A rectangular beam has a cross section of b = 14 in., h = 24 in., and d = 21.5 in. It is reinforced with five No. 6 Grade 60 bars. The concrete strength is 7,300 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracking moment, Mcr.
Read DetailsA simply supported beam with dimensions of b = 18 in., h = 30 in., d = 27.5 in., and L = 16 ft supports a uniform service (unfactored) dead load of 2.3625 kips/ft including its own self weight plus a uniform service (unfactored) live load of 1.5 kips/ft. The concrete is normal-weight concrete. The beam is reinforced with 4 No. 8 bars. The concrete strength is 6,100 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the maximum applied bending moment due to the combined service loads (dead plus live), Ma.
Read DetailsA simply supported beam with dimensions of b = 16 in., h = 28 in., d = 25.5 in., and L = 20 ft supports a uniform service (unfactored) dead load of 1.766667 kips/ft including its own self weight plus a uniform service (unfactored) live load of 1.0 kips/ft. The concrete is normal-weight concrete. The beam is reinforced with 5 No. 8 bars. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the maximum applied bending moment due to the combined service loads (dead plus live), Ma.
Read DetailsIf the exterior frames of a building are exposed to atmospheric temperature changes and the interior is maintained at a constant temperature, a relative vertical deflection can occur between the interior and exterior columns.
Read DetailsA beam is singly reinforced with the reinforcement in two rows. The bottom row contains 10 No. 8 bars at a depth of 16 in. The top row contains 8 No. 6 bars at a depth of 11 in. Determine the effective (centroidal) depth, d, of the steel.
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