Given: A and B are both made of wood and are 40 in. thick, the ultimate shear stress for the wood 900 psi and a factor of safety of 3.0 is required under a load of P = 700 lb Determine: to the nearest 1/4 in. the smallest dimension h of the vertical segment so that it does not fail in shear. B 12 A

Given: A and B are both made of wood and are 40 in. thick, the ultimate shear stress for the wood 900 psi and a factor of safety of 3.0 is required under a load of P = 700 lb Determine: to the nearest 1/4 in. the smallest dimension h of the vertical segment so that it does not fail in shear. B 12 A

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter14: Material Selection

Section: Chapter Questions

Problem 11ETSQ

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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

Given: A and B are both made of wood and are 40 in. thick, the
ultimate shear stress for the wood 900 psi and a factor of safety of
3.0 is required under a load of P = 700 lb
Determine: to the nearest 1/4 in, the smallest dimension h of the
vertical segment so that it does not fail in shear.
B
P
13
12
A

Expert Solution

Step 1

Ultimate shear stress: It is defined as the maximum stress that can allow the material or an object without failure of the material. the units of the shear stress are N/mm² or MPa. it is denoted by $τ$ .

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