Two wood beams, each of rectangular cross section (3.0 in. x 4.0 in., actual dimensions), are glued together to form a solid beam with dimensions 6.0 in. x 4.0 in. (see figure). 4.0 in 6.0 in. 8 ft- Ⓡ The beam is simply supported with a span of 8 ft. (a) What is the maximum moment Mmax (in kip-ft) that may be applied at the left support if the allowable shear stress in the glued joint is 175 psi? (Include the effects of the beam's own weight, assuming that the wood weighs 35 lb/ft³. Enter the magnitude.) kip-ft (b) Repeat part (a) if Mmax is based on allowable bending stress of 2,510 psi. kip-ft
Two wood beams, each of rectangular cross section (3.0 in. x 4.0 in., actual dimensions), are glued together to form a solid beam with dimensions 6.0 in. x 4.0 in. (see figure). 4.0 in 6.0 in. 8 ft- Ⓡ The beam is simply supported with a span of 8 ft. (a) What is the maximum moment Mmax (in kip-ft) that may be applied at the left support if the allowable shear stress in the glued joint is 175 psi? (Include the effects of the beam's own weight, assuming that the wood weighs 35 lb/ft³. Enter the magnitude.) kip-ft (b) Repeat part (a) if Mmax is based on allowable bending stress of 2,510 psi. kip-ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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pls answer a and b
Transcribed Image Text:Two wood beams, each of rectangular cross section (3.0 in. x 4.0 in., actual dimensions), are glued together to form a solid beam with dimensions 6.0 in. x 4.0 in. (see figure).
4.0
M
6.0 in.
000
-8 ft-
The beam is simply supported with a span of 8 ft.
(a) What is the maximum moment Mmax (in kip-ft) that may be applied at the left support if the allowable shear stress in the glued joint is 175 psi? (Include the effects of the beam's own weight, assuming that the wood weighs 35 lb/ft³. Enter the magnitude.)
kip-ft
(b) Repeat part (a) if Mmax is based on allowable bending stress of 2,510 psi.
kip-ft
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