntin, sash, trim, and stool)
2.2.8.4 Aluminum Doors and Door Frames
2.2.8.5 Aluminum Windows (mullion, muntin, sash, trim, and sill)
SECTION 09 06 90 Page 6
2.2.8.6 Wood Doors
2.2.8.7 Wood Stain
2.2.8.8 Window Sills
2.2.8.9 Fire Extinguisher Cabinets
2.2.8.10 Handrails
2.2.8.11 Ladders
2.2.8.12 Metal Stairs
2.2.8.13 Exposed Ductwork
2.2.8.14 Closet Shelving
2.2.8.15 Benches
2.2.9 Interior Window Treatment
Window treatments shall be provided to match the colors listed below or if
2.2.9.1 Horizontal Blinds
2.2.9.2 Integral Blinds
2.2.9.3 Vertical Blinds
2.2.9.4 Drapery Hardware
2.2.9.5 Window Shades
2.2.10 Interior Miscellaneous
Miscellaneous items shall be provided to match the colors listed below or if
2.2.10.1 Toilet Partitions and Urinal Screens
2.2.10.2 Plastic Laminate
2.2.10.3 Solid Surfacing Material
2.2.10.4 Casework
2.2.10.5 Signage Message Color (excluding handicapped signage)
2.2.10.6 Signage Background Color (excluding handicapped signage)
2.2.10.7 Operable Partitions
2.2.10.8 Acoustical Wall Panels
SECTION 09 06 90 Page 7
2.2.10.9 Corner Guards
2.2.10.10 Wall Switch Handles and Standard Receptacle Bodies
2.2.10.11 Electrical Device Cover Plates
2.2.10.12 Electrical Panels
2.2.10.13 Shower Curtains or Doors
2.2.10.14 Shower Wall Kits, Trim and Shower Pan
2.3 PLACEMENT SCHEDULE
Placement of color shall be in accordance with the following schedule
Room: Name Base Floor N Wall S Wall E Wall W Wall Ceiling
Material:
PART 3 EXECUTION (NOT APPLICABLE)
-- End of Section --
SECTION 09 22 00 Page 1
SECTION 09 22 00
SUPPORTS FOR PLASTER AND GYPSUM BOARD
PART 1 GENERAL
1.1 REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)
AISC 341 (2005; Supp 2001) Seismic Provisions for Structural
Steel Buildings
ASTM INTERNATIONAL (ASTM)
ASTM A 463/A 463M (2006) Standard Specification for Steel Sheet, Aluminum-Coated
ASTM A 653/A 653M (2008) Standard Specification for Steel Sheet, Zinc-
Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
ASTM C 645 (2008a) Nonstructural Steel Framing Members
ASTM C 754 (2007) Installation of Steel Framing Members to
Receive Screw-Attached Gypsum Panel Products
ASTM C 841 (2003) Installation of Interior Lathing and Furring
ASTM C 847 (2006) Standard Specification for Metal Lath
NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)
NAAMM ML/SFA 920 (1991) Metal Lathing and Furring
UNDERWRITERS LABORATORIES (UL)
UL Fire Resistance (2008) Fire Resistance Directory submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-02 Shop Drawings
Metal support systems; G
SECTION 09 22 00 Page 2
Submit for the erection of metal framing, furring, and ceiling suspension systems. Indicate materials, sizes, thicknesses, and fastenings.
1.3 DELIVERY, STORAGE, AND HANDLING
Deliver materials to the job site and store in ventilated dry locations.
Storage area shall permit easy access for inspection and handling. If materials are stored outdoors, stack materials off the ground, supported on a level platform, and fully protected from the weather. Handle materials carefully to prevent damage. Remove damaged items and provide new items.
2.1 MATERIALS
Provide steel materials for metal support systems with galvanized coating ASTM A 653/A 653M, G-60; aluminum coating ASTM A 463/A 463M, T1-25; or a 55-percent aluminum-zinc coating. Provide support systems and attachments per AISC 341 in seismic zones.
2.1.1 Materials for Attachment of Lath
2.1.1.1 Suspended and Furred Ceiling Systems and Wall Furring
ASTM C 841, and ASTM C 847.
2.1.1.2 Non-load bearing Wall Framing
NAAMM ML/SFA 920.
2.1.2 Materials for Attachment of Gypsum Wallboard
2.1.2.1 Suspended and Furred Ceiling Systems
ASTM C 645.
2.1.2.2 No-load-Bearing Wall Framing and Furring
ASTM C 645, but not thinner than 0.0179 inch thickness, with 0.0329 inch minimum thickness supporting wall hung items such as cabinetwork, equipment and fixtures .
2.1.2.3 Furring Structural Steel Columns
ASTM C 645. Steel (furring) clips and support angles listed in UL Fire Resistance may be provided in lieu of steel studs for erection of gypsum wallboard around structural steel columns.
2.1.2.4 Z-Furring Channels with Wall Insulation
Not lighter than 26 gage galvanized steel, Z-shaped, with1 1/4 inch and 3/4 inch flanges and depth as required by the insulation thickness provided.
PART 3 EXECUTION
SECTION 09 22 00 Page 3
3.1 INSTALLATION
3.1.1 Systems for Attachment of Lath
3.1.1.1 Suspended and Furred Ceiling Systems and Wall Furring
ASTM C 841, except as indicated otherwise.
