CEE461_HomeworkSet1_12252018.pdf

# CEE461_HomeworkSet1_12252018.pdf - CEE461 – Reinforced...

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CEE461 – Reinforced Concrete I University of Illinois at Urbana-Champaign Gurfinkel and Asem Spring 2019 Name:____________________________ © 2019 1 Homework Set 1 Follow Homework Assignment requirements in the Syllabus. Due date: Thursday, January 24, 2019 Bending of Linearly Elastic Beams For the given reinforced concrete (RC) flanged section, do the following and summarize your answers in Table 1. Figure 1 Reinforced concrete flanged section subjected to positive bending (i.e., tension in the bottom). Note that t f = flange thickness, b f = flange width and b w = web width. The top reinforcement and stirrups are not shown for clarity. CG is the centroid of steel rebars. Note: concentrating all five rebars at CG may be used for calculations. h = 24 in t f = 6 in d = 20 in b w = 12 in b f = 24 in 5 #9 bars total Gr. 60 (f y = 60 ksi) f ' c = 4000 psi CG

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CEE461 – Reinforced Concrete I University of Illinois at Urbana-Champaign Gurfinkel and Asem Spring 2019 © 2019 2 Problem 1. Consider the section uncracked. Transform the steel into equivalent concrete (Use n = 8 for this case and verify). Find the vertical distance, c, from the Neutral Axis to the top
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• Arboleda
• Second moment of area, Rebar, University of Illinois

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