A wooden beam is fabricated from one 2 × 16 and two 2 × 10 dimension lumber boards to form the double-tee cross-section shown. The beam flange is fastened to the stem with nails. Each nail can safely transmit a force of 176 lb in direct shear. The allowable shear stress of the wood is 83 psi. Assume b1 = 16 in., b2 = 2 in., d1 = 2 in., d2 = 10 in. (b) What nail spacing s would be necessary to develop the full strength of the double-tee shape in shear? (Full strength means that the maximum horizontal shear stress in the double-tee shape equals the allowable shear stress of the wood.) [Answer: s = 1.17 in]
A wooden beam is fabricated from one 2 × 16 and two 2 × 10 dimension lumber boards to form the double-tee cross-section shown. The beam flange is fastened to the stem with nails. Each nail can safely transmit a force of 176 lb in direct shear. The allowable shear stress of the wood is 83 psi. Assume b1 = 16 in., b2 = 2 in., d1 = 2 in., d2 = 10 in. (b) What nail spacing s would be necessary to develop the full strength of the double-tee shape in shear? (Full strength means that the maximum horizontal shear stress in the double-tee shape equals the allowable shear stress of the wood.) [Answer: s = 1.17 in]
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A wooden beam is fabricated from one 2 × 16 and two 2 × 10 dimension lumber boards to form the double-tee cross-section shown. The beam flange is fastened to the stem with nails. Each nail can safely transmit a force of 176 lb in direct shear. The allowable shear stress of the wood is 83 psi. Assume b1 = 16 in., b2 = 2 in., d1 = 2 in., d2 = 10 in.
(b) What nail spacing s would be necessary to develop the full strength of the double-tee shape in shear? (Full strength means that the maximum horizontal shear stress in the double-tee shape equals the allowable shear stress of the wood.) [Answer: s = 1.17 in]
Transcribed Image Text:b1
Nails
dz
b2
b2
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