Question 10 3 Points This Is A 3 Point Question Consider A Column Laterally Braced Against Sidesway As Shown Below Th 1 (106.02 KiB) Viewed 24 times
Question 10 (3 points) This is a 3 POINT question Consider a column laterally braced against sidesway as shown below. The column has a cross section of 500x500 mm with f'c = 30 MPa. The specified (unfactored) dead & live loads on the column are as shown below. The moments result in single curvature, L = 4.3 m 1800 mm 500 mm T 150 500 mm 400 Beam Section (b) L = 9.0 m 375 mm 12-25M 500 mm 500 mm L = 4.3 m 500 mm = 7.0 m = 7.0 m Column Section Unfactored Loads Dead load Live load 1000 500 Axial load (kN) Top moment (kN m) Bottom moment (kN·m) 100 50 56 20
Using the load combination (1.25D +1.5L), determine the following: Blank 1: Ba factor (round to three decimals, i.e 0.735) Blank 2: Cm factor (round one decimal, i.e. 0.7) Blank 3: Euler buckling load Pc in KN if El = 3.25 x 1013 kN · mm2 = **** Note: Use Pl on calculator or 3.14159, not 3.14. Round answer so there's no decimal; i.e. 9531 not 9530.8) Blank 4: factor 8 (round to 2 decimals, i.e. 1.15) Blank 5: Amplified moment Mc (round so there are no decimals, i.e. 121 not 120.8) Blank 6: The code requires us to check that Mc is larger than a minimum moment which considers accidental eccentricity. What is that minimum moment in KNm (round so there are no decimals, i.e. 50 not 50.2)
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