assignment3

# assignment3 - moment of inertia, I xx for an ideal beam (no...

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CVEN 444 Assignment 3 due 6/13/03 The assignment will be review problems and will not be covered in class. You will need to show free-body diagrams, use an engineering format and be neat! [1] Consider a simple rectangular beam( b x h ) reinforced with steel reinforcement of A s . Assume b = 8 in., d = 12 in., h = 14.5 in., A s = 3.0 in 2 and f c =4 ksi and f y = 60 ksi. a) Determine the centroid (neutral axis, NA) and moment of inertia, I xx for an ideal beam (no cracks). b) Determine the NA and moment of inertia, I xx , of beam if the beam is cracked and tensile forces are in the steel only. [2] For the given beam with f c = 5 ksi and f y = 60 ksi. a) Determine the centroid (neutral axis, NA) and
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Unformatted text preview: moment of inertia, I xx for an ideal beam (no cracks). b) Determine the NA and moment of inertia, I xx , of beam if the beam is cracked and tensile forces are in the steel only. [3] Given: f c = 6 ksi and f y = 60 ksi. The dimensions are b eff = 36 in., b w = 9 in., d = 17 in., h f = 3 in., h=19.5 in. and A s 6 # 9 bars. If the top is in compression and bottom is in tension. a) Determine the centroid (neutral axis, NA) and moment of inertia, I xx for an ideal beam (no cracks). b) Determine the NA and moment of inertia, I xx , of beam if the beam is cracked and tensile forces are in the steel only....
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## This note was uploaded on 10/03/2011 for the course CVEN 444 taught by Professor Staff during the Summer '08 term at Texas A&M.

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