ASTM D1990 Standard Test for Determining Permissible Properties for Timber

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D1990 testing. This app only covers lumber dimensions.

Due to the number of samples involved and the number of mechanical properties to be evaluated, a methodology is required to evaluate data and assign allowable properties to both tested and untested class/size cells.

Sampling and analysis of tested cells are covered in Application D-2915. Mechanical test methods are covered in Test Methods D-198 and D-4761. This standard specifies the procedures for assigning allowable values ​​of stress and modulus of elasticity to sized timber from In-Grade. The application includes methods that allow the assignment of allowable values ​​of stress and modulus of elasticity to untested dimensions and grades, as well as some untested properties.

The basic assumption of the procedures used in this standard is that the samples selected and tested are representative of the entire global population evaluated. This approach is consistent with the historical clean wood methodology of assigning an allowable trait to visually graded timber that represents the entire growth range of a species or species group.

This standard specifies principles and procedures for establishing allowable stress values ​​for bending, tension parallel to the grain, compression parallel to the grain, and modulus of elasticity for structural design from "Quality" tests of visually graded solid sawn lumber.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

EUROLAB assists manufacturers with ASTM D1990 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.