3.1.1.2 Non-load bearing Wall Framing
NAAMM ML/SFA 920, except provide framing members 16 inches o.c. unless indicated otherwise.
3.1.2 Systems for Attachment of Gypsum Wallboard
3.1.2.1 Suspended and Furred Ceiling Systems
ASTM C 754, except provide framing members 16 inches o.c. unless indicated otherwise.
3.1.2.2 Non-load bearing Wall Framing and Furring
ASTM C 754, except as indicated otherwise.
3.1.2.3 Furring Structural Steel Columns
Install studs or galvanized steel clips and support angles for erection of gypsum wallboard around structural steel columns in accordance with the UL Fire Resistance, design number(s) indicated .
3.1.2.4 Z-Furring Channels with Wall Insulation
Install Z-furring channels vertically spaced not more than 24 inches o.c.
Locate Z-furring channels at interior and exterior corners in accordance with manufacturer's printed erection instructions. Fasten furring channels to masonry and concrete walls with powder-driven fasteners or hardened concrete steel nails through narrow flange of channel. Space fasteners not more than 24 inches o.c.
3.2 ERECTION TOLERANCES
Provide framing members that will be covered by finish materials such as wallboard, plaster, or ceramic tile set in a mortar setting bed, within the following limits:
a. Layout of walls and partitions: 1/4 inch from intended position;
b. Plates and runners: 1/4 inch in 8 feet from a straight line;
c. Studs: 1/4 inch in 8 feet out of plumb, not cumulative; and
d. Face of framing members: 1/4 inch in 8 feet from a true plane.
Provide framing members that will be covered by ceramic tile set in dry-set mortar, latex-Portland cement mortar, or organic adhesive within the following limits:
SECTION 09 22 00 Page 4
a. Layout of walls and partitions: 1/4 inch from intended position;
b. Plates and runners: 1/8 inch in 8 feet from a straight line;
c. Studs: 1/8 inch in 8 feet out of plumb, not cumulative; and
d. Face of framing members: 1/8 inch in 8 feet from a true plane.
SECTION 09 22 36 Page 1
SECTION 09 22 36
LATH
PART 1 GENERAL
1.1 REFERENCES
The publications listed below form a part of this specification to the
ASTM C 1063 (2007) Standard Practice for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
ASTM C 841 (2003) Installation of Interior Lathing and Furring submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that
SD-03 Product Data
Lath Accessories Access panels
1.3 DELIVERY AND STORAGE
Deliver materials in the manufacturer's original unbroken packages or containers that are labeled plainly with the manufacturer's names and brands. Store materials in dry locations with adequate ventilation, free from water, and in such a manner to permit easy access for inspection and handling. Stack gypsum lath flat to avoid sagging or damage to edges, ends, or surfaces, and protect from exposure to direct sunlight.
2.1 LATH
2.1.1 Metal Plastering Base (Lath)
Provide the type(s) and weight(s) required for the type and spacing of supports shown for the kind of plaster indicated and specified. Do not use rib lath for ceramic tile scratch coat.
SECTION 09 22 36 Page 2
2.1.1.1 For Portland Cement-Based Plaster (Stucco)
ASTM C 1063, weight per square yard as specified.
2.1.1.2 For Gypsum Plaster
ASTM C 841, Weight per square yard as specified.
2.1.1.3 Paper Backing (Waterproofed Kraft Building Paper)
Provide metal plastering base with paper backing either water-vapor resistant or moderate water-vapor resistant or water vapor permeable as required for installation and as specified,
2.1.1.4 Galvanized Metal Plastering Base
Provide for exterior plastering work in all locations.
2.1.2 Gypsum Lath
ASTM C 1063. Provide plain, Type X (fire resistant), or foil-backed gypsum lath in thickness indicated.
2.1.3 Accessories
ASTM C 1063. Provide only galvanized steel; zinc alloy or clear plastic coated aluminum accessories.
2.2 ACCESS PANELS
Prefabricated steel units, size(s) as indicated. Fabricate frame of preformed angle or channel with welded joints. Perforate wide leg or flange of frame section or extend frame section into expanded metal wings to provide a key for the plaster. Cover shall be hinged or snap-on type with turn-latch or spring catch. Fabricate access panels not larger than 24 by 36 inches from 14 gage steel with frames not lighter than 16 gage.
Fabricate access panels larger than 24 by 36 inches as indicated. Factory-prime panels with rust-inhibitive paint.
3.1 INSPECTION
Verify that framing, furring and accessories are securely attached and of proper sizes and spacing necessary to provide a suitable substrate to receive lath. Do not proceed with work until framing, furring and accessories are acceptable to the Contracting Officer for application of lath.
3.2 INSTALLATION
3.2.1 Lathing Materials and Accessories
Install in accordance with ASTM C 1063 for Portland cement-based plaster work and ASTM C 841 for gypsum plaster work, except where indicated or specified otherwise herein.
SECTION 09 22 36 Page 3
3.2.1.1 Metal Plastering Base
Install where indicated.
3.2.1.2 Metal Plaster Base with Paper Backing
Where used, lap joints to provide backing on backing and metal-on-metal. Lap backing not less than one inch. Lap backing so that water will flow to the exterior.
3.2.1.3 Gypsum Lath
Install where indicated.
