A reinforced concrete T beam Concrete has the following dimensions b_c = 48 in. b_w = 16 in. h_f … 1 answer below »

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10 100 Problem A reinforced concrete T beam Concrete has the following dimensions: be w 48 in., bw 16 in., ht 5 in., and h 25 in, The effective depth d 20 in. Concrete, f 6000 psi and fy 60000 psi. The reinforced concrete is assumed to weight 150 Using approximately one-half the maximum tensile reinforcement (p 0.5pmax) permitted by the ACI Code (a) Select the actual size of bar and number to be used. (b) Determine the design moment capacity Mn) of the girder (c) If the beam span length used is 30 ft, and if in addition to its own weight (self weight) it must support a superimposed dead load of 0.475 kip/ft, what uniform service live load Problem #3 A rectangular concrete beam of width b 24 in. is limited by architectural considerations to a maximum total depth h 16 in. It must carry a total factored load moment M 400 ft-kips. Design the flexural reinforcement for this member, using compression steel if necessary. Allow d 3 in. to the center of the bars from the compression or tension face of the beam. Material strengths are fy 60,000 psi and f 4000 psi. Select reinforcement to provide the needed areas, and show a sketch of your final design. Assume No. 4 stirrups are used for shear. Problem #4 A rectangular concrete beam is limited to a cross section of b 12 in. and d 18.5 in. to resist an ultimate moment Mu 4000 k-in. Compute the required tension reinforcement and if needed compression reinforcement. Material strengths are fy 40,000 psi and f% 3000 psi d 2.5 in. d 11.5

A reinforced concrete T beam Concrete has the following dimensions b_c = 48 in. b_w = 16 in. h_f = 5 in, and h = 25 in The effective depth d = 20 in. Concrete, f ‘c = 6000 psi and f_y = 60000 psi. The reinforced concrete is assumed to weight 150 lb/ft’ (pcf) Using approximately one-hall the maximum tensile reinforcement (rho = 0.5 rho_max) permitted by the ACI Code Select the actual size of bar and number to be used. Determine the design moment capacity (Phi M_n) of the girder. If the beam span length used is 30 ft. and if in addition to its own weight (self-weight) it must support a superimposed dead load of 0 475 kip/ft. what uniform service live load (W_L) the beam can carry? A rectangular concrete beam of width b = 24 in. is limited by architectural considerations to a maximum total depth h = 16 in. It must carry a total factored load moment M_u = 400 ft-kips. Design the flexural reinforcement for this member, using compression steel if necessary. Allow d’ = 3 in. to the center of the bars from the compression or tension face of the beam. Material strengths are f_y = 60,000 psi and f/c = 4000 psi. Select reinforcement to provide the needed areas, and show a sketch of your final design. Assume No. 4 stirrups are used for shear. A rectangular concrete beam is limited to a cross section of b = 12 in. and d = 18.5 in. to resist an ultimate moment Mu = 4000 k-in. Compute the required tension reinforcement and if needed compression reinforcement. Material strengths are f_y = 40.000 psi and f/c – 3000 psi d’ = 2 5 in.

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