Question

A rectangular reinforced concrete beam of span 16 ft supports a concentrated load of 40 kips at mid-point of the beam and a uniformly-distributed load of 4 kips/ft over the entire span. Given: (a) The breadth of the beam is 18 inches. (b) Concrete compressive strength, fc, is 3500 psi. (c) Rebar is Grade 40 steel i) Determine the maximum moment and maximum shear acting on the beam. ii) Determine the minimum effective depth 'd' of the beam section (rounded to the nearest integer). 111) Specify the gauge number of the longitudinal tensile reinforcement. Use six rebars. iv) Determine if the development length of the tensile reinforcement is satisfactory. v) Determine the maximum spacing of web (shear) reinforcement. Use No. 4 stirrups. vi) Determine the required minimum extent of shear reinforcement into the beam. vii) Sketch a longitudinal section and a transverse section of the beam, Show beam size, effective and actual depths, tensile reinforcement and location, and stirrup location and spacing.

Answer 1