Less then _____ percent of all columns in buildings in nonseismic regions are spiral columns.
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A simply supported beam with dimensions of b = 16 in., h = 2…
A simply supported beam with dimensions of b = 16 in., h = 22 in., d = 19.5 in., and L = 25 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 beam is reinforced with four No. 5 Grade 60 bars. The concrete strength is 7,000 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the effective moment of inertia, Ie.The cracked moment Mcr = 67.49 kip-ft, and the maximum applied bending moment due to the combined service loads (dead plus live) Ma = 216.1 kip-ft. The neutral axis location of the cracked beam (measured from the top of the beam) is 3.8417 in.
Vertical stirrups are preferable over inclined stirrups when…
Vertical stirrups are preferable over inclined stirrups when _______.
Determine the required splice length for the longitudinal ba…
Determine the required splice length for the longitudinal bars in the following tied column. Assume that all of the longitudinal bars are in compression and that you will use a contact lap splice. Do not incorporate a reduction in length due to ACI 318-14 Section 10.7.5.2.1.Column width, b = 24 in.Column thickness, h = 22 in.Clear cover to ties = 1.5 in.Number of longitudinal bars = 10Size of longitudinal bars = No. 9Size of ties = No. 4Concrete strength = 3,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 40,000 psi
A rectangular beam has a cross section of b = 14 in., h = 24…
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. 8 Grade 60 bars. The concrete strength is 7,600 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the assumed modulus of elasticity of the concrete, Ec.
A simply supported beam with dimensions of b = 14 in., h = 2…
A simply supported beam with dimensions of b = 14 in., h = 28 in., d = 25.5 in., and L = 24 ft supports a uniform service (unfactored) dead load of 1.808333 kips/ft including its own self weight plus a uniform service (unfactored) live load of 0.9 kips/ft. The beam is reinforced with two No. 7 Grade 60 bars. The concrete strength is 9,700 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 = 7,480.8 in.4.
People dancing can cause vibration problems in buildings.
People dancing can cause vibration problems in buildings.
Spirals are normally made from Grade-40 steel.
Spirals are normally made from Grade-40 steel.
A simply supported beam with dimensions of b = 14 in., h = 2…
A simply supported beam with dimensions of b = 14 in., h = 26 in., d = 23.5 in., and L = 23 ft supports a uniform service (unfactored) dead load of 1.479167 kips/ft including its own self weight plus a uniform service (unfactored) live load of 1.3 kips/ft. The beam is reinforced with five No. 7 Grade 60 bars. The concrete strength is 5,800 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 = 7,972.8 in.4.
Rust can cause a bursting force in the concrete where the ba…
Rust can cause a bursting force in the concrete where the bar is located and cause an eventual loss of cover.