The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (1) Compute the maximum bending stress in the beam. (2) Sketch the bending stress distribution over the cross section on which the maximum bending stress occurs. (3) Compute the bending stress at a point on section D that is 4 in. below the top of the beam. P = R kips; w. = 0.5R ksi.
The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (1) Compute the maximum bending stress in the beam. (2) Sketch the bending stress distribution over the cross section on which the maximum bending stress occurs. (3) Compute the bending stress at a point on section D that is 4 in. below the top of the beam. P = R kips; w. = 0.5R ksi.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Here R=37
Transcribed Image Text:Q. 1 The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (1)
Compute the maximum bending stress in the beam. (2) Sketch the bending stress
distribution over the cross section on which the maximum bending stress occurs.
(3) Compute the bending stress at a point on section D that is 4 in. below the top
of the beam. P = R kips; w, = 0.5R ksi.
8 in.-
2 in.
P
Wo
A
8 in.
D
3 ft
|B
9 ft
–- 3 ft →|
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