3.2.1.4 Control (Expansion and Contraction) Joints
a. For Portland cement-based plaster (ceilings and walls), install to create panels no larger than l00 square feet with no dimension exceeding 10 feet.
b. For unrestrained gypsum plaster ceilings install to create panels no larger than 2,500 square feet with no dimension exceeding 50 feet.
For gypsum plaster walls, partitions and ceilings without perimeter relief install not more than 30 feet on centers in either direction.
c. Install where indicated, where expansion joints occur in the structural walls and ceilings and where ceiling framing or furring changes direction. Terminate lath at each side of joint and fasten joints securely to lath.
3.2.1.5 Unrestrained Ceilings
Furred or suspended ceilings constructed with gypsum plaster and larger than 2,500 square feet in area or with any dimension exceeding 50 feet or Portland cement-based plaster must be unrestrained. Isolate ceiling lath and plaster from ceiling intersecting vertical surfaces with casing beads, control joints, or similar devices designed to keep the ceiling isolated from the adjacent vertical surfaces (walls, partitions, beams, and columns).
Do not use corner reinforcement at the internal angle between the ceiling and the vertical surfaces.
3.2.1.6 Plastering Beads
Install edge trim (casing bead) at the edges of plaster that abuts or adjoins an unplastered surface, on each surface at the internal angle formed by load bearing and non-load bearing walls and partitions abutting structural walls, columns, or floor-ceiling slabs, between concrete or terrazzo bases and the plaster above them, on each side of the joint between walls or partitions constructed of dissimilar materials that require plastering, and between plasters of a different composition. Fill voids formed in corners with sealant. Install corner beads at all vertical external corners of plaster walls.
3.2.2 Fire-Resistant Assemblies
Wherever fire-resistant construction is indicated, provide all materials and application methods, including types and spacing of fasteners, in accordance
SECTION 09 22 36 Page 4 with the specifications contained in the UL Fire Resistance for the Design Number(s) indicated.
3.2.3 Access Panels
Install in suspended ceilings and plastered walls at locations indicated.
SECTION 09 23 00 Page 1
SECTION 09 23 00
GYPSUM PLASTERING
1.1 REFERENCES
The publications listed below form a part of this specification to the
ASTM C 11 (2008a) Standard Terminology Relating to Gypsum and
Related Building Materials and Systems
ASTM C 206 (2003) Standard Specification for Finishing Hydrated
Lime
ASTM C 28/C 28M (2000; R 2005) Gypsum Plasters
ASTM C 35 (2001; R 2005) Inorganic Aggregates for Use in Gypsum
Plaster
ASTM C 472 (1999; R 2004) Physical Testing of Gypsum, Gypsum
Plasters and Gypsum Concrete
ASTM C 59/C 59M (2000) Gypsum Casting Plaster and Gypsum Molding
Plaster
ASTM C 61/C 61M (2000) Gypsum Keene's Cement
ASTM C 631 (1995a; R 2004) Bonding Compounds for Interior Gypsum
Plastering
ASTM C 842 (2005) Application of Interior Gypsum Plaster
ASTM E 1042 (2002) Acoustically Absorptive Materials Applied by
Trowel or Spray
1.2 SUBMITTALS
Government approval is required for submittals with a "G" designation;
submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that
Gypsum Plaster; G
Submit four 36 inch square panels of varying texture for the Contracting Officer's approval.
Full Size Sample; G
SECTION 09 23 00 Page 2
SD-08 Manufacturer's Instructions
Ready-mix gypsum plaster Acoustical Plaster Finish
Submit manufacturer's printed mixing instructions for ready-mix plaster and acoustical plaster finish.
1.3 QUALITY ASSURANCE
Erect sample panel at the building site, or as otherwise directed. Finished gypsum plaster work must match the approved sample panel.
1.4 DELIVERY, STORAGE, AND HANDLING
Deliver manufactured materials in the manufacturers' original unbroken packages or containers that 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.
1.5 ENVIRONMENTAL CONDITIONS
1.5.1 Gypsum Plaster
Maintain an ambient temperature of not less than 55 degrees F continuously during plastering, and drying, and until occupancy heating conditions are established in the area. Maintain this temperature for not less than one week prior to the application of plaster. Provide regulated ventilation to prevent "sweatouts" or "dry-outs." When the building is exposed to hot dry winds or day-to-night temperature differentials of 20 degrees F or more, cover openings that are not glazed. Gypsum and related materials must conform to ASTM C 11.
1.6 GYPSUM PLASTER FULL SIZE SAMPLE
After selection of an acceptable texture, construct a sample panel separate from the building, minimum size of 8 feet in height, by 8 feet in length, using 6 inch metal studs, and gypsum board, metal lath and gypsum plaster.
The sample wall must show all aspects of gypsum plaster work, including but not limited to, expansion joints, control joints, corner extrusions, and casing beads. A sample of a control joint and extrusion butt joint must also be incorporated into the sample wall. Finish work must match the approved sample panel. Divide the panel into four equal quadrants with the expansion and control joints to show each phase of work, lath, scratch coat, brown coat, and finish coats. The contractor shall protect the sample wall from damage during the length of the contract.
Conform to the specifications, standards, and requirements specified herein.
Provide asbestos-free materials.
2.2 GYPSUM BASE COAT PLASTER
SECTION 09 23 00 Page 3
2.2.1 Gypsum Neat Plaster Base Coat
ASTM C 28/C 28M.
