Cold Form Metal Framing Catalog - (Page 45) UL® FIRE RATED ASSEMBLY 8. Gypsum Board* — For all ratings except the 2 Hr Assembly Ratings — One layer of nom 5/8 in. thick by 48 in. wide boards, installed with long dimension parallel to trusses. Attached to the resilient channels using 1 in. long Type S bugle-head screws spaced 12 in. OC along butted end-joints and 12 in. OC in the field. For the 2 Hr Ratings — Two layers of nom 5/8 in. thick by 48 in. wide boards, installed with long dimension parallel to trussses. Base layer attached as described above. Face layer attached to the resilient channels using 1-5/8 in. long Type S bugle-head screws spaced 12 in. OC along butted end-joints and 12 in. OC in the field. Screws staggered from base layer screws. Face layer side and end joints offset a minimum 16 in. from base layer side and end joints. CANADIAN GYPSUM COMPANY — Types C, IP-X2, IPC-AR. UNITED STATES GYPSUM CO — Types C, IP-X2, IPC-AR. USG MEXICO S A DE C V — Types C, IP-X2, IPC-AR. 9. Finishing System — (Not Shown) — Vinyl, dry of premixed joint compound, applied in two coats to joints and screw heads, paper tape, 2 in. wide, embedded in first layer of compound over all joints. Alternate Ceiling Membrane — Not shown. 10. Steel Framing Members — a. Main runners — Installed perpendicular to Structural Steel Members, - Nom 12 ft long, 15/16 in. or 1-1/2 in. wide face, spaced 4 ft OC. Main runners hung a min of 2 in. from bottom chord of Structural Steel Members with 12 SWG galv steel wire. Wires located a max of 48 in. OC. b. Cross tees or channels — Nom 4 ft long, 15/16 in. or 1-1/2 in. wide face or cross channels, nom 4 ft long, 1-1/2 in. wide face, installed perpendicular to the main runners, spaced 16 in. OC. Additional cross tees or channels used at 8 in. from each side of butted wallboard end joints. The cross tees or channels may be riveted or screw-attached to the wall angle or channel to facilitate the ceiling installation. c. Wall angles or channels — Used to support steel framing member ends and for screw-attachment of the gypsum wallboard - Painted or galvanized steel angles with 1 in. legs or channels with 1 in. legs and 1-9/16 in. deep, attached to walls at perimeter of ceiling with fasteners 16 in. OC. 11. Gypsum Board* — For use with Steel Framing Members (Item 10) - For the 1 and 1-1/2 hr ratings - One layer of nom 5/8 in. thick by 48 in. wide boards, installed with long dimension parallel to the main runners. Wallboard fastened to each cross tee or channel with five wallboard screws, with one screw located at the midspan of the cross tee or channel, one screw located 12 in. from and on each side of the cross tee or channel mid span and one screw located 1-1/2 in. from each wallboard side joint. Except at wallboard end joints, wallboard screws shall be located on alternating sides of cross tee flange. At wallboard end joints, wallboard screws shall be located 1/2 in. from the joint. Wallboard fastened to main runners with wallboard screws 1/2 in. from side joints, midway between intersections with cross tees or channels (16 in. OC). End joints of adjacent wallboard sheets shall be staggered not less than 32 in. Wallboard sheets screw attached to leg of wall angle with wallboard screws spaced 12 in. OC. Joints treated as described in Item 8. For the 2 hr rating - Two layers of nominal 5/8 in. thick by 48 in. wide boards. Inner layer installed with long dimension perpendicular to cross tees with side joints centered along main runners and end joints centered along cross tees. Inner layer fastened to cross tees with 1-1/4 in. long Type S bugle-head steel screws spaced 8 in. OC along buted end joints and 12 in. OC in the field of the board. End joints of adjacent wallboard sheets shall be staggered not less than 4 ft OC. Outer layer attached to the cross tees through inner layer using 1-7/8 in. long Type S bugle-head steel screws spaced 8 in. OC at butted end joints and 12 in. OC in the field. Butted end joints to be centered along cross tees and be offset a min of 32 in. from end joints of inner layer. Rows of screws on both sides of butted end joints of each layer shall be located 3/8 to 1/2 in. from end joints. Butted side joints of outler layer to be offset a min of 18 in. from butted side joints of inner layer. Joints treated as described in Item 8. CANADIAN GYPSUM COMPANY — Type C or IP-X2 UNITED STATES GYPSUM CO — Type C or IP-X2 USG MEXICO S A DE C V — Type C or IP-X2 *Bearing the UL Classification Mark cold-formed, galvanized steel chord and web sections. Trusses fabricated in various sizes, depths and from various steel thicknesses. Trusses spaced a max of 48 in. OC. AEGIS METAL FRAMING L L C — UltraSpan, Pre-fabricated Light Gauge Steel Truss System 2. Bridging — (Not Shown) — Location of lateral bracing for truss chord and web sections to be specified on truss engineering. 3. Roof system* — Any UL Class A, B or C Roofing System (TGFU) or Prepared Roof Covering (TFWZ) acceptable for use over nom 23/32 in. thick wood structural panels, min grade "C-D" or "Sheathing" . Nom 23/32 in. thick wood structural panels mechanically fastened to top chord of steel trusses with fasteners spaced a max of 12 in. OC. As an option, the wood structural panels may be installed to min 20 ga. steel purlins or steel hat channels. Steel purlins or hat channels to be spaced a max 24 in. OC and welded or mechanically fastened, transverse to steel roof trusses (Item 1). 3A. Steel Roof Deck — Not Shown — In lieu of, or in addition to the wood structural panels described in Item 3, the steel roof deck may consist of corrugated or fluted steel form units, minimum 9/16 in. deep, 22 MSG painted or galv steel, welded or mechanically fastened at a max. 12 in. OC to the top chord of the roof trusses (Item 1). When used in addition to the wood structural panels described in Item 3, Batts and Blankets (Item 8) is optional. When used lieu of the wood structural panels described in Item 3, Batts and Blankets (Item 8) must be used and the Class A, B or C Roofing System must include a min 3/4 in. thickness of roof insulation or 1/2 in. thickness of Classified or unclassified gypsum boards. If polystyrene roof insulation is used, it must be installed on top of a min 1/2 in. thickness of Classified or unclassified gypsum boards . 3B. Steel Floor and Form Units* — As an alternate to Item 3A — min 25 MSG painted or galv units welded or mechanically fastened max 12 in. OC to the top chord of trusses (Item 1). When used in addition to the wood structural panels described in Item 3, Batts and Blankets (Item 8) is optional. When used lieu of the wood structural panels described in Item 3, Batts and Blankets (Item 8) must be used and the Class A, B or C Roofing System must include a min 3/4 in. thickness of roof insulation or 1/2 in. thickness of Classified or unclassified gypsum boards. If polystyrene roof insulation is used, it must be installed on top of a min 1/2 in. thickness of Classified or unclassified gypsum boards. LOADMASTER SYSTEMS INC — Types HD, ED or PS. UL® FIRE RATED ASSEMBLIES UL® FIRE RATING: P523 ULC R501 1. Structural Steel Members* — Pre-fabricated light-gauge steel truss system consisting of Toll Free: 1.866.90.AEGIS . 314.851.2200 . FAX: 314.434.5234 www.aegismetalframing.com . Email: answers@aegismetalframing.com 45 http://www.aegismetalframing.com http://www.aegismetalframing.com
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