The wood specie is Yakal w/ 63% stress grade. Bending loads will be about the strong axis of the cross-section. The members are braced so buckling is not a concern. The moisture content is < 19%. Normal temperature conditions apply. Assume no incising was incorporated for addition of preservatives and that a fire retardant factor = 1.0 is applied. Use 95% exceedence for MOE such that E0.05 = E [ 1- 1.645COVE ] where COVE = 0.25 for VSG lumber and COVE = 0.11 for MSG lumber. Furthermore, the adjusted modulus of elasticity is given by E' = E0.05 x (product of all applicable adjustment factors). Use appropriate CD used based on the provided load combination (D+L). FOR THE SECTION Roof beams are 4" x 10" (nominal size) with a spacing of 1.2m based on center. Determine the allowable design stresses (capacity or design values) and modulus of elasticity for the member for the load combination, D+L. (a) Adjusted Bending Design Value, Fb' = ? (b) Adjusted Tensile Design Value (Parallel to Grain), Ft' = ? (c) Adjusted Shear Design Value (Parallel to Grain), Fv' = ? (d) Adjusted Compressive Design Value (Parallel to Grain), Fc' = ? (e) Adjusted Compressive Design Value (Perpendicular to Grain), FcL' = ? (f) Adjusted Modulus of Elasticity, E' = ?
The wood specie is Yakal w/ 63% stress grade. Bending loads will be about the strong axis of the cross-section. The members are braced so buckling is not a concern. The moisture content is < 19%. Normal temperature conditions apply. Assume no incising was incorporated for addition of preservatives and that a fire retardant factor = 1.0 is applied.
Use 95% exceedence for MOE such that E0.05 = E [ 1- 1.645COVE ] where COVE = 0.25 for VSG lumber and COVE = 0.11 for MSG lumber. Furthermore, the adjusted modulus of elasticity is given by E' = E0.05 x (product of all applicable adjustment factors).
Use appropriate CD used based on the provided load combination (D+L).
FOR THE SECTION
Roof beams are 4" x 10" (nominal size) with a spacing of 1.2m based on center.
Determine the allowable design stresses (capacity or design values) and modulus of elasticity for the member for the load combination, D+L.
(a) Adjusted Bending Design Value, Fb' = ?
(b) Adjusted Tensile Design Value (Parallel to Grain), Ft' = ?
(c) Adjusted Shear Design Value (Parallel to Grain), Fv' = ?
(d) Adjusted Compressive Design Value (Parallel to Grain), Fc' = ?
(e) Adjusted Compressive Design Value (Perpendicular to Grain), FcL' = ?
(f) Adjusted Modulus of Elasticity, E' = ?
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