Standard Test Methods for Wood Structural Panels in Shear Through-the-Thickness

Importancia y uso:

3.1 The strength and modulus of rigidity of wood structural panels in shear through-the-thickness obtained by these test methods are required for the rigorous design of many lumber-panel structural components such as trusses with panel gussets, box beams, folded plate roofs, and space plane structures, as well as floor and roof diaphragms, and shear walls. These properties are of secondary importance in typical roof deck and sheathing applications, and in crates and shipping containers.

3.2 Veneer produced by slicing or rotary peeling may contain fine checks or separations parallel to the grain on the knife side of the veneer that are produced as the knife is forced through the wood. These checks are termed “knife checks” to distinguish them from occasional checks that may be formed on the opposite side of the veneer by forces at the compression bar, and from checks caused by drying. Average depth of knife checks has been found to strongly influence shear properties in plywood panels and may be of significance in veneer incorporated in composite panels. Measurement of depth of knife checks is recommended in these test methods.

3.3 To control or define other variables influencing shear properties, these test methods require determination of moisture content and elapsed time to failure. The conditioning of test material in controlled atmosphere and determination of specific gravity are recommended.

Subcomité:

D07.03

Referida por:

D7033-22, D5457-23

Volúmen:

04.10

Número ICS:

79.060.10 (Plywood)

Palabras clave:

shear; shear test; shear through-the-thickness; wood structural panels ;