In the following three problems you may assume that the effective depth for beams with one layer …

In the following three problems you may assume that the effective depth for beams with one layer of reinforcement can be calculated as (h-3 in and as (h-4 in.) for beams with two layers of reinforcement. Consider the unit weight of concrete to be 150 pcf l. A rectangular reinforced concrete beam has a width of 14 in. and a height of 33 in. The beam is simply supported with a span length of 16 ft. The beam is subjected to a uniform service live load of 7.11 klf, and the only dead load is the beam self-weight. The beam is located in an office building. Material strengths are f 60,000 psi and f J 6,000 psi, and the concrete maximum aggregate size is 0.75 in. You may assume that No. 3 stiriups will be provided for shear reinforcement. Design the flexural reinforcement. Perform all the required code checks in your design. Sketch the cross section, and show the reinforcement 2. Design a rectangular reinforced concrete beam that resists a factored positive bending moment of 270 k-ft (including all loads applied to the beam. The width of the beam is set at 16 in. Material strengths are f 60,000 psi and fc 5,000 p and the concrete maximum aggregate size is 1.00 in. You may assume that No. 3 stirrups will be provided for shear reinforcement. Perform all the required code checks in your design. Sketch the cross section, and show the dimensions and reinforcement 3. Design a 12-ft. long cantilevered rectangular reinforced concrete beam subjected to a maximum factored negative bending moment of 250 kip-ft (including all loads applied to the beam). The width of the beam should be approximately equal to half of its effective depth Material strengths are fy 60,000 psi and f c 5,000 psi. Assume the maximum aggregate size in the concrete to be 0.75 in and No. 3 stirrups for shear reinforcement. Perform all the required code checks. Sketch the cross section, and show the dimensions and reinforcement

In the following three problems you may assume that the effective depth for beams with one layer of reinforcement can be calculated as (h-3 in.). and as (h-4 in.) for beams with two layers of reinforcement. Consider the unit weight of concrete to be 150 pcf. A rectangular reinforced concrete beam has a width of 14 in. and a height of 33 in. The beam is simply supported with a span length of 16 ft. The beam is subjected to a uniform service live load of 7.11 klf. and the only dead load is the beam self-weight. The beam is located in an office building. Material strengths are f_y = 60.000 psi and f_c = 6.000 psi. and the concrete maximum aggregate size is 0.75 in. You may assume that No. 3 stirrups will be provided for shear reinforcement. Design the flexural reinforcement. Perform all the required code checks in your design. Sketch the cross section, and show the reinforcement. Design a rectangular reinforced concrete beam that resists a factored positive bending moment of 270 k-ft (including all loads applied to the beam). The width of the beam is set at 16 in. Material strengths are f_y = 60.000 psi and f_c = 5.000 psi. and the concrete maximum aggregate size is 1.00 in. You may assume that No. 3 stirrups will be provided for shear reinforcement. Perform all the required code checks in your design. Sketch the cross section, and show the dimensions and reinforcement. Design a 12-ft. long cantilevered rectangular reinforced concrete beam subjected to a maximum factored negative bending moment of 250 kip-ft (including all loads applied to the beam). The width of the beam should be approximately equal to half of its effective depth. Material strengths are f_y_= 60.000 psi and f_c = 5.000 psi. Assume the maximum aggregate size in the concrete to be 0.75 in., and No. 3 stirrups for shear reinforcement. Perform all the required code checks. Sketch the cross section, and show the dimensions and reinforcement.

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