2.2.2 Gypsum Ready-Mixed Plaster Base Coat
2.2.3 Gypsum Wood-Fibered Plaster Base Coat
2.2.4 High Strength Gypsum Plaster Base Coat
ASTM C 28/C 28M, gypsum neat plaster, except plaster must have a compressive strength of not less than 2,500 psi, when tested dry in accordance with ASTM C 472.
2.3 GYPSUM FINISH COAT PLASTER
2.3.1 Gypsum Gauging Plaster Finish Coat
2.3.2 High Strength Gypsum Gauging Plaster Finish Coat
ASTM C 28/C 28M, gypsum gauging plaster, except plaster must have a compressive strength of not less than 4,500 psi when tested dry in accordance with ASTM C 472.
2.3.3 Gypsum Molding Plaster for Ornamental Plaster
ASTM C 59/C 59M.
2.3.4 Keene's Cement Finish Coat
ASTM C 61/C 61M.
2.3.5 Acoustical Plaster Finish Coat
ASTM E 1042 Type I, or II, Class A, noncombustible.
2.4 HYDRATED LIME
ASTM C 206, Type S.
2.5 AGGREGATES
2.5.1 Sand for Gypsum Base Coats
ASTM C 35.
Sand Gradation: Percentage retained by weight (plus or minus 2 percent) on each sieve.
SECTION 09 23 00 Page 4
Sieve Size Max. Min.
No. 4 0 0 No. 8 5 0 No. 16 30 5 No. 30 65 30 No. 50 95 65 No. 100 100 90
2.5.2 Sand for Gypsum Sand Float Finish
ASTM C 842.
Sand Gradation: Percentage retained by weight (plus or minus 2 percent) on each sieve.
Sieve Size Max. Min.
No. 20 0 0 No. 30 0.5 0 No. 100 100 40 No. 200 100 70
2.5.3 Lightweight Aggregates, Perlite or Vermiculite for Gypsum Base Coat
ASTM C 35.
2.5.4 Silica Sand or Perlite Fines
For use in lime-putty gypsum-gauged finish, aggregated white coat, must have the following gradation: 10 percent maximum retained on a No. 30 sieve, 4 percent minimum and 70 percent maximum retained on a No. 100 sieve, and 70 percent minimum and 100 percent maximum retained on No. 200 sieve.
2.6 WATER
Use only potable water, free of mineral and organic substances that affect the hardening and durability of the plaster or stucco.
2.7 PROPORTIONING
Unless specified otherwise, materials are specified on a volume basis and must be measured in approved containers, to ensure that the specified proportions will be controlled and accurately maintained during the progress of the work. Measuring materials with shovels (shovel count) is not be permitted. Prepare ready-mix gypsum plaster for use by the addition of water only.
2.7.1 Gypsum Base Coat Plaster
Use of sand or lightweight aggregate is optional in gypsum plaster basecoats, except provide (1) sand for Keene's cement and high strength gypsum-gauged finish coats; (2) lightweight aggregate when necessary for a required fire resistance rating .
2.7.1.1 Sand and Gypsum Plaster Base Coat
SECTION 09 23 00 Page 5
Mix scratch coat in the proportion of 100 lb of gypsum neat plaster to not more than 2 cubic feet of damp loose sand; mix brown coat in the proportion of 100 lb of gypsum neat plaster to not more than 3 cu ft of damp loose sand; or scratch and brown coats may both be mixed in the proportion of 100 lb of gypsum neat plaster to not more than 2-1/2 cubic feet of damp loose sand. Mix the basecoats for double-up work in the proportion of 100 lb of gypsum neat plaster to not more than 2-1/2 cubic feet of damp loose sand on gypsum lath and not more than 3 cu ft of damp loose sand on masonry.
2.7.1.2 Lightweight Aggregate and Gypsum Plaster Base Coat
Mix scratch coat in the proportion of 100 lb of gypsum neat plaster to not more than 2-1/2 cubic feet of lightweight aggregate on gypsum lath, and not more than 3 cubic feet of lightweight aggregate on masonry. Mix brown coat in the proportion of 100 lb of gypsum neat plaster to not more than 2-1/2 cubic feet of lightweight aggregate on gypsum lath and not more than 3 cubic feet of light weight aggregate on masonry. Where plaster thickness exceeds one inch, the aggregate proportion may be increased to 3 cubic feet.
Mix the basecoats in two-coat double-up work in the proportion of 100 lb of gypsum neat plaster to not more than 2-1/2 cubic feet of lightweight aggregate on gypsum lath and not more than 3 cubic feet of lightweight aggregate on masonry. Gypsum ready-mixed plaster with perlite aggregate may be provided in lieu of field-mixed lightweight aggregate and gypsum plaster, provided the specified proportion of aggregate to plaster does not exceed the proportion specified for field-mixed plaster.
2.7.1.3 Sand and Wood Fibered Gypsum Plaster Base Coat
Mix basecoats in the proportion of 100 lb of wood-fibered gypsum plaster to not more than one cubic foot of damp loose sand.
2.7.1.4 Sand and High-Strength Gypsum Plaster Base Coat
Mix scratch coat in the proportion of 100 lb of high strength gypsum base coat plaster to not more than 2 cubic feet of damp loose sand. Mix brown coat in the proportion of 100 lb of high strength gypsum basecoat plaster to not more than 3 cubic feet of damp loose sand.
