ASTM C645 PDF

Specifying non-structural steel studs for interior walls May 1, There are two thicknesses of gauge products. This table shows the difference between the non-structural and structural products. For non-structural steel studs, there is no requirement for elongation i. Typically, the base metal thickness of non-structural members will range between 0.

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Specifying non-structural steel studs for interior walls May 1, There are two thicknesses of gauge products. This table shows the difference between the non-structural and structural products. For non-structural steel studs, there is no requirement for elongation i. Typically, the base metal thickness of non-structural members will range between 0.

However, thicknesses greater than 30 mil are typically considered to be structural members. For example, gauge interior wall partition studs have a thickness of 0. Per ASTM C, for equivalent thickness EQ steel studs, the minimum thickness is determined by performance requirements, not by a prescriptive minimum thickness.

This is commonly measured by red rust. For example, a G40 contains 0. This other coating is an A40 hot-dipped galvannealed steel, which is used extensively in the automotive industry. This coating has eight to 12 percent zinc-iron alloy in addition to the zinc.

Since the automotive industry paints over the galvannealed coating, it is almost always less than the 0. The newest development in the industry is the advent of equivalent coatings that have further advanced the performance characteristics of non-structural framing. These new EQ coatings are applied pre- and post-production and represent a scientific advancement in protection.

They can offer performance characteristics greater than traditional G40 coatings. Tracks must have a minimum flange of 25 mm 1 in. The specification also contains a table of minimum tolerances. Marking on the members must be at a maximum of mm 96 in. EQ studs have been in the framing industry for almost a decade, and represent approximately 90 percent of the current market.

Manufacturers now produce EQ studs with higher yield strength than traditional studs using less steel, which helps support the mission of sustainable construction. First, they must have a configuration and steel thickness such that the system in which they are implemented will carry the design transverse loads without exceeding the allowable stress of the steel or the allowable design deflection. Manufacturers are expected to supply sufficient data for calculating design performance.

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Specifying non-structural steel studs for interior walls

Members shall be manufactured from steel and shall have a protective coating. Studs and rigid furring channels shall have a configuration and steel thickness such that the system in which they are used will carry the design transverse loads without exceeding either the allowable stress of the steel or the allowable design deflection. Members shall be manufactured in such a fashion as to minimize burrs and sharp edges. Penetration test shall be done for performance requirements, where members shall be capable of pulling the head of the screw below the surface of the gypsum board without spin out. Apparatus and materials shall satisfy the testing requirements of the specification.

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