Notes taken by students

Content of classes Notes taken by students

Recitation# 6 0fycd.a121y Monday 10/12 a As fu 0.85ftb The questions below are from Midterm exams in previous years:

Q1. a) Find the Area of Steel required for this beam. simplyd he Are supportedy beamd

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Syracuse University School of Architecture ARC311 Structures II Fall 2020 Prof. Sinead C. Mac Namara Niu qok.ftxl2in1ft ok.ind txl2in1ft h zin zo ok zin 1o

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Q1b)Show on the profile and both sections here where the reinforcing steel for the beam in part a) should be A c l B i i As_1,18ins locatetherebarattensione find IWucBMD Assurea h13 d h 2 find Asthrou ughitevation

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ooo ooo 4 5 3 5 Q2. a) Find the Area of Steel required for a 40 ft long simply supported beam with a live load of 0.3 kips/ft. You may assume that the beam is 24”high and 12” wide. Don’t forget to calculate self-weight.

Weight concrete = 150 lb/ft2 f’c = 4ksi fy = 60 ksi = 0.9

b) Determine what combination of rebar (see chart attached will be best (if cover is 2” and the spaces between bars must be 1” or 1 bar diameter whichever is smaller). As1,81in y 3 0 3 bar c1 c 12space 12cover_width beam chhecessary 12cL 12oz q in ni wid bd Lc2 12 12 zo matchintable 3 8 numberofbar barno diameter 1in barnumber 11closasop 1cloosas 1 osas c 12 then 3 9 barsfit on a 12 24beam is s okay

In class material