1

Determine the maximum allowable axial load around wood column, 200mm in diameter and 4.0m long can support for a duration of 10 years. The base of the column is effectively held in position and restrained against rotation and the top is restrained neither Against rotation nor against horizontal movement. E = 13.790 Gpa and Fc = 11.032 Mpa.

2

Design a glulam column 3.5 m in length to support an axial load of 150 kN. The column is to be built with 30mm thick and 200mm wide laminations of Benguet pine lumber (E = 8.963 GPa, Fc = 6.895 MPa). Assume a normal load duration and pinned-end conditions.

3

Determine the allowable load on a 3 m long layered built-up column made up of 6 nominal 2”x 6” pieces of Apitong lumber (actual size 1.5” x 5.5”). The column does not have full lateral bracing to prevent weak axis buckling of individual laminations. However, the specified fastening requirements for nailed built-up columns are satisfied. Assume column pinned in one end and fixed to other end. Consider normal duration of loading. The column used is visually graded sawn lumber. Fc=6.26MPa, E=8.01GPa

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