When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Hankinson's equation - Wikipedia

    en.wikipedia.org/wiki/Hankinson's_equation

    Hankinson's equation (also called Hankinson's formula or Hankinson's criterion) [1] is a mathematical relationship for predicting the off-axis uniaxial compressive strength of wood. The formula can also be used to compute the fiber stress or the stress wave velocity at the elastic limit as a function of grain angle in wood.

  3. Compressive strength - Wikipedia

    en.wikipedia.org/wiki/Compressive_strength

    As per Indian codes, compressive strength of concrete is defined as: Field cured concrete in cubic steel molds (Greece) The compressive strength of concrete is given in terms of the characteristic compressive strength of 150 mm size cubes tested after 28 days (fck). In field, compressive strength tests are also conducted at interim duration i.e ...

  4. Wood - Wikipedia

    en.wikipedia.org/wiki/Wood

    For example, in loblolly pine, wind exposure and stem position greatly affect the hardness of wood, as well as compression wood content. [30] The density of wood varies with species. The density of a wood correlates with its strength (mechanical properties).

  5. Parallel-strand lumber - Wikipedia

    en.wikipedia.org/wiki/Parallel-strand_lumber

    [citation needed] PSL can be made from any wood species, but Douglas fir, southern pine, western hemlock, and yellow poplar are commonly chosen [9] because of their superior strength. The product is manufactured as a 12-by-12-inch (300 mm × 300 mm) or 12-by-18-inch (300 mm × 460 mm) billet in a rectangular cross-section, which is then ...

  6. Strength of materials - Wikipedia

    en.wikipedia.org/wiki/Strength_of_materials

    A simple case of compression is the uniaxial compression induced by the action of opposite, pushing forces. Compressive strength for materials is generally higher than their tensile strength. However, structures loaded in compression are subject to additional failure modes, such as buckling, that are dependent on the member's geometry.

  7. Specific strength - Wikipedia

    en.wikipedia.org/wiki/Specific_strength

    It is also known as the strength-to-weight ratio or strength/weight ratio or strength-to-mass ratio. In fiber or textile applications, tenacity is the usual measure of specific strength. The SI unit for specific strength is Pa ⋅ m 3 / kg , or N ⋅m/kg, which is dimensionally equivalent to m 2 /s 2 , though the latter form is rarely used.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Container compression test - Wikipedia

    en.wikipedia.org/wiki/Container_compression_test

    The container compression test measures the compressive strength of packages such as boxes, drums, and cans. It usually provides a plot of deformation vs compressive force . It is commonly used to evaluate shipping containers made of corrugated fiberboard as well as wooden boxes and crates .