2.7.2 Gypsum Plaster Finish Coat
2.7.2.1 Lime-Putty
Prepare lime-putty in accordance with the printed directions of the manufacturer. Use putty following preparation or following a soaking period as recommended by the manufacturer.
2.7.2.2 Lime-Putty Gypsum-Gauged (White Coat)
Use over sand and gypsum plaster or sand and wood-fibered gypsum plaster.
Mix finish coat in the proportions of one part of gypsum gauging plaster to a volume of hydrated lime or lime putty.
This mix is approximately equivalent to one 100 lb bag of gypsum gauging plaster to:
a. Not more than four 50 lb bags of hydrated lime, or
SECTION 09 23 00 Page 6
b. Not more than 4-1/2 cubic feet of lime putty, or
c. Not more than 35 gallon of lime putty.
2.7.2.3 Aggregated Finish Coat
Finish coat must consist of the lime-putty, gypsum-gauged finish specified herein with the addition of fine pulverized silica sand or perlite fines in the following proportions:
a. 1/2 cubic feet per 100 lb bag of gypsum gauging plaster used in finish, or
b. 1/8 cubic feet per 50 lb bag of hydrated lime, or
c. one gallon per cubic foot of lime-putty.
2.7.2.4 Gypsum Sand Float Finish:
Mix finish in the proportion of one part neat unfibered gypsum plaster to not more than two parts of sand, by weight.
2.7.2.5 Keene's Cement Lime-Putty Finish
Mix finish in the proportion of not more than 100 lb of lime putty to 100 lb of Keene's cement.
2.7.2.6 High Strength Gypsum-Gauged Plaster Finish
Mix finish in the proportion of 200 lb of high strength gauging to 100 lb of hydrated lime.
2.7.2.7 Acoustical Plaster Finish
Mix finish in accordance with manufacturer's printed instructions.
2.8 MIXING
2.8.1 Job-Mixed Materials
Mix materials in mechanical mixers except finish coats containing lime may be hand mixed. Mechanical mixers must be an approved type that accurately and uniformly controls the quantity of water. When mixing by hand, mix dry plaster aggregate to a uniform color in the mixing box, add water, and hoe the plaster immediately into the water and mix thoroughly to a proper consistency.
Water used for rinsing and cleaning containers and tools must not be used in mixing the materials.
Sand proportions must be damp and in loose condition. A volume of damp loose sand must contain a minimum of 80 lb of dry sand in one cubic foot.
Mix the material while the mixer is in continuous operation in the following sequence:
a. Add maximum close to 90 percent of estimated quantity of water.
SECTION 09 23 00 Page 7
b. Add approximately one-half of the sand. If vermiculite or perlite is used, add all the aggregate.
c. Add cement and approved admixtures. Add lime prior to cement.
d. Add remainder of sand.
e. Mix with remainder of water as required. Mix until the mixture is uniform in color and consistency.
Avoid excessive mixing and agitation. Discard gypsum plaster that has begun to set before it is used; do not permit retempering. Do not use frozen, caked, or lumped materials. Empty mixers and mixing boxes after each batch is mixed, and keep free of old plaster.
2.8.2 Ready-Mixed Packaged Materials
Mix ready-mixed packaged gypsum plaster in accordance with manufacturer's printed instructions.
2.9 BONDING AGENT
ASTM C 631, interior application.
3.1 SURFACE PREPARATION
Clean surfaces before application of gypsum plaster of projections, dust, loose particles, grease, bond breakers, and foreign matter. Do not apply plaster directly to surfaces (1) of masonry or concrete that have been coated with bituminous compound or other waterproofing agents, or (2) that have been painted or previously plastered. Before plaster work is started, wet masonry and concrete surfaces thoroughly with a fine fog spray of clean water to produce a uniformly moist condition. Check metal grounds, corner beads, screeds, and other accessories carefully for alignment before starting work. Do not apply gypsum plaster to surfaces containing frost.
3.2 WORKMANSHIP
3.2.1 Slump Tests
Apply Plaster by hand or machine. When a plastering machine is used, control the fluidity of gypsum plaster to have a slump of not more than 3 inch when tested using a 2 by 4 by 6 inch high slump cone. Subsequent to determining water content to meet the specified slump, do not add additional water to the mix. Conduct the slump test according to the following procedure:
a. Place cone on level, dry, non-absorptive base plate.
b. While holding cone firmly against base plate, fill cone with plaster taken directly from the hose or nozzle of the plastering machine, tamping with metal rod during filling to release air bubbles.
SECTION 09 23 00 Page 8
c. Screed off plaster level with top of cone. Remove cone by lifting it straight up with a slow and smooth motion.
d. Place cone in a vertical position adjacent to freed plaster sample, using care not to shake or move base plate.
e. Lay a straightedge across top of cone, being careful not to shake or move cone. Measure slump in inch from the bottom edge of the straightedge to the top of the slumped plaster sample.
3.2.2 Application
Apply gypsum plaster in three coats, except as follows:
a. Gypsum plaster applied to masonry and gypsum lath using the two-coat double-up method.
