36C25622R0094 092900 Gypsum Board .docx
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- Solicitation number
- 502-19-107
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This technical specification outlines requirements for gypsum board installation and finishing for the replacement of Air Handling Unit 104 and associated ductwork at the Department of Veterans Affairs Health Care System in Alexandria, Louisiana. Key details include specifying 5/8 inch thick gypsum board with 100 percent post-consumer recycled paper facing, installation in accordance with ASTM standards to extend from floor to structure overhead on room-facing partitions without suspended ceilings. Accessories, fasteners, and finishing materials are also defined meeting additional ASTM standards, with Level 4 finish required for all public areas.
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Text version
REPLACE AHU #104 AND DUCTWORK BLDG. 7
DEPARTMENT OF VETERANS AFFAIRS HEALTH CARE SYSTEM-ALEXANDRIA, LA
PROJECT NO.: 502-19-107
SECTION 09 29 00
GYPSUM BOARD
PART 1 - GENERAL
1.1 DESCRIPTION
This section specifies installation and finishing of gypsum board.
1.2 RELATED WORK
A. Installation of steel framing members for partitions, Section 09 22 16, NON-STRUCTURAL METAL FRAMING.
1.3 TERMINOLOGY
| A. | Definitions and description of terms shall be in accordance with ASTM C11, C840, and as specified. |
| B. | Underside of Structure Overhead: In spaces where steel trusses or bar joists are shown, the underside of structure overhead shall be the underside of the floor or roof construction supported by the trusses or bar joists. |
| C. | "Yoked": Gypsum board cut out for opening with no joint at the opening (along door jamb or above the door). |
1.4 SUBMITTALS
| A. | Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. |
| B. | Manufacturer's Literature and Data: |
| 1. | Cornerbead and edge trim. |
| 2. | Finishing materials. |
| 3. | Gypsum board, each type. |
| C. | Shop Drawings: |
| 1. | Typical gypsum board installation, showing corner details, edge trim details and the like. |
| D. | Samples: |
| 1. | Cornerbead. |
| 2. | Edge trim. |
| 3. | Control joints. |
| E. | Certificates: Certify that gypsum board types, gypsum backing board types, cementitious backer units, and joint treating materials do not contain asbestos material. |
1.5 DELIVERY, IDENTIFICATION, HANDLING AND STORAGE
In accordance with the requirements of ASTM C840.
1.6 ENVIRONMENTAL CONDITIONS
In accordance with the requirements of ASTM C840.
1.7 APPLICABLE PUBLICATIONS
| A. | The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. |
| B. | American Society for Testing And Materials (ASTM): |
| C11-15 | Terminology Relating to Gypsum and Related Building Materials and Systems |
| C475-15 | Joint Compound and Joint Tape for Finishing Gypsum Board |
| C840-13 | Application and Finishing of Gypsum Board |
| C919-12 | Sealants in Acoustical Applications |
| C954-15 | Steel Drill Screws for the Application of Gypsum Board or Metal Plaster Bases to Steel Stud from 0.033 in. (0.84mm) to 0.112 in. (2.84mm) in thickness |
| C1002-14 | Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs |
| C1047-14 | Accessories for Gypsum Wallboard and Gypsum Veneer Base |
| C1396-14 | Gypsum Board |
| C. | Inchcape Testing Services (ITS): |
| Latest Editions | Certification Listings |
PART 2 - PRODUCTS
2.1 GYPSUM BOARD
| A. | Gypsum Board: ASTM C1396, 16 mm (5/8 inch) thick unless shown otherwise. |
| B. | Paper facings shall contain 100 percent post-consumer recycled paper content. |
2.2 ACCESSORIES
| A. | ASTM C1047, except form of 0.39 mm (0.015 inch) thick zinc coated steel sheet or rigid PVC plastic. |
| B. | Flanges not less than 22 mm (7/8 inch) wide with punchouts or deformations as required to provide compound bond. |
2.3 FASTENERS
| A. | ASTM C1002 and ASTM C840, except as otherwise specified. |
| B. | ASTM C954, for steel studs thicker than 0.04 mm (0.33 inch). |
| C. | Select screws of size and type recommended by the manufacturer of the material being fastened. |
| D. | Clips: Zinc-coated (galvanized) steel; gypsum board manufacturer's standard items. |
2.5 FINISHING MATERIALS AND LAMINATING ADHESIVE
ASTM C475 and ASTM C840. Free of antifreeze, vinyl adhesives, preservatives, biocides, and other VOC. Adhesive shall contain a maximum VOC content of 50 g/l.
