3: Select the lightest W shape beam that is to carry the loads as shown in the figure below if the beam has a bending capacity of 35 ksi. The beam spans at L = 25 ft, and loaded with w and 2w where w = 1000 lb/ft. (a) Make a list of potential W shapes. (b) Do safety test for the potential shapes starting with the lightest one in the list. (c) For the selected lightest W shape, make sure to prove that it is the lightest safe design. 2w W B
3: Select the lightest W shape beam that is to carry the loads as shown in the figure below if the beam has a bending capacity of 35 ksi. The beam spans at L = 25 ft, and loaded with w and 2w where w = 1000 lb/ft. (a) Make a list of potential W shapes. (b) Do safety test for the potential shapes starting with the lightest one in the list. (c) For the selected lightest W shape, make sure to prove that it is the lightest safe design. 2w W B
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:3: Select the lightest W shape beam that is to carry the loads as shown in the figure below if the beam has a
bending capacity of 35 ksi. The beam spans at L = 25 ft, and loaded with w and 2w where w = 1000 lb/ft.
(a) Make a list of potential W shapes.
(b) Do safety test for the potential shapes starting with the lightest one in the list.
(c) For the selected lightest W shape, make sure to prove that it is the lightest safe design.
2w
W
12
B
12
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