Answer to Question #330074 in Civil and Environmental Engineering for James

Question

A cantilever beam is 8.85 m in length is made up of Apitong 165 mm x 350 mm wooden section, with

an allowable stress based on 80% stress grade of 16.5 MPa in bending and tension parallel to grain.

The beam carries a uniform load of 32 kN/m besides its own weight. Weight of wood = 7.5kN/m3. The beam carries an axial tensile load of 225 kN. Bending and tension parallel to the grain = 16.5 MPa Modulus of Elasticity in Bending = 7310 MPa Compression parallel to the grain = 9.56 MPa

Compute for the following:

a) actual tensile stress if only tensile force is acting.

b) interaction value for both bending and tensile stress

c) ratio of the difference between its actual bending and tensile stress to the adjusted bending

stress for slenderness