Another word for excessive exaggeration is:
Which symbol represents the distance from the extreme fiber…
Which symbol represents the distance from the extreme fiber in compression to the centroid of the longitudinal reinforcement on the tension side of a reinforced concrete member?
A simply supported beam with dimensions of b = 12 in., h = 2…
A simply supported beam with dimensions of b = 12 in., h = 24 in., d = 21.5 in., and L = 21 ft supports a uniform service (unfactored) dead load consisting of its own weight plus 1.7 kips/ft and a uniform service (unfactored) live load of 1.5 kips/ft. The concrete is normal-weight concrete. Determine the moment due to the factored loads, Mu.
A beam has dimensions of b = 16 in., h = 24 in., and d = 21….
A beam has dimensions of b = 16 in., h = 24 in., and d = 21.5 in. and is reinforced with 2 No. 6 bars. The concrete strength is 7,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 0.554622 in. and the strain in the reinforcement is εs = 0.078407, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.
Most concrete design codes specify a maximum usable compress…
Most concrete design codes specify a maximum usable compressive strain at which the nominal moment strength of the section is to be calculated. For ACI 318, this maximum usable strain value is 0.005.
Carbonation shrinkage occurs when moisture diffuses out of t…
Carbonation shrinkage occurs when moisture diffuses out of the concrete and the exterior shrinks more rapidly than the interior.
A beam has dimensions of b = 14 in., h = 26 in., and d = 23….
A beam has dimensions of b = 14 in., h = 26 in., and d = 23.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth to the neutral surface is c = 5.233927 in., determine the strain in the reinforcement.
A beam has dimensions of b = 14 in., h = 24 in., and d = 21….
A beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 2 No. 5 bars. The concrete strength is 3,700 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.
A beam has dimensions of b = 14 in., h = 26 in., d’ = 2.5 in…
A beam has dimensions of b = 14 in., h = 26 in., d’ = 2.5 in., and d = 23.5 in. It is reinforced with 2 No. 5 bars on the compression side and 5 No. 8 bars on the tension side. The concrete strength is 3,100 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.547 in., determine the force in the compression reinforcement, Cs.
A group of 25 tests on a given type of concrete had a mean s…
A group of 25 tests on a given type of concrete had a mean strength of 4,000 psi and a standard deviation of 400 psi. Does this concrete satisfy the strength requirement for 4,000 psi concrete?