A short rectangular column 500 mm on one side and 800 mm on the other side. It is reinforced with 10-28-mm-diameter longitudinal bars equally distributed to the shorter sides of the column. The centroid of the bars are 76 mm from the concrete surface. Use f'c = 28 MPa and fy = 415 MPa. NSCP 2015 required a = cB1 where B1 = 0.85 if f'c <= 28 MPa and B1 = 0.85 - (0.05/7)(f'c - 28) otherwise. Determine the following at balanced strain condition if the reduction factor is 0.65: Distance of neutral axis from concrete compression fiber, cb = _________ mm Design Axial Strength, øPn = ____________ kN Design Moment Strength, øMn = _________ kN-m Write all asnwers to the nearest whole number.
A short rectangular column 500 mm on one side and 800 mm on the other side. It is reinforced with 10-28-mm-diameter longitudinal bars equally distributed to the shorter sides of the column. The centroid of the bars are 76 mm from the concrete surface. Use f'c = 28 MPa and fy = 415 MPa. NSCP 2015 required a = cB1 where B1 = 0.85 if f'c <= 28 MPa and B1 = 0.85 - (0.05/7)(f'c - 28) otherwise. Determine the following at balanced strain condition if the reduction factor is 0.65: Distance of neutral axis from concrete compression fiber, cb = _________ mm Design Axial Strength, øPn = ____________ kN Design Moment Strength, øMn = _________ kN-m Write all asnwers to the nearest whole number.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A short rectangular column 500 mm on one side and 800 mm on the other side. It is reinforced with 10-28-mm-diameter longitudinal bars equally distributed to the shorter sides of the column. The centroid of the bars are 76 mm from the concrete surface. Use f'c = 28 MPa and fy = 415 MPa. NSCP 2015 required a = cB1 where B1 = 0.85 if f'c <= 28 MPa and B1 = 0.85 - (0.05/7)(f'c - 28) otherwise.
Determine the following at balanced strain condition if the reduction factor is 0.65:
Distance of neutral axis from concrete compression fiber, cb = _________ mm
Design Axial Strength, øPn = ____________ kN
Design Moment Strength, øMn = _________ kN-m
Write all asnwers to the nearest whole number.
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