Apply base coats with sufficient pressure and ensure plaster is sufficiently plastic to provide a strong bond to bases. Work base coats into screeds at intervals from 5 to 8 feet. Plaster must not be continuous across expansion and control joints occurring in walls, partitions, and ceilings. Finish work level, plumb, square, and true, within a tolerance of1/8 inch in 8 feet, without waves, cracks, blisters, pits, crazing, discoloration, projections, or other imperfections. Form plaster work carefully around angles and contours, and well-up to screeds. Take special care to prevent sagging and consequent dropping of applications. There must be no visible junction marks in finish coat where one day's work adjoins another.
Plastered surfaces to receive rubber or vinyl base coves wood base boards must extend to wood ground indicated as backing for base. Plaster not required behind built-in cabinets and equipment.
3.2.3 Control And Expansion Joints
Install control joints at locations indicated before applying gypsum plaster. Vertical joints must be continuous and butt horizontal joints against the vertical joints. Check expansion, control joints and accessories to ensure unrestrained movement, metal lath not continuous behind the joints, and area between joints do not exceed 150 square feet.
3.2.4 Curing
3.2.4.1 Gypsum Plaster
Before the plaster has set, provide environmental controls to prevent the plaster from drying too fast. After the plaster has set, provide for rapid drying to develop high strength.
3.3 GYPSUM PLASTER WORK
ASTM C 842.
3.3.1 Gypsum Plaster Thickness Requirements
Plaster thicknesses are from face of metal lath plaster base (scratch coat) or solid base surfaces.
a. Vertical Surfaces
SECTION 09 23 00 Page 9
Base Types Base Coat Finish Coat Total Thickness
Metal Lath 1/2 inch 1/8 inch 5/8 inch Masonry 1/2 inch 1/8 inch 5/8 inch Concrete 1/2 inch 1/8 inch 5/8 inch Other Bases 3/8 inch 1/8 inch 1/2 inch
b. Horizontal Surfaces. Total plaster thickness for metal lath plaster, masonry and concrete bases is 5/8 inch. Total thickness of plaster for horizontal concrete surfaces is1/8 to 3/8 inch.
c. Where vertical and horizontal concrete surfaces require more than
5/8 inch and 3/8 inch, to produce required lines or surfaces, attach metal plaster base for plaster application.
3.3.2 Gypsum Plaster Basecoat Work
3.3.2.1 Gypsum Two-Coat System
Apply the first coat to cover the base with sufficient material and pressure to form a good bond on the wall or ceiling base. Before the first coat has set and without scratching or cracking the surface, apply a second coat (double back) of the same material proportion as the base coat to the screeds. Straighten to a true surface without application of water, and cross rake or scratch to receive the finish coat.
3.3.2.2 Gypsum Three-Coat System
Apply scratch coat 3/16 to 1/4 inch thick to cover the base with sufficient material and pressure to form a good bond on the wall or ceiling base. Rake or scratch the surface and allow to set firm and hard. Apply the brown coat to bring the base coat out to the screeds, compact and straighten to a true surface without the application of water, and cross rake or scratch to receive the finish coat.
3.3.3 Gypsum Plaster Finish Coats
Moderately moisten or fog spray base coat of plaster that has become dry before finish coat is applied. Accelerate plaster, if necessary, to provide a setting time of not more than 4 hours from the time the plaster is mixed.
3.3.3.1 Lime-Putty and Gypsum-Gauged Finish Coats
Apply lime-putty gypsum-gauged finish white coat or aggregated white coat and high strength gypsum gauged finish over the base coat, scratch in thoroughly, lay on well, double back, and fill out to a true, even surface.
Allow the finish to dry a few minutes, then trowel well with water. Apply maximum pressure in order to compact the finish coat and provide a smooth finish free from blemishes and irregularities. Apply trowel finish coats of gypsum-gauged lime-putty over properly prepared base coats as thin as possible and 1/16 to 1/8 inch thick for conventional plaster system, except as necessary in spots to level out hollows in base coat.
3.3.3.2 Keene's Cement Lime-Putty Finish Coat
SECTION 09 23 00 Page 10
Apply finish over gypsum-sand base coat only, scratch in thoroughly, lay on well, double back, and fill out to a true, even surface. Allow the finish to dry a few minutes, then trowel it well with water. Apply maximum pressure in order to compact the finish coat and provide a smooth finish free of blemishes and irregularities. Continue troweling until the finish sets.
3.3.3.3 Gypsum Sand Float Finish Coat
Apply finish over the base coat, scratch in thoroughly, lay on with a trowel to an even surface, and then float with floats to a true, even surface, free of slick spots or other blemishes. Apply sand float finishes to a maximum thickness of 1/8 inch except as necessary to level out hollow spots.
3.3.3.4 Acoustical Plaster Finish Coat
Apply finish in accordance with manufacturer's printed instructions and in the thickness necessary to provide the sound absorption coefficient specified, but not be less than 1/2 inch thick.
3.4 ORNAMENTAL PLASTER WORK
Complete ornamental work before the finish coat of plaster is applied to adjoining areas. Plaster for ornamental work must consist of a mixture that will produce satisfactory results for the respective conditions, be reinforced properly with fiber or zinc-coated steel wire netting as necessary to provide permanent construction, and be rigidly secured in place. Run plain moldings in place to templates and guides, with true radial lines for curved work; where it is not practicable to run such moldings, cast or run them on a bench and then secure in place firmly.
Cornices and moldings must be straight or curved, true to line, and corners neat.
3.5 PATCHING AND POINTING
Cut out and patch loose, cracked, damaged, or defective gypsum plaster.
