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Newer materials and methods have been developed to resolve this issue. The following lists both older and newer methods of fireproofing steel beams : [7] complete encasement in concrete square column. [8] wrapping the i-beam in a thin layer of metal lath and then covering it with gypsum plaster.
Penetrants, or penetrating items, are the mechanical, electrical or structural items that pass through an opening in a wall or floor, such as pipes, electrical conduits, ducting, electrical cables and cable trays, or structural steel beams and columns. When these items pierce a wall or floor assembly, they create a space between the penetrant ...
[13]: p.62–3 Steel framing could be fireproofed, but unlike skyscrapers or other commercial building types, factories had no reason to cover steel framing for aesthetic purposes, and therefore fireproofing of steel beams was an additional cost that made reinforced concrete construction less expensive than steel construction.
Pre-cast concrete beams may be delivered on site to be installed for the second floor, after which a concrete slab may be poured for the pavement area. This can be done for multiple stories. [ 17 ] A parking garage of this type is just one possible example of many structures that may use both reinforced concrete and structural steel.
(2) The thermal expansion coefficients of concrete and steel are so close (1.0 × 10 −5 to 1.5 × 10 −5 for concrete and 1.2 × 10 −5 for steel) that the thermal stress-induced damage to the bond between the two components can be prevented. (3) Concrete can protect the embedded steel from corrosion and high-temperature induced softening.
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
Fire-retardant materials are designed to burn slowly.. 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.
Intumescent fireproofing is a layer of a material which is applied like paint on the structural steel members. The thickness of this intumescent coating is dependent on the steel section used. Intumescent coatings are applied in a relatively low thickness (usually 350- to 700- micrometer ), have a more aesthetic smooth finish, and help prevent ...