3. The following three-span beam is subjected to two concentrated dead loads as shown below, a...

 

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3. The following three-span beam is subjected to two concentrated dead loads as shown below, a uniformly-distributed dead load of 0.8 Kip/ft (including its selfweight), and live load of 1.5 kip/ft and. Assume concrete with compressive strength of 5,000 psi and reinforcing steel bars with yield strength of 60 ksi. Address the following: Poi=10kips 8 ft. 8 ft. A B C D 16 ft. 16 ft. 8 ft. Poz=5kips a. Show the possible live load scenarios over different spans. b. Find and plot the envelope of the momnet demand considering appropriate load combinations and possible live load scenarios. c. The following cross section is proposed for the entire beam. Calculate the positive and negative moment capacity, Ma, for this section (hint: Ignore the reinforcement in compression while calculating the nonimal strength). d. For the points A, B, C, and D, check if the proposed section satisfies the momnet demand. b=10" d=2" h=26" 2#9 3#9 d=24" 3. The following three-span beam is subjected to two concentrated dead loads as shown below, a uniformly-distributed dead load of 0.8 Kip/ft (including its selfweight), and live load of 1.5 kip/ft and. Assume concrete with compressive strength of 5,000 psi and reinforcing steel bars with yield strength of 60 ksi. Address the following: Poi=10kips 8 ft. 8 ft. A B C D 16 ft. 16 ft. 8 ft. Poz=5kips a. Show the possible live load scenarios over different spans. b. Find and plot the envelope of the momnet demand considering appropriate load combinations and possible live load scenarios. c. The following cross section is proposed for the entire beam. Calculate the positive and negative moment capacity, Ma, for this section (hint: Ignore the reinforcement in compression while calculating the nonimal strength). d. For the points A, B, C, and D, check if the proposed section satisfies the momnet demand. b=10" d=2" h=26" 2#9 3#9 d=24"