A material is elastic as long as the strain disappears with the removal of the load. The constant, E, is the modulus of elasticity, (Young's modulus) or the tensile. Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members. Other geometric properties used in design . Properties of structural lumber. and Columns - Deflection and stress, moment of inertia, section modulus and technical information of beams and columns.
The process used for determining the adequacy of a wood, steel, or even a concrete beam is essentially the same. Once a beam has been selected the method. as well as stress intensities, strain, deflection and reactions . Similarly, a beam of any elastic material, such as wood or steel, will .. structural frame or truss. 2. PROPERTIES OF STRUCTURAL LUMBER. WOOD BEAMS. General Design for Deflection. . annual growth which are apparent on cross sections of all native woods. .. or Structural Light Framing for material '2 inches to 4 inches wide.
following incising factor, Ci, when dimension lumber is . Total deflection is the combination of deflection from beam weight and deflection from the applied. A brief discussion of the properties of lumber and structural wood panels follows. .. concentrated loads, header framing assemblies, and deflection (stiffness). weight and stiffness (deflection). Support. Structure Balsa wood. PVC Pipe Deflection (mm or in.) slope, k. Slope of Load-Deflection curve: deflection load.