36C25622R0094 092216 Non-Structural Metal Framing .docx
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- Solicitation number
- 502-19-107
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This document provides specifications for non-structural metal framing required for a construction project to replace an air handling unit and ductwork at a Department of Veterans Affairs health care facility in Alexandria, Louisiana. The specifications cover steel stud wall systems, fasteners, accessories, furring channels, and installation requirements. Products are to be galvanized and include steel studs and runners between 0.75 and 0.48 millimeters thick. Fasteners must meet ASTM standards and be the appropriate size and type for the materials being joined. Wall framing is to be installed according to industry standards at spacings of 24 inches or less on center with bracing and reinforcement at openings and corners as specified.
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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 22 16
NON-STRUCTURAL METAL FRAMING
PART 1 GENERAL
1.1 DESCRIPTION
This section specifies steel studs wall systems, fasteners, and accessories for the screw attachment of gypsum board, plaster bases or other building boards.
1.2 RELATED WORK
| A. | Exterior framing for stucco: Section 05 40 00, COLD-FORMED METAL FRAMING. |
| B. | Ceiling suspension systems for acoustical tile or panels and lay in gypsum board panels: 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 walkon floors the underside of the walkon floor is the underside of structure overhead. |
| C. | Thickness of steel specified is the minimum bare (uncoated) steel thickness. |
1.4 SUBMITTALS
| A. | Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. |
| B. | Manufacturer's Literature and Data: |
| 1. | Studs, runners, and accessories. |
| 2. | Hanger inserts. |
| 3. | Channels (Rolled steel). |
| 4. | Furring channels. |
| 5. | Screws, clips, and other fasteners. |
| C. | Shop Drawings: |
| 1. | Typical ceiling suspension system. |
| 2. | Typical metal stud and furring construction system including details around openings and corner details. |
| 3. | Typical shaft wall assembly |
| 4. | Typical fire rated assembly and column fireproofing showing details of construction same as that used in fire rating test. |
| D. | Test Results: Fire rating test designation, each fire rating required for each assembly. |
1.5 DELIVERY, IDENTIFICATION, HANDLING AND STORAGE
In accordance with the requirements of ASTM C754.
1.6 APPLICABLE PUBLICATIONS
| A. | The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. |
| B. | American Society for Testing and Materials (ASTM) |
| A641-09 | Zinc-Coated (Galvanized) Carbon Steel Wire |
| A653/653M-11 | Specification for Steel Sheet, Zinc Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by Hot-Dip Process. |
| C11-10 | Terminology Relating to Gypsum and Related Building Materials and Systems |
| C635-07 | Manufacture, Performance, and Testing of Metal Suspension System for Acoustical Tile and Layin Panel Ceilings |
| C636-08 | Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Layin 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 G40 or equivalent.
2.2 STEEL STUDS AND RUNNERS (TRACK)
| A. | ASTM C645, modified for thickness specified and sizes as shown. |
| 1. | Use C 645 steel, 0.75 mm (0.0296-inch) minimum base-metal (30 mil). |
| 2. | Runners same thickness as studs. |
3. Exception: Members that can show certified third-party testing with gypsum board in accordance with ICC ES AC86 (Approved May 2012) need not meet the minimum thickness limitation or minimum section properties set forth in ASTM C 645. The submission of an evaluation report is acceptable to show conformance to this requirement. Use C 645 steel, 0.48mm (0.019 inch) minimum base-metal (19 mil).
| B. | Provide not less than two cutouts in web of each stud, approximately 300 mm (12 inches) from each end, and intermediate cutouts on approximately 600 mm (24inch) centers. |
| C. | Doubled studs for openings and studs for supporting concrete backerboard. |
| D. | Studs 3600 mm (12 feet) or less in length shall be in one piece. |
2.3 FASTENERS, CLIPS, AND OTHER METAL ACCESSORIES
| A. | ASTM C754, except as otherwise specified. |
| B. | Fasteners for steel studs thicker than 0.84 mm (0.033inch) thick. Use ASTM C954 steel drill screws of size and type recommended by the manufacturer of the material being fastened. |
| C. | 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. |
| D. | Concrete ceiling hanger inserts (anchorage for hanger wire and hanger straps): Steel, zinccoated (galvanized), manufacturers standard items, designed to support twice the hanger loads imposed and the type of hanger used. |
| E. | Tie Wire and Hanger Wire: |
| 1. | ASTM A641, soft temper, Class 1 coating. |
| 2. | Gage (diameter) as specified in ASTM C754 or ASTM C841. |
| F. | Power Actuated Fasteners: Type and size as recommended by the manufacturer of the material being fastened. |
PART 3 EXECUTION
3.1 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 3/8inch) 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. | 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 (3/8inch) 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. |
| F. | 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. |
3.2 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 furringStud System: |
| 1. | Framed with 63 mm (21/2 inch) or narrower studs, 600 mm (24 inches) on center. |
| 2. | Brace as specified in ASTM C754 for Wall FurringStud 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 poweractuated 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. |
3.3 INSTALLING SUPPORTS REQUIRED BY OTHER TRADES
| A. | Provide for attachment and support of electrical outlets and other items 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. |
3.4 TOLERANCES
| A. | Fastening surface for application of subsequent materials shall not vary more than 3 mm (1/8inch) from the layout line. |
| B. | Plumb and align vertical members within 3 mm (1/8inch.) |
| C. | Level or align ceilings within 3 mm (1/8inch.) |
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