- #Standard for cold formed steel framing full#
- #Standard for cold formed steel framing iso#
- #Standard for cold formed steel framing free#
9– 11 Therefore, it is valuable to augment standard fire tests with tests using realistic fire exposures, particularly for use with performance-based design approaches. 8 While standardized tests provide common ground to compare assembly performance, the relationship between results obtained from standard fires and realistic fire conditions is tenuous.
#Standard for cold formed steel framing iso#
6 The fire resistance of CFS structural assemblies, eg, walls including gypsum board, is commonly assessed using standardized fire resistance tests such as those in the American Society of Testing and Materials (ASTM) standard ASTM E119 7 or the International Organization for Standardization (ISO) standard ISO 834–1. The duration of the water release is critical for the fire protection provided by the gypsum board and depends strongly on the heating rate.
#Standard for cold formed steel framing free#
Gypsum board, also referred to as wallboard, sheetrock, or drywall, is primarily composed of calcium silicate dihydrate, 4, 5 which undergoes a two-step calcination reaction releasing its free and chemically bound water when heated. As CFS is increasingly used in taller buildings, fire resistance plays an important role as the structure needs to withstand the fire for longer times, ensuring safe occupant egress and suppression activities. 2 CFS structural elements are made of relatively thin steel (0.455 to 2.997 mm thick) 3 and typically rely on one or more layers of gypsum board for fire protection. 1 Together with timber-framed structures, lightweight framing systems comprise the majority of housing in the United States. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.Cold-formed steel (CFS) framing is widely used to construct nonstructural elements (eg, interior partitions and exterior cladding support) in buildings however, it is also common to find CFS serving as structural elements in single and multi-storey construction. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.ġ.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.Ģ.
#Standard for cold formed steel framing full#
It is informational only and not an official part of the standard the full text of the standard itself must be referred to for its use and application. This abstract is a brief summary of the referenced standard. Report shall indicate all specimens meeting the requirements of this specification if the screw penetrated the steel and the screw spin out or shall indicate all specimens failing if the screw did not penetrate the steel, or the screw spun out. If more than one test specimen fails to meet the requirements, two more test specimens shall be chosen for retesting. Five specimens of members shall be tested.
Penetration test method provides a procedure for evaluating the member's ability to pull the head of a screw below the surface of the gypsum panel product. The steel members shall be free of defects that interfere with the purpose for which they are intended.
The properties and strength of members shall be computed in accordance with the given specification. Members shall be manufactured from steel meeting the requirements specified. Steel of lesser thickness shall be permitted in additional engineered products. This specification covers steel studs, runners (tracks), and bracing or bridging for screw application of gypsum panel products and metal plaster bases in load-bearing construction assemblies.
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