Patch must match existing work in texture, color and finish flush with previously applied gypsum plaster surfaces. Point work abutting or adjoining finish work in a neat manner. Remove droppings or spatterings from surfaces. Leave clean and in a condition to receive paint or other finish. Remove protective covering from floors and other surfaces, and rubbish and debris from the interior and exterior of the building.
SECTION 09 23 82 Page 1
SECTION 09 23 82
FIREPROOF GYPSUM PLASTERING
The publications listed below form a part of this specification to the
ASTM E 119 (2008) Standard Test Methods for Fire Tests of
Building Construction and Materials
ASTM E 84 (2008a) Standard Test Method for Surface Burning
Characteristics of Building Materials
INTERNATIONAL CODE COUNCIL (ICC)
ICC IBC (2006; Errata 2006; Errata 2007; Supplement 2007;
Errata 2007) International Building Code submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that
Submit installation drawings for Fireproof Plaster in accordance with the paragraph entitled, "Application," of this section.
Submit manufacturer's catalog data for Fireproof Plaster showing applicable flame spread classification, fuel contribution, and smoke developed.
Not less than 1/2 pound of Fireproofing Plaster mix.
SD-07 Certificates
Submit certificates for Fireproof Plaster showing conformance with the ICC IBC, "International Building Code," "Requirements for Four- Hour Construction."
SD-08 Manufacturer's Instructions
Submit manufacturer's instructions for Fireproof Plaster including special provisions required to install equipment components and
SECTION 09 23 82 Page 2 system packages. Indicate all detail impedances, hazards and safety precautions on drawings.
1.3 DELIVERY, HANDLING, AND STORAGE
Deliver materials in original unopened packages bearing the name of the product, manufacturer's name, and the Underwriters Laboratories, Inc. label.
Store materials off the ground, under cover, and away from damp surfaces and keep dry until ready to use. Discard all materials that has been exposed to water before use.
2.1.1 Fireproof Plaster
Provide gypsum-vermiculite fire-proof plaster mix, consisting of one part gypsum to two parts vermiculite. Plaster must comply with ICC IBC, "International Building Code," "Requirements for 4-Hour Construction."
Cohesion of the dry set material must be such that the fireproofing coat will not crack or delaminate when the structural element is subjected to a downward deflection of 1/120 of the span.
Minimum compressive strength requirement is not less than 70 pounds per square inch.
When tested in accordance with ASTM E 84, the set and dry material must yield the following characteristics:
Flame spread: 10 Fuel contributed: 5 Smoke developed: 0
2.1.2 Water
Use only potable water for mixing.
3.1 INSTALLATION
3.1.1 General Requirements
Apply fireproofing plaster as specified to those areas indicated on drawings. Install per details as indicated.
3.1.2 Application
Application of fireproofing plaster must be or troweled in accordance with material manufacturer's written recommendations. Provide thickness of application as indicated and in compliance with the applicable codes to provide rated fireproofing when tested in accordance with ASTM E 119.
SECTION 09 23 82 Page 3
Framing and furring must be as recommended by manufacturer for the installation of the fireproofing plaster thickness required or as indicated in the drawings.
3.2 ACCEPTANCE PROVISIONS
After completion of fireproofing work, remove all application equipment.
Clean all areas of ceilings, walls, and floors, adjacent or exposed to the operations of application of the fireproofing material, and other surfaces and finishes that may have been soiled by fireproofing materials.
Remove any damaged or unacceptable portions of the fireproofing plaster and replace with new work at no additional cost to the Government.
SECTION 09 24 23 Page 1
SECTION 09 24 23
STUCCO
The publications listed below form a part of this specification to the
ASTM A 185/A 185M (2007) Standard Specification for Steel Welded Wire
Reinforcement, Plain, for Concrete
ASTM C 1032 (2006) Standard Specification for Woven Wire Plaster
Base
ASTM C 1063 (2007) Standard Practice for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
ASTM C 150 (2007) Standard Specification for Portland Cement
ASTM C 206 (2003) Standard Specification for Finishing Hydrated
Lime
ASTM C 841 (2003) Installation of Interior Lathing and Furring
ASTM C 847 (2006) Standard Specification for Metal Lath
ASTM C 897 (2005) Aggregate for Job-Mixed Portland Cement-Based
Plasters
ASTM C 926 (2006) Application of Portland Cement-Based Plaster
ASTM C 933 (2007b) Welded Wire Lath
ASTM D 1784 (2007) Standard Specification for Rigid Poly(Vinyl
Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that
Lath
Drawings showing details of construction for reinforcement, furring, and grounds; including manufacturer's installation
SECTION 09 24 23 Page 2 instructions for stucco materials, and locations where each mix and coating thickness will be used.
Materials
Detailed description of the proposed job-mix proportions for base and finish coats; including identification of thickness of coats.
Colored Stucco Finish Coat
Samples including both a fabricated portion of unit of work and color samples.
Sample Panel
Sample panel, as specified.
1.3 DELIVERY AND STORAGE
Packaged materials shall be delivered to the site in the original packages and containers with labels intact and seals unbroken. Cementitious materials shall be kept dry and stored off the ground under cover away from damp surfaces until ready to be used. Aggregate shall be covered to prevent the absorption or loss of moisture.
1.4 ENVIRONMENTAL CONDITIONS
Stucco shall not be applied when the ambient temperature is 40 degrees F or lower, or when a drop in temperature below 40 degrees F is expected within 48 hours after application.