PART 3 - EXECUTION
3.1 GYPSUM BOARD HEIGHTS
| A. | Extend all layers of gypsum board from floor to underside of structure overhead on following partitions and furring: |
| 1. | One side of partitions or furring: |
| a. | Room side of room without suspended ceilings. |
| B. | In locations other than those specified, extend gypsum board from floor to heights as follows: |
| 1. | Not less than 100 mm (4 inches) above suspended acoustical ceilings. |
| 2. | At existing ceilings. |
3.2 INSTALLING GYPSUM BOARD
| A. | Coordinate installation of gypsum board with other trades and related work. |
| B. | Install gypsum board in accordance with ASTM C840, except as otherwise specified. |
| C. | Use gypsum boards in maximum practical lengths to minimize number of end joints. |
| D. | Bring gypsum board into contact, but do not force into place. |
| E. | Walls (Except Shaft Walls): |
| 1. | When gypsum board is installed parallel to framing members, space fasteners 300 mm (12 inches) on center in field of the board, and 200 mm (8 inches) on center along edges. |
| 2. | When gypsum board is installed perpendicular to framing members, space fasteners 300 mm (12 inches) on center in field and along edges. |
| 3. | Stagger screws on abutting edges or ends. |
| 4. | For single-ply construction, apply gypsum board with long dimension either parallel or perpendicular to framing members as required to minimize number of joints except gypsum board shall be applied vertically over "Z" furring channels. |
F. Electrical and Telecommunications Boxes:
1. Seal annular spaces between electrical and telecommunications receptacle boxes and gypsum board partitions.
| G. | Accessories: |
| 1. | Set accessories plumb, level and true to line, neatly mitered at corners and intersections, and securely attach to supporting surfaces as specified. |
| 2. | Install in one piece, without the limits of the longest commercially available lengths. |
| 3. | Corner Beads: |
| a. | Install at all vertical and horizontal external corners and where shown. |
| b. | Use screws only. Do not use crimping tool. |
| 4. | Edge Trim (casings Beads): |
| a. | At both sides of expansion and control joints unless shown otherwise. |
| b. | Where gypsum board terminates against dissimilar materials and at perimeter of openings, except where covered by flanges, casings or permanently built-in equipment. |
| c. | Where gypsum board surfaces of non-load bearing assemblies abut load bearing members. |
| d. | Where shown. |
3.3 FINISHING OF GYPSUM BOARD
| A. | Finish joints, edges, corners, and fastener heads in accordance with ASTM C840. Use Level 4 finish for al finished areas open to public view. |
| B. | Before proceeding with installation of finishing materials, assure the following: |
| 1. | Gypsum board is fastened and held close to framing or furring. |
| 2. | Fastening heads in gypsum board are slightly below surface in dimple formed by driving tool. |
| C. | Finish joints, fasteners, and all openings, including openings around penetrations, on that part of the gypsum board extending above suspended ceilings to seal surface of non-decorated gypsum board construction. |
3.4 REPAIRS
| A. | After taping and finishing has been completed, and before decoration, repair all damaged and defective work, including nondecorated surfaces. |
| B. | Patch holes or openings 13 mm (1/2 inch) or less in diameter, or equivalent size, with a setting type finishing compound or patching plaster. |
| C. | Repair holes or openings over 13 mm (1/2 inch) diameter, or equivalent size, with 16 mm (5/8 inch) thick gypsum board secured in such a manner as to provide solid substrate equivalent to undamaged surface. |
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