To address these requirements, MBMA conducted fire tests at Underwriters Laboratory (UL), Intertek, and FM Global that showed metal buildings can easily comply with one- and two-hour …

Fire-RatedFire-resistance ratings have long been used by UL, ASTM and building codes to measure the performance of various constructions for fire containment purposes. As applied to …

Any 5/8 in. thick UL Classified Gypsum Board that is eligible for use in Design Nos. L501, G512 or U305. Nom 1/2 in. or 5/8 in. thick gypsum board. Applied in layers as noted in the above …

use of UL Certified products, equipment, system, devices, and materials. Authorities Having Jurisdiction should be consulted before construction. Fire resistance assemblies and products …

um board enclosures, such as UL Design No. X524. However, a recent study, sponsored by the Metal Building Manufacturers Association (MBMA), determined that it is also feasible to use …

2019年8月29日 · When fire protection of metal building frames is required by the building code, the assemblies have historically been gypsum board enclosures, such as UL Design No. …

bearing the UL Classification Marking as to Fire Resistance. See Floor- and Roof-Topping Mixtures (CCOX) category for names of Classified Companies. Refer to the manufacturer’s …

This new assembly, known as UL W404 contains several prominent attributes and increases the total number of fire resistive assemblies sponsored by MBMA to 13. UL W404 preserves the …

2019年10月2日 · 4A, any 2-1/2 in., thick glass fiber batt material bearing the UL Classification Marking as for Fire Resistance, glass fiber batt to be compressed to completely fill the cavity …

2013年3月26日 · The MBMA fire tests of exterior walls in 1997 resulted in a new UL Design, No. V421, which provides 1 and 2-hour fire resistance ratings for exterior walls in metal buildings. …