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Fire-retardant materials should not be confused with fire-resistant materials. A fire resistant material is one which is designed to resist burning and withstand heat. An example of a fire-resistant material is one which is used in bunker gear worn by firefighters to protect them from the flames of a burning building.
Fireproof vaults to protect important paper documents are usually built using concrete or masonry blocks as the primary building material. [citation needed] In the event of a fire, the chemically-bound water within the concrete or masonry blocks is forced into the vault chamber as steam, which soaks the paper documents to keep them from igniting.
Tile was also manufactured in a series of graduated wedge shapes for installation between steel members as a fireproof flat arch floor structure, to be covered with a concrete wearing surface above. In other cases, structural clay tile was used as a permanent form material to reduce the bulk and weight of structural concrete floor slabs. [8]
A deck is also the surface used to construct a boardwalk over sand on barrier islands. Laying deck or throwing deck refers to the act of placing and bolting down cold-formed steel beneath roofing and concrete floors. This is usually done by an ironworker, sometimes in conjunction with a cement mason or carpenter. It regarded as one of the most ...
A building under construction, showing the structurally independent cinderblock firewalls subdividing the building Building 4 of the Waynesboro Outlet Village, showing a concrete firewall running through the building Concrete firewalls still standing on Building 7 of the former Waynesboro Outlet Village, following a firefighter training exercise which intentionally burned the building
The base layer should be 6" deep for walkways, or 12" deep for driveways. [10] The base material should either be 3/4" crushed stone (to allow water to drain through it) for a 1/4" crushed stone bedding, or 3/4" minus crushed stone (to prevent sand from sinking through it) for a concrete sand bedding. The base should be compacted every 6".
Trex composite decking. WPCs do not corrode and are highly resistant to rot, decay, and marine borer attack, though they do absorb water into the wood fibers embedded within the material. [14] Water absorption is more pronounced in WFCs with a hydrophilic matrix such as PLA and also leads to decreased mechanical stiffness and strength. [15]
The Homasote base reduces the incidence of impact injuries such as shin splints caused by dancing on the concrete floor. Homasote is used in theatrical sets as a noise deadening layer for stage platforms consisting of a 3 ⁄ 4 -inch (19 mm) plywood sublayer, a 1 ⁄ 2 -inch (13 mm) Homasote layer, and a 1 ⁄ 4 -inch (6 mm) Masonite top layer.