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1/2-inch drywall: ... The thickest type of drywall, 5/8-inch drywall is often fire resistant and is the best choice for soundproofing. It's also great for ceiling applications because it can help ...
8-inch (200 mm) hollow CMU (concrete masonry unit) with 1 + 1 ⁄ 2-inch (38 mm) wood furring, 1 + 1 ⁄ 2-inch fiberglass insulation and 1 ⁄ 2-inch (13 mm) drywall on each side [35] 55 Double layer of 1 ⁄ 2-inch (13 mm) drywall on each side, on staggered wood stud wall, batt insulation in wall 59
The Life Safety Code (NFPA 101) [5] and Section 803.1 of the International Building Code limit finishes for interior walls and ceilings to materials in three classes (A, B, or C, with A being the lowest flame spread and C being the highest) and gives greater restrictions for certain rooms:
In the United Kingdom, after two significant construction fires which resulted in a combined loss of £1,500 million, The Joint Code of Practice was introduced by the Fire Protection Association (FPA), the UK's national fire safety organisation, [1] to prevent fires on buildings undergoing construction work.
Lengths up to 16 feet (4.9 m) are common; the most common is 8 feet (2.4 m). Common thicknesses are 1 ⁄ 2 and 5 ⁄ 8 inch (13 and 16 mm); thicknesses of 1 ⁄ 4, 3 ⁄ 8, 3 ⁄ 4, and 1 inch (6, 10, 19, and 25 mm) are used in specific applications. In many parts of Canada, drywall is commonly referred to as Gyproc.
Metal lath and plaster walls can be twice as resistant to fire as drywall, and are capable of achieving a two-hour fire rating with a 2-inch-thick (5.1 cm) assembly. Two inches of plaster and lath can also achieve the same decibel rating as 4 + 7 ⁄ 8 inches (12 cm) of drywall. [15]
This rating is the requirement in data safes and vault structures for protecting digital information on magnetic media or hard drives. Temperatures inside the protected chamber must be held below 125 °F (52 °C) for the time period specified, such as Class 125-2 Hour, with temperatures up to 2,000 °F (1,090 °C) outside the vault.
John J. Keetch, a fire researcher in the southeast, wrote that "One of the prime objectives of the National Fire Danger Rating System (NFDRS) is to provide as accurate a measure as possible of the relative seriousness of burning conditions and thereby, NFDRS can serve as an aid to fire control programs." [1] In 1954 there were eight different ...
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