QB.80. A square tied column with a side dimension of 470 mm is reinforced with 12- 20 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 605 and 646 kN-m without causing a sidesway. It carries an ultimate axial load of 1126 kN comprised of an unfactored dead load of 577kN. The column has an unsupported height of 4.7 m. Use f'c = 20 MPa and concrete cover of 70. 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.80. A square tied column with a side dimension of 470 mm is reinforced with 12- 20 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 605 and 646 kN-m without causing a sidesway. It carries an ultimate axial load of 1126 kN comprised of an unfactored dead load of 577kN. The column has an unsupported height of 4.7 m. Use f'c = 20 MPa and concrete cover of 70. 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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