Assignment-7.04

Assignment-7.04 - CIVL 232 Structural Concrete Design...

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Unformatted text preview: CIVL 232 Structural Concrete Design Assignment 7 (Tuesday, 13 May 2004; Due date: Tuesday, 18 May 2004) Short columns with uniaxial and biaxial bending, slender columns 1. Design the longitudinal steel and links for a 350 mm square, short braced column which supports the following axial load: Gk = 1,000 kN, Qk = 1,000 kN, given fcu = 40 N/mm2, fy = 460 N/mm2, fyv = 250 N/mm2. 2. An internal column shown in Fig. 7.2 in a braced two-storey building supports approximately symmetrical arrangements of beams (350 × 600 mm and 350 × 500 mm in major and minor axes respectively), resulting in characteristic dead and imposed loads each of 1000 kN being applied to the column. The column is 350 mm square and the storey height is 5 m. Design the longitudinal reinforcement and links, given fcu = 40 N/mm2, fy = fyv = 460 N/mm2. 600 500 Column 350mm square Fig. 7.2 3. Design the longitudinal reinforcement and links for a 300 mm square, short-braced column which supports: (a) an ultimate axial load of 1500 kN and bending moment of 70 kNm about x-x axis; (b) an ultimate axial load of 1500 kN and bending moments of 50 kNm about x-x axis and 35 kNm about y-y axis. fcu = 40 N/mm2, fy = 460 N/mm2, fyv = 250 N/mm2. 1 4.* A braced slender column of 400 × 500 mm carries an ultimate axial load of 3,000 kN with the end moments of 200 kNm and 275 kNm about major axis x-x as shown in Fig. 7.4. Determine the area of reinforcement when the effective height is 7.5 m for bending about both axes. fcu = 40 N/mm2, fy = 460 N/mm2. d ' = 50 Fig. 7.4 * Optional 2 ...
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This note was uploaded on 12/24/2011 for the course CIVL 232 taught by Professor Jskuang during the Spring '06 term at HKUST.

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