QB.41. A square tied column with a side dimension of 575 mm is reinforced with 12-30 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 600 and 611 kN-m without causing a sidesway. It carries an ultimate axial load of 1348 kN comprised of an unfactored dead load of 554kN. The column has an unsupported height of 5.5 m. Use f'c = 22 MPa and concrete cover of 55. Assume k = 1. Answer the following: (1) What is the relative stiffness (or El) of the column expressed in N-mm^2. (2) Calculate the moment magnifier factor if the column is bent in single curvature. (3) Compute the design moment of the column.

QB.41. A square tied column with a side dimension of 575 mm is reinforced with 12-30 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 600 and 611 kN-m without causing a sidesway. It carries an ultimate axial load of 1348 kN comprised of an unfactored dead load of 554kN. The column has an unsupported height of 5.5 m. Use f'c = 22 MPa and concrete cover of 55. Assume k = 1. Answer the following: (1) What is the relative stiffness (or El) of the column expressed in N-mm^2. (2) Calculate the moment magnifier factor if the column is bent in single curvature. (3) Compute the design moment of the column.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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