A 420mm x 420mm concrete tied column is not braced against sidesway. It has an unsupported length of 5m. Assume effective length factor k = 1.4. Use f’c = 28 MPa and fy = 276 MPa. Given: Pu = 3500 kN, M2ns = 160 kNm, M2s = 145 kNm, ∑▒P_u = 90000 kN, ∑▒P_c = 247000 kN. (a) 1 pt. Determine the moment magnification factor for frames not braced against sidesway. (b) 1 pt. Determine the magnified factored moment (kN-m) to be used for design of the column. (c) 1 pt. Determine the minimum value of factored end moment (kN-m) for the given cross section as specified by NSCP.

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A 420mm x 420mm concrete tied column is not braced against sidesway. It has an unsupported length of 5m. Assume effective length factor k = 1.4. Use f’c = 28 MPa and fy = 276 MPa. Given: Pu = 3500 kN, M2ns = 160 kNm, M2s = 145 kNm, ∑▒P_u = 90000 kN, ∑▒P_c = 247000 kN. (a) 1 pt. Determine the moment magnification factor for frames not braced against sidesway. (b) 1 pt. Determine the magnified factored moment (kN-m) to be used for design of the column. (c) 1 pt. Determine the minimum value of factored end moment (kN-m) for the given cross section as specified by NSCP.

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hokage69 2024-12-16T12:25:08+05:00 1 Answer 13 views Beginner
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  1. Mechanical Engineering Expert
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    2024-12-16T17:22:47+05:00
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