QB.43. A square tied column with a side dimension of 470 mm is reinforced with 12- 25 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 654 and 699 kN-m without causing a sidesway. It carries an ultimate axial load of 1391 kN comprised of an unfactored dead load of 562kN. The column has an unsupported height of 4.6 m. Use f'c = 21.3 MPa and concrete cover of 70. Assume k = 1. Answer the following: (1) What is the relative stiffness (or El) of the column
QB.43. A square tied column with a side dimension of 470 mm is reinforced with 12- 25 mm dia. bars distributed equally on all faces. The column is subjected to factored end moments of 654 and 699 kN-m without causing a sidesway. It carries an ultimate axial load of 1391 kN comprised of an unfactored dead load of 562kN. The column has an unsupported height of 4.6 m. Use f'c = 21.3 MPa and concrete cover of 70. Assume k = 1. Answer the following: (1) What is the relative stiffness (or El) of the column
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![QB.43. A square tied column with a side dimension of 470 mm is reinforced with 12- 25 mm dia. bars distributed equally on all
faces. The column is subjected to factored end moments of 654 and 699 kN-m without causing a sidesway. It carries an ultimate
axial load of 1391 kN comprised of an unfactored dead load of 562kN. The column has an unsupported height of 4.6 m. Use f'c =
21.3 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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F236bdb97-d3f0-4dd2-8f82-64d81b949614%2Fc5fff5e3-2e10-4243-a4bf-6771875043d0%2Fpq43q0n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QB.43. A square tied column with a side dimension of 470 mm is reinforced with 12- 25 mm dia. bars distributed equally on all
faces. The column is subjected to factored end moments of 654 and 699 kN-m without causing a sidesway. It carries an ultimate
axial load of 1391 kN comprised of an unfactored dead load of 562kN. The column has an unsupported height of 4.6 m. Use f'c =
21.3 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.
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