CIVL439/W00D476 Wall construction LL Shrinkage of wood (25%MC moisture content of wood (% Shrinkage in Shrinkage in woodframe construction 21CIVL439/WOOD476 21 Wall construction These elements for shearwalls only Loads on walls Gravity loads (dead load, snow, occupancy) Shear loads (wind, earthquake) Lateral loads (wind) Shrinkage of wood (%) 10 moisture content of wood (%) shrinkage 0 5 0 5 10 20 25 15 30 lengthwise shrinkage Wood shrinkage in platform construction 2x12 (38x235) joists When using green wood (25% MC) Shrinkage @ 5% results in (0.05)(235+38+38) = 15.6mm 2x4 (38x89) top plates Shrinkage in woodframe construction Shrinkage in connections