A laminated beam is composed of four planks, each 6 in. by 2 in., glued together to form an outside section 6 in. wide by 10 in. high and a hallow inside of 4 in wide by 6 in high. The allowable shear stress in the glue is 90 psi, the allowable shear stress in the wood is 120 psi, and the allowable flexural stress in the wood is 1200 psi. Determine the maximum uniformly distributed load in lb/ft that can be carried by the beam on a 6- ft simple span neglect the shear stress in the wood.

A laminated beam is composed of four planks, each 6 in. by 2 in., glued together to form an outside section 6 in. wide by 10 in. high and a hallow inside of 4 in wide by 6 in high. The allowable shear stress in the glue is 90 psi, the allowable shear stress in the wood is 120 psi, and the allowable flexural stress in the wood is 1200 psi. Determine the maximum uniformly distributed load in lb/ft that can be carried by the beam on a 6- ft simple span neglect the shear stress in the wood.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A laminated beam is composed of four
planks, each 6 in. by 2 in., glued together to
form an outside section 6 in. wide by 10 in.
high and a hallow inside of 4 in wide by 6 in
high. The allowable shear stress in the glue
is 90 psi, the allowable shear stress in the
wood is 120 psi, and the allowable flexural
stress in the wood is 1200 psi. Determine
the maximum uniformly distributed load in
lb/ft that can be carried by the beam on a 6-
ft simple span neglect the shear stress in
the wood.

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