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4. A 12"X20" tied column is to be used in a braced frame. The distance from the column edge to the c.g. of the bars is 3 inches, fo= 4 ksi, fy = 60 ksi and unsupported length, lu= 16 feet. If k=0.8, Pu=500 kips, factored moments M16 = 80 ft-kips and M2 = 100 ft- kips and unfactored PD = 120 kips, select reinforcement (bar size and number of bars) required. Tie design and sketch are not required. Assume the column bends about strong axis and in single curvature and the bars are placed in two faces only. 12" 3' # 144 20" ++

4. A 12"X20" tied column is to be used in a braced frame. The distance from the column edge to the c.g. of the bars is 3 inches, fo= 4 ksi, fy = 60 ksi and unsupported length, lu= 16 feet. If k=0.8, Pu=500 kips, factored moments M16 = 80 ft-kips and M2 = 100 ft- kips and unfactored PD = 120 kips, select reinforcement (bar size and number of bars) required. Tie design and sketch are not required. Assume the column bends about strong axis and in single curvature and the bars are placed in two faces only. 12" 3' # 144 20" ++

Structural Analysis
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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4. A 12"X20" tied column is to be used in a braced frame. The distance from the column edge to the c.g. of the bars is 3 inches, fo= 4 ksi, fy = 60 ksi and unsupported length, lu= 16 feet. If k=0.8, Pu=500 kips, factored moments M16 = 80 ft-kips and M2 = 100 ft- kips and unfactored PD = 120 kips, select reinforcement (bar size and number of bars) required. Tie design and sketch are not required. Assume the column bends about strong axis and in single curvature and the bars are placed in two faces only. 12" 3' # 144 20" ++
Transcribed Image Text:4. A 12"X20" tied column is to be used in a braced frame. The distance from the column edge to the c.g. of the bars is 3 inches, fo= 4 ksi, fy = 60 ksi and unsupported length, lu= 16 feet. If k=0.8, Pu=500 kips, factored moments M16 = 80 ft-kips and M2 = 100 ft- kips and unfactored PD = 120 kips, select reinforcement (bar size and number of bars) required. Tie design and sketch are not required. Assume the column bends about strong axis and in single curvature and the bars are placed in two faces only. 12" 3' # 144 20" ++
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