ASTM D198

Full Name

ASTM D198 – Standard Test Methods of Static Tests of Lumber in Structural Sizes

Scope

ASTM D198 outlines standard test methods for evaluating the mechanical properties of lumber and wood-based products in structural sizes under static loading conditions.

The scope of ASTM D198 includes:

  • Test methods – the standard covers several test methods to evaluate various mechanical properties:
    • Flexure: determines the flexural strength and stiffness of lumber in structural sizes.
    • Compression (short specimen): evaluates the compressive strength of lumber with a slenderness ratio less than 17.
    • Compression (long specimen): assesses the compressive strength of lumber with a slenderness ratio of 17 or greater.
    • Tension: measures the tensile strength of lumber.
    • Torsion: Determines the torsional shear strength of lumber.
    • Shear Modulus: Evaluates the shear stiffness of lumber.
  • Materials: the standard applies to various lumber and wood-based products used in structural applications, including sawn lumber, glue-laminated timber, composite lumber, and pre-fabricated I-joists.
  • Applications – the test methods are primarily used for:
    • Research and development: evaluating the mechanical properties of new wood products and treatments.
    • Quality control: verifying the quality of lumber and wood products during manufacturing and construction.
    • Design: providing data for the development of design values and specifications for wood structures.
  • Limitations: the standard does not cover dynamic loading conditions, such as those caused by earthquakes or wind. It also does not address the long-term durability of wood products under various environmental conditions.

Overall, ASTM D198 provides a comprehensive framework for evaluating the static mechanical properties of lumber and wood-based products, ensuring their safe and reliable use in structural applications.

ASTM D198 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM D198 standard.

Whether you need to verify product compliance, optimize material selection, or investigate failure analysis, our team is committed to delivering exceptional service. Contact us today to learn more about how our ASTM D198 testing services can support your project.

Resources

Keywords

lumber; wood; static testing; flexure; compression; tension; torsion; shear modulus; structural sizes; mechanical properties

Need more info?