nated wood beam giuing (actual dimensions) cross section, as shown int 12 in. 3 in. 2 in. 2 in. 2 in. 3 in. in. 4 in. 4 in. (a) (b) (c) he allowable shear stress in the glued joints is 44 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1,858 psi. a) If the beam is 12 ft long, what is the allowable load P (in kips) acting at the one-third point along the beam, as shown? (Include the effects of the beam's own weight, assuming that the wood weighs 35 Ib/ft. kips b) Repeat part (a) if the beam is assembled by gluing together two in. x 4 in. boards and a 2 in. x 4 in. board (see figure part (c)). kips

nated wood beam giuing (actual dimensions) cross section, as shown int 12 in. 3 in. 2 in. 2 in. 2 in. 3 in. in. 4 in. 4 in. (a) (b) (c) he allowable shear stress in the glued joints is 44 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1,858 psi. a) If the beam is 12 ft long, what is the allowable load P (in kips) acting at the one-third point along the beam, as shown? (Include the effects of the beam's own weight, assuming that the wood weighs 35 Ib/ft. kips b) Repeat part (a) if the beam is assembled by gluing together two in. x 4 in. boards and a 2 in. x 4 in. board (see figure part (c)). kips

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 wood beam on simple supports (figure part (a)) is built up by gluing together four 2 in. x 4 in. boards (actual dimensions) to form a solid beam 4 in. x 8 in. in cross section, as shown in the figure part (b).
-L/3
2 in.
3 in.
2 in.
2 in.
2 in.
3 in.
[2 in.
4 in.
4 in.
(a)
(b)
(c)
The allowable shear stress in the glued joints is 44 psi, the allowable shear stress in the wood is 175 psi, and the allowable bending stress in the wood is 1,858 psi.
(a) If the beam is 12 ft long, what is the allowable load P (in kips) acting at the one-third point along the beam, as shown? (Include the effects of the beam's own weight, assuming that the wood weighs 35 Ib/ft.)
kips
(b) Repeat part (a) if the beam is assembled by gluing together two 3 in. x 4 in. boards and a 2 in. x 4 in. board (see figure part (c)).
kips

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