quiz_2_final

quiz_2_final - 1.051 Structural Engineering Design Prof....

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1.051 Structural Engineering Design Prof. Oral Buyukozturk Fall 2003 1.051 Structural Engineering Design QUIZ 2 Open Book & Notes – 90 minutes QUESTION 1. – REINFORCED CONCRETE SHORT COLUMNS (30%) A reinforced concrete short column with a square cross-section (22x22 in 2 ) shown in the figure below is reinforced with 4#11 rebars. The material properties are: ' 4 ksi, 60 ksi, 29000 ksi cy s ff E == = 22’’ 19’’ 3’’ 4#11 22’’ shear stirrup Figure 1 (a) How can you describe the failure behavior of this column under combined axial load and bending moment effects for practical design? BRIEFLY explain with the help of a sketch, indicating behavioral characteristics (No calculations required ) (b) Compute the axial load capacity, (P o ) of this column when a concentric load is applied (e=0, M=0). Assume A c =A g . (c) For balanced failure condition, determine the nominal axial load (P b ) and bending moment (M b ), and the corresponding eccentricity (e b ).
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This note was uploaded on 11/29/2011 for the course CIVIL 1.00 taught by Professor Georgekocur during the Spring '05 term at MIT.

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quiz_2_final - 1.051 Structural Engineering Design Prof....

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