CIVE 420 Final, Spring 2010

FACULTY OF ENGINEERING AND ARCHITECTURE AMERICAN UNIVERSITY OF BEIRUT Department of Civil & Environmental Engineering CIVE 420 - Reinforced Concrete } Final Exam Spring 2009-2010 cy Allowed a two-page summary Prof. M. Harajli Use of Programmable Calculators is not allowed Name: ID#: RETURN THE QUESTION SHEET WITH THE ANSWER BOOKLET Problem No. 1 (25%) Given a simply supported beam with a box section as shown 1n the figure below. Span Jength = 14,6 m; superimposed dead load = 5.0 T/m, and a live load of 3.5 Tim. f, = 280 kgfcm?; fy = 4200 kg/cm’ . z f @) Calculate the area of flexural reinforcement A, at mid¢span required for resisting the applied load in accordance with the ACI Building code, (Learning outcome 5\Is points) (ii) Estimate the arca of shear reinforcement A,fs (cm’/em) at the critical support a) section using 4-leg stirrups as shown (of diameter and spacing to be determined), Use arte the “accurate” approach for calculating the shear strength V,; of concrete. Learnin, 2 “accurate ” app 8 £ g outcome.6)(10 points). . JDO Gur $ D iat i eG Wis