1.5 SAMPLE PANEL
The contractor shall submit: One 12 inch square stucco panel showing finish texture and color and exposed reinforcement at the edges, one 12 inch square of reinforcement, and a 12 inch length of each accessory proposed, prior to proceeding with stucco work. A sample panel of stucco, constructed at the jobsite, and located as directed, to demonstrate installation procedures, texture and color, prior to proceeding with any stucco work. Panel size shall be a minimum of 4 feet wide by 8 feet high; shall contain each type accessory proposed for use and shall be constructed in the vertical position. Sample panel shall have exposed reinforcement at the edges. Each phase of installation such as framing, scratch coat, brown coat, finish coat and curing procedures shall be demonstrated in the construction of the panel. One 12 inch square of reinforcement and one 12 inch length of each accessory proposed for use, shall be submitted prior to constructing the sample panel.
2.1 PORTLAND CEMENT
SECTION 09 24 23 Page 3
Portland cement shall conform to ASTM C 150, gray Portland cement Type I. or white Portland cement, Type I.
2.2 COLORED STUCCO FINISH COAT
Colored stucco finish coat shall be a mill mixed product using white Portland cement and requiring only the addition of and mixing with water for application. Color shall be as indicated.
2.3 LIME
Lime shall conform to ASTM C 206, Type S.
2.4 SAND
Sand aggregate for job-mixed base coat and job-mixed finish coat stucco shall conform to ASTM C 897.
2.5 ACCESSORIES
Accessories shall be roll formed galvanized steel, or rigid polyvinyl chloride (PVC), except that cornerite and striplath shall be formed from steel sheets with manufacturer's standard galvanized coating. Vinyl members shall be in accordance with ASTM D 1784. Welded wire corner reinforcements shall be zinc coated, galvanized 17 gauge steel wire conforming to ASTM A 185/A 185M. Furring shall include hangers, bolts, inserts, clips, fastenings, and attachments of number, size, and design to develop the full strength of the members.
2.6 STEEL FRAMING
Steel framing shall be as shown and shall be manufacturers standard products with shop applied protective coating.
2.7 METAL LATH
Metal lath shall conform to ASTM C 847, types and weights in accordance with the various spacing shown in ASTM C 841. Lath for vertical application on steel and wood framing supports shall be expanded metal or welded or woven wire and shall have paper backing with a minimum vapor permeance of 5 perms.
Woven wire lath shall be a maximum 1-1/2 x 1-1/2 inch mesh wire of not less than 0.0540 inch nominal diameter and shall conform to ASTM C 1032. Welded wire lath shall conform to ASTM C 933, with openings not to exceed 2 x 2 inches. Expanded metal or wire lath shall be fabricated in a manner to provide not less than 1/4 inch keying between wire and paper backing and keying shall be obtained by a uniform series of slots in a perforated face paper woven between the wires.
2.8 WATER
Water shall be clean, fresh, potable, and free from amounts of oils, acids, alkalis and organic matter that would be injurious to the stucco.
3.1 FRAMING
SECTION 09 24 23 Page 4
Framing shall be installed as indicated.
3.2 CONTROL JOINTS
Control joints shall be located as indicated on the drawings. Prefabricated control joint members shall be installed prior to the application of the stucco. Control joints shall be cleared of all stucco within the control area after stucco application and prior to final stucco set.
3.3 LATH
Lath shall be installed in accordance with ASTM C 841 or ASTM C 1063 except as otherwise specified. Metal and wire lath shall be applied straight, without buckles and with joints staggered. End laps of metal lath shall be not less than 1 inch. When paper-backed lath is used, the paper shall be split from the lath at all lap areas to provide a paper to paper and lath to lath lap. Horizontal joints shall be shiplapped. Lath shall be interrupted at all control joints.
3.3.1 Steel and Wood Supports
Metal lath without integral backing over vertical open or solid wood and steel backing frame construction shall be applied only after a backing of shiplapped waterproofed building paper or other approved material has been applied to the area to receive the stucco. Lath shall be secured to the wood frames with nails or staples spaced not over 6 inches on centers along each support; and where sheets of lath are lapped, fasteners shall be driven so as to hold both lapped edges securely in place. Lath shall be secured to steel frames in accordance with ASTM C 841 or ASTM C 1063, as applicable.
3.3.2 On Concrete and Masonry
Lath shall be fastened every 8 inches vertically and every 16 inches horizontally. Where wood supports adjoin masonry or concrete in the same direction, casing bead, control joints, or reinforcement shall be provided as indicated.
3.3.3 Over Metal Lintels and Flashings
Lath over metal lintels shall be extended vertically over the angles to a height of not less than 6 inches and horizontally across the underside of the lintels and shall be secured in an approved manner. Lath over metal flashings shall lap the flashings not less than 2 inches and shall be extended vertically for a height of not less than 6 inches.
3.3.4 Special Shapes, Profiles, and Contours
Special shapes, profiles, and contours shall be formed with wood, metal or aluminum furring and reinforcing.
3.4 FURRING
Furring shall be installed to true lines and surfaces and shall be rigidly supported and secured in place.
3.5 PREPARATION OF SURFACES
SECTION 09 24 23 Page 5
Preparation of surfaces for application of stucco to solid bases such as stone, masonry or concrete shall conform to the…
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