score 24. Calculations (in a total of 45 points) 1. Select the lightest W section to carry an axial compression load as

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Score 24 Calculations In A Total Of 45 Points 1 Select The Lightest W Section To Carry An Axial Compression Load As 1 (913.59 KiB) Viewed 10 times

score 24. Calculations (in a total of 45 points) 1. Select the lightest W section to carry an axial compression load as indicated. The column is 20ft long and The base is fixed and the top is pinned. K, = 0.8;K, =0.8. Case: The member carries 85 kips dead load and 255 kips live load, and Use Load and Resistance Factor Design and the steel is A372 Grade 50(F, = 50 ksi). Check: Width/Thickness Limits her and A for "Local buckling slenderness limits” Columns (20 points) 95 253 Slim JF,' = by sa 21 85 kips P = 255 kips L = 20-0 Available Critical Stress in Axial Compression tables Local buckling Ą y KL (KL), PH Seni Criteria Section kips ksi f h Sq in. in. 1 be 2t 16 W10x60 530 74.7 29.92 7.41 18.7 16 W10x54 471 75.0 29.8 8.15 21.2 17.7 2.57 15.8 2.56 17.0 2.51 19.1 3.02 16 499 76.5 29.35 7.82 27.0 16 640 63.6 33.52 9.92 24.9 W12x58 W12x65 W14x61 wi4x68 16 17.9 2.45 514 78.4 28.68 7.75 30.4 16 20 2.46 577 78.0 28.8 6.97 27.5