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Standard 506 Edition 14 Edition Date. June 02 DOD Approved. Shaft Wall Limiting Heights Spans Usg Greater than 5-4 use UL Design K504 per details on page 24.. Com Ul design k504 and k506 Keyword Found Websites Listing Keyword-suggest-tool.

703.2.5 Exterior bearing walls.. In determining the fire-resistance rating of exterior bearing walls, compliance with the ASTM E119 or UL 263 criteria for unexposed surface temperature rise and ignition of cotton waste due to passage of flame or gases is required only for a period of time corresponding to the required fire-resistance rating of an exterior nonbearing wall with the same fire

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The UL Certification Mark on fire resistant products, systems and assemblies is relied on by code enforcement officials and buyers to provide confidence that products and systems meet regulatory and market requirements. It is a key differentiator for products within the exterior wall assembly market.

shaped studs secured together with steel screws spaced a maximum 12 in. OC. F abricated from min 25 MSG (min 20 MSG when Item 2D, 4A, 4B or 7 is used) galv steel, min 2-1/2 in. deep (min 4 in. deep when S ystem C is used), with one leg 1 in. long and two legs 3/4 in. long. Shorter legs 1 in. apart to engage gypsum liner panels.

Our testing services assess compliance to UL Solutions and industry standards, including: UL 263/ASTM E119 & BS476 Fire Resistance Rating. Smoke Leakage Testing. Our advisory

6/23 · UL design G586 can span 8’-0” from wall to wall or indefinitely when used in conjunction with the hanger assembly. For 1-hour assemblies, National Gypsum developed

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