A concrete floor system consists of parallel T beams spaced 10 ft on centers and spanning...

  

Transcribed Image Text:

A concrete floor system consists of parallel T beams spaced 10 ft on centers and spanning 32 ft between simple supports. The 6 in. thick slab is cast monolithically with T beam webs having width bw 14 in. and total depth, measured from the top of the slab, of h=28 in. The effective depth, d will be taken 3 in. less than the total depth. In addition to its own weight, each T beam must carry a superimposed dead load of 50 psf and service live load of 225 psf. Material strengths are fy-60,000 psi and fe3D4,000 psi. Determine the required tensile steel area and select the reinforcement needed for a typical interior T- beam member. Make sure to include a sketch of the midspan cross section, including the reinforcement. Problem 3: Repeat Problem 2 above assuming that beff is limited by a maximum of 25 in. and the slab is 4 in. thick. A concrete floor system consists of parallel T beams spaced 10 ft on centers and spanning 32 ft between simple supports. The 6 in. thick slab is cast monolithically with T beam webs having width bw 14 in. and total depth, measured from the top of the slab, of h=28 in. The effective depth, d will be taken 3 in. less than the total depth. In addition to its own weight, each T beam must carry a superimposed dead load of 50 psf and service live load of 225 psf. Material strengths are fy-60,000 psi and fe3D4,000 psi. Determine the required tensile steel area and select the reinforcement needed for a typical interior T- beam member. Make sure to include a sketch of the midspan cross section, including the reinforcement. Problem 3: Repeat Problem 2 above assuming that beff is limited by a maximum of 25 in. and the slab is 4 in. thick.