Determine the largest concentrated vertical load in lb

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter10: Statically Indeterminate Beams
Section: Chapter Questions
Problem 10.3.2P: A fixed-end b earn is subjected to a point load at mid-span. The beam has a rectangular cross...
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N
b₁
b₂
d₁
1d₂
:
●●●
A wooden beam (1) is reinforced with steel plates (2) rigidly sttached to its top and bottom surfaces, as shown. The
dimensions of the cross section are b₁ = 6 in., d₁ = 12 in., b₂ = 4 in., and d₂ = 0.5 in. The elastic moduli of the wood
and steel are E₁ = 1,250 ksi and E₂ = 30,000 ksi, respectively. The allowable bending stresses of the wood and steel
are 1,200 psi and 20,000 psi, respectively. Determine the largest concentrated vertical load in lb that can be applied
at midspan if a simply supported beams with this cross section spans 18 ft. Round off to the nearest whole number.
Transcribed Image Text:N b₁ b₂ d₁ 1d₂ : ●●● A wooden beam (1) is reinforced with steel plates (2) rigidly sttached to its top and bottom surfaces, as shown. The dimensions of the cross section are b₁ = 6 in., d₁ = 12 in., b₂ = 4 in., and d₂ = 0.5 in. The elastic moduli of the wood and steel are E₁ = 1,250 ksi and E₂ = 30,000 ksi, respectively. The allowable bending stresses of the wood and steel are 1,200 psi and 20,000 psi, respectively. Determine the largest concentrated vertical load in lb that can be applied at midspan if a simply supported beams with this cross section spans 18 ft. Round off to the nearest whole number.
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