A rectangular beam has a cross section of b = 14 in., h = 28…
A rectangular beam has a cross section of b = 14 in., h = 28 in., and d = 25.5 in. It is reinforced with four No. 8 Grade 60 bars. The concrete strength is 3,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the transformed cross-sectional area of the bars, Ast.
Read DetailsA rectangular beam has a cross section of b = 16 in., h = 28…
A rectangular beam has a cross section of b = 16 in., h = 28 in., and d = 25.5 in. It is reinforced with five No. 6 Grade 60 bars. The concrete strength is 3,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracked moment of inertia, Icr. The neutral axis location of the cracked beam (measured from the top of the beam) is 6.7139 in.
Read DetailsA simply supported beam with dimensions of b = 16 in., h = 2…
A simply supported beam with dimensions of b = 16 in., h = 24 in., d = 21.5 in., and L = 24 ft supports a uniform service (unfactored) dead load of 1.6 kips/ft including its own self weight plus a uniform service (unfactored) live load of 0.8 kips/ft. The beam is reinforced with two No. 7 Grade 60 bars. The concrete strength is 3,700 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Using the effective moment of inertia, determine the immediate mid-span deflection of the beam due to the combined service loads (dead plus live).The effective moment of inertia Ie = 3,966.4 in.4.
Read DetailsA rectangular beam has a cross section of b = 18 in., h = 26…
A rectangular beam has a cross section of b = 18 in., h = 26 in., and d = 23.5 in. It is reinforced with two No. 6 Grade 60 bars. The concrete strength is 4,600 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracking moment, Mcr.
Read DetailsA rectangular beam has a cross section of b = 14 in., h = 30…
A rectangular beam has a cross section of b = 14 in., h = 30 in., and d = 27.5 in. It is reinforced with three No. 5 Grade 60 bars. The concrete strength is 6,100 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracked moment of inertia, Icr. The neutral axis location of the cracked beam (measured from the top of the beam) is 4.4649 in.
Read DetailsA rectangular beam has a cross section of b = 16 in., h = 30…
A rectangular beam has a cross section of b = 16 in., h = 30 in., and d = 27.5 in. It is reinforced with four No. 7 Grade 60 bars. The concrete strength is 7,300 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the gross moment of inertia, Ig, for the beam.
Read DetailsA rectangular beam has a cross section of b = 16 in., h = 24…
A rectangular beam has a cross section of b = 16 in., h = 24 in., and d = 21.5 in. It is reinforced with three No. 6 Grade 60 bars. The concrete strength is 9,700 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the gross moment of inertia, Ig, for the beam.
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