CEM 632Concrete Form Work

Wood ColumnHomework-10

April 24, 2013

Professor:Bryan OsborneUniversity of Nevada, Las VegasDepartment of Civil and Environmental Engineering & Constructions

Prepared by:Kabindra K. Shrestha

Example 5-18 revised: (page 131 of text book)A 2 x 4 S4S rectangular shore of No.2 Southern pine has a reference compression stress parallel to grain of 1,600 psi and a reference modulus of elasticity for column stability of 580,000 psi. It has an effective length of 6 ft. above both the strong x-x axis and the weak y-y axis. Calculate the allowable compression load.

Answer:Considering the adjustment factors for reference values of compression stress = 1.0Slenderness of column is governed by least cross-sectional dimension = 3 inch (actual)The slenderness ratio, le/d = (6ft * 12 inch/ft) / 3.5 inch = 20.57Compressive stress parallel to grain = fc = 1,600 psiC=0.8 for sawn lumber

For le/d