2004spring_exam1

2004spring_exam1 - 1.054/1.541 Mechanics and Design of...

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1.054/1.541 Mechanics and Design of Concrete Structures Spring 2004 Prof. Oral Buyukozturk Massachusetts Institute of Technology 1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Exam #1 Date: Tuesday, March 16, 2004 Time: 2:30pm~4pm Note: This is an open-book and open-note exam. This exam is designed to test your knowledge of the concepts. Be brief and specific in your discussions. A high-rise building is being designed using an innovative concept for the columns. The columns have no reinforcement bars but are confined by thin steel shells, which also perform a function of formwork for the concrete. High strength concrete in conjunction with conventional steel is being used with the following properties: Concrete Uniaxial compressive strength of concrete: f c = 8100 psi ; ' c fp s i Uniaxial splitting tensile strength of concrete: ' t f = 7 ( ) ; and Young’s Modulus: c E = 40000 ' c f 6 1.0 10 + × ( ) p s i Steel Yield stress: f y = 60
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2004spring_exam1 - 1.054/1.541 Mechanics and Design of...

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