A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom flanges. The beam supports a concentrated load of P = 4300 Ib at the center of a 15-ft span. Bolts (3/8-in. diameter) connect the plywood webs and the lumber flanges at a spacing of s = 9 in. along the span. Supports A and C can be dealized as a pin and a roller, respectively. w = 5 in., b = 0.5 in., t = 5 in., h = 14 in.]
A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom flanges. The beam supports a concentrated load of P = 4300 Ib at the center of a 15-ft span. Bolts (3/8-in. diameter) connect the plywood webs and the lumber flanges at a spacing of s = 9 in. along the span. Supports A and C can be dealized as a pin and a roller, respectively. w = 5 in., b = 0.5 in., t = 5 in., h = 14 in.]
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom
flanges. The beam supports a concentrated load of P = 4300 lb at the center of a 15-ft span. Bolts (3/8-in. diameter)
connect the plywood webs and the lumber flanges at a spacing of s = 9 in. along the span. Supports A and C can be
idealized as a pin and a roller, respectively.
[w = 5 in., b = 0.5 in., t = 5 in., h = 14 in.]
P
A
В
L/2
L/2
b-k Kb
W
What is the first moment of area (Q) that is needed for the calculation of shear flow in the bolts?
238 in.4
272 in.4
204 in. 4
317 in.4
471 in.4](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcc93860e-0143-418d-8f1b-3cc469e61fbb%2F8f2a96a7-0023-4c3b-bd60-6e84fb1da7d4%2Fjbodhy_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom
flanges. The beam supports a concentrated load of P = 4300 lb at the center of a 15-ft span. Bolts (3/8-in. diameter)
connect the plywood webs and the lumber flanges at a spacing of s = 9 in. along the span. Supports A and C can be
idealized as a pin and a roller, respectively.
[w = 5 in., b = 0.5 in., t = 5 in., h = 14 in.]
P
A
В
L/2
L/2
b-k Kb
W
What is the first moment of area (Q) that is needed for the calculation of shear flow in the bolts?
238 in.4
272 in.4
204 in. 4
317 in.4
471 in.4
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