EWPAA Structural Plywood and LVL Design Manual - Engineered ...

Equilibrium Moisture Content (EMC)Property15% or less 15% to 25% 25% or morek4= 1.45 – 0.03Bending and Compression k 4 = 1.0k4= 0.7EMCk4= 1.30 – 0.02Tension and Shear k 4 = 1.0k4= 0.8EMCModulus of Elasticity = 1.0 j6 = 1.30 – 0.02 EMC j6 = 0.8j 6TABLE 6.3: Moisture content factor (k 4 for strength and j 6 for stiffness)k 6– Factor for Temperaturek 6 = 1.0 except where used in structures erected in coastal regions of Queensland north oflatitude 25°S and all other regions of Australia north of latitude 16°S, k 6 = 0.9. Refer FIGURE6.7.AS1720.1-1997clause 2.4.3FIGURE 6.7: Shows regions k 6 appliesk 7– Factor for Length and Position of BearingThe k 7 bearing factor modifies bearing strength perpendicular to grain. The modificationfactor allows for bearing configurations which differ from the standard test configuration fromwhich the bearing perpendicular to grain strength data was derived. k 7 = 1.0 unless thebearing length is less than 150 mm long and is 75 mm or more from the end of themember. In this case k 7 may be greater than 1.0. Refer TABLE 6.4. The bearing length ismeasured parallel to the face grain of the member.AS1720.1-1997clause 2.4.445