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The handbook column tables for A500 HSS stop at HSS406x406 and you are looking for larger members. These are available from the US, as shown

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The handbook column tables for A500 HSS stop at HSS406x406 and you are looking for larger members. These are available from the US, as shown in the following table. DIMENSIONS AND SECTION PROPERTIES OF SQUARE HSS Weight per Foot Wall Thickness Nominal Size Cross Sectional Torsional Stiffness Constant J in 4 Torsional Shear Constant C in Surface Area Per Foot Area Z in. in. in. 32 X 32 X 5/8 0.625 0.500 78.4 259.83 210.72 159 37 12 482 610 51.9 12300 10100 7750 19700 15900 12000 1230 991 10.34 1045 10.51 0.375 823 46.3 0625 16 10100 242.82 197.11 149.16 0509 6370 23 52 225 80 418 500 6730 183 50 138.95 717 8140 5150 6460 386 514 103 208.79 169.89 128.74 490 19.9 38.6 49.0 66.3 35.4 5150 4110 99 0.375 0.625 0500 0.375 0.625 0.500 0.375 0.625 0500 0.375 0.625 0.500 0.375 0.625 0500 0.375 191.78 156 28 450 159 5030 4170 958 9.60 118.53 610 610 564 34.8 51.4 41.9 2210 17476 142.67 32.2 322 557 410 3190 SIE 108 32 55.7 318 3/8" 5/8 3820 2460 2830 1830 20 x 20 x 157.75 129.06 98.12 29.0 370 29.0 370 46.4 379 237 1 503 503 7.97 Using table 4-3, develop a column table for the HSS22x22x5/8 (metric HSS558x558x16). Parts: (parts a, b, and d are worth 2 marks each, part c is 4 marks) (a) After review of the differences between the design t, A and r for the same size G40 HSS and A500 HSS, you note the A500 HSS have about 10% lower values. You decide to reduce t, A, and r from the table above by that amount. (6) Check local buckling requirements with the design thickness from (a). Also, do any of the members larger than 22" square meet the local buckling requirements of S16 (our code)? (c) In developing the column table, start at KL of 0 and calculate in increments of 1000 mm until the CI 10.4.2.1 SLS limit is exceeded (or to 18 m, whichever comes first). Remember the KL values are based on the least radius of gyration. (d) If you were using a 10 m long column with the y-axis (only) supported at mid-height and Kx Ky =1.0, what is the capacity (ie the C) of the HSS558x558x16? The handbook column tables for A500 HSS stop at HSS406x406 and you are looking for larger members. These are available from the US, as shown in the following table. DIMENSIONS AND SECTION PROPERTIES OF SQUARE HSS Weight per Foot Wall Thickness Nominal Size Cross Sectional Torsional Stiffness Constant J in 4 Torsional Shear Constant C in Surface Area Per Foot Area Z in. in. in. 32 X 32 X 5/8 0.625 0.500 78.4 259.83 210.72 159 37 12 482 610 51.9 12300 10100 7750 19700 15900 12000 1230 991 10.34 1045 10.51 0.375 823 46.3 0625 16 10100 242.82 197.11 149.16 0509 6370 23 52 225 80 418 500 6730 183 50 138.95 717 8140 5150 6460 386 514 103 208.79 169.89 128.74 490 19.9 38.6 49.0 66.3 35.4 5150 4110 99 0.375 0.625 0500 0.375 0.625 0.500 0.375 0.625 0500 0.375 0.625 0.500 0.375 0.625 0500 0.375 191.78 156 28 450 159 5030 4170 958 9.60 118.53 610 610 564 34.8 51.4 41.9 2210 17476 142.67 32.2 322 557 410 3190 SIE 108 32 55.7 318 3/8" 5/8 3820 2460 2830 1830 20 x 20 x 157.75 129.06 98.12 29.0 370 29.0 370 46.4 379 237 1 503 503 7.97 Using table 4-3, develop a column table for the HSS22x22x5/8 (metric HSS558x558x16). Parts: (parts a, b, and d are worth 2 marks each, part c is 4 marks) (a) After review of the differences between the design t, A and r for the same size G40 HSS and A500 HSS, you note the A500 HSS have about 10% lower values. You decide to reduce t, A, and r from the table above by that amount. (6) Check local buckling requirements with the design thickness from (a). Also, do any of the members larger than 22" square meet the local buckling requirements of S16 (our code)? (c) In developing the column table, start at KL of 0 and calculate in increments of 1000 mm until the CI 10.4.2.1 SLS limit is exceeded (or to 18 m, whichever comes first). Remember the KL values are based on the least radius of gyration. (d) If you were using a 10 m long column with the y-axis (only) supported at mid-height and Kx Ky =1.0, what is the capacity (ie the C) of the HSS558x558x16

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