(Answered): For the rectangular beam shown below, concrete strength at 28 days is 4,000 psi and Grade 60 steel ...

For the rectangular beam shown below, concrete strength at 28 days is 4,000 psi and Grade 60 steel is used (area of each #7 and #8 reinforcing bar is 0.60 in., and 0.79 in, respectively). The beam is made of normal-weight concrete. Calculate the mid-span deflection under total dead and live loads after 30 years. Ignore effects of compression reinforcement in calculation of long-term deflections. Use computer software, or text books to get the bending moments in this statically- indeterminate beam. WD 1.2 k/ft (includes girder weight) & w 1.2 kip/ft 4-48 4-47 24 ft 12" 12" 3" 4-H8 30" 30" 27" | 4-H7 Section at Support A Section at Mid-span