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Stud Dimensions

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   1.   Limiting heights are computed in accordance with CAN/CSA-S136-12 « North American specification  for the design of cold-formed steel structural members ». 2.   Steel shall meet the requirements of CAN/CSA-S136-12 with a minimum yield strength of 33 ksi (228 MPa). The modulus of elasticity considered is 29 500 ksi (203 395 MPa). 3.   The increase in yield strength from the cold work of forming is conservatively neglected. 4.   Perforations are assumed to be located at mid-depth and spaced at a minimum of 24 in (610 mm) from centre to centre. The distance from the centerline of the last perforation to the end of a stud is assumed to be 12 in (305 mm) minimum. 5.   The deflection inertia used to compute the limiting heights includes the effects of local buckling at the stress level resulting from specified live loads (approx. 0.6Fy). 6.   Limiting heights are limited by the end shear, mid-span moment at factored loads and the allowable deflection at service loads. The factored shear resistance and the factored bending resistance are based on the perforated section. Sheating providing full lateral support on both sides of the studs is assumed. The sheatings are to have adequate durability, strength and rigidity to prevent the studs from buckling laterally and to resist the torsional component of loads not applied through the shear centre. In addition to the sheating requirements outlined above, provide bridging at 48 in (1 219 mm) from centre to centre, or less, in order to align members and to provide the necessary structural integrity during construction and in the completed structure. Design the bridging to prevent stud rotation and translation about minor the minor axis. 7.   The stud with a depth of 6 in (152.4 mm) has a ratio h/t higher than the limit of 200 required by CSA-S136 for the web width-to-thickness limitations. This stud need to be used with a sheating providing full lateral support on both sides.    Imperial data Tableau 1 : Stud dimensions Depth (in) Width (in) Stiffener (in) Thickness (in) Inside radius (in) Fy (ksi) h/t web 1.625 1.250 0.250 0.0172 0.125 33 77.9 2.500 1.250 0.250 0.0172 0.125 33 128.8 3.625 1.250 0.250 0.0172 0.125 33 194.2 6.000 †  1.250 0.250 0.0172 0.125 33 332.3 †  see note 7  Tableau 2 : Maximum stud heights (lateral wind loads) Service wind load 5 (psf) 7.5 (psf) 10 (psf) Factored wind load 7 (psf) 10.5 (psf) 14 (psf) Stud Spacing c/c L/120 L/240 L/360 L/120 L/240 L/360 L/120 L/240 L/360 1-5/8'' 12'' 8'-8'' 7'-2'' 6'-3'' 7'-1'' 6'-3'' 5'-6'' 6'-2'' 5'-8'' 5'-0'' 16'' 7'-6'' 6'-6'' 5'-8'' 6'-2'' 5'-8'' 5'-0'' 5'-4'' 5'-2'' 4'-6'' 24'' 6'-2'' 5'-8'' 5'-0'' 5'-0'' 5'-0'' 4'-4'' 4'-4'' 4'-4'' 3'-11'' 2-1/2'' 12'' 11'-1'' 9'-10'' 8'-7'' 9'-0'' 8'-7'' 7'-6'' 7'-10'' 7'-9'' 6'-9'' 16'' 9'-7'' 8'-11'' 7'-9'' 7'-10'' 7'-9'' 6'-9'' 6'-9'' 6'-9'' 6'-2'' 24'' 7'-10'' 7'-9'' 6'-9'' 6'-5'' 6'-5'' 5'-11'' 5'-6'' 5'-6'' 5'-5'' 3-5/8'' 12'' 13'-7'' 12'-11'' 11'-4'' 11'-1'' 11'-1'' 9'-10'' 9'-7'' 9'-7'' 8'-11'' 16'' 11'-9'' 11'-9'' 10'-3'' 9'-7'' 9'-7'' 8'-11'' 8'-3'' 8'-3'' 8'-2'' 24'' 9'-7'' 9'-7'' 8'-11'' 7'-10'' 7'-10'' 7'-10'' 6'-9'' 6'-9'' 6'-9'' 6'' †  12'' 18'-1'' 18'-1'' 16'-8'' 14'-9'' 14'-9'' 14'-7'' 12'-9'' 12'-9'' 12'-9'' 16'' 15'-8'' 15'-8'' 15'-2'' 12'-9'' 12'-9'' 12'-9'' 10'-10'' 10'-10'' 10'-10'' 24'' 12'-9'' 12'-9'' 12'-9'' 9'-7'' 9'-7'' 9'-7'' 7'-2'' 7'-2'' 7'-2'' †  see note 7      Metric data Tableau 3 : Stud dimensions Depth (mm) Width (mm) Stiffener (mm) Thickness (mm) Inside radius (mm) Fy (MPa) h/t web 41.275 31.750 6.350 0.4369 3.175 228 77.9 63.500 31.750 6.350 0.4369 3.175 228 128.8 92.075 31.750 6.350 0.4369 3.175 228 194.2 152.400 †  31.750 6.350 0.4369 3.175 228 332.3 †  see note 7  Tableau 4 : Maximum stud heights (lateral wind loads) Service wind load 0.25 (kPa) 0.375 (psf) 0.5 (psf) Factored wind load 0.35 (kPa) 0.525 (psf) 0.7 (psf) Colombage Espacement c/c L/120 L/240 L/360 L/120 L/240 L/360 L/120 L/240 L/360 41.275 305 2 666 2 204 1 925 2 177 1 925 1 682 1 885 1 749 1 528 406 2 309 2 002 1 749 1 885 1 749 1 528 1 633 1 589 1 388 610 1 885 1 749 1 528 1 539 1 528 1 335 1 333 1 333 1 213 63.500 305 3 390 3 004 2 624 2 768 2 624 2 292 2 397 2 384 2 083 406 2 936 2 729 2 384 2 397 2 384 2 083 2 076 2 076 1 892 610 2 397 2 384 2 083 1 957 1 957 1 819 1 695 1 695 1 653 92.075 305 4 143 3 955 3 455 3 383 3 383 3 019 2 930 2 930 2 743 406 3 588 3 588 3 139 2 930 2 930 2 743 2 537 2 537 2 492 610 2 930 2 930 2 743 2 392 2 392 2 392 2 072 2 072 2 072 152.400 †  305 5 522 5 522 5 092 4 509 4 509 4 449 3 905 3 905 3 905 406 4 782 4 782 4 627 3 905 3 905 3 905 3 314 3 314 3 314 610 3 905 3 905 3 905 2 945 2 945 2 945 2 209 2 209 2 209 Limiting heights in millimeters †  see note 7  

Deen2012-2nd

Sep 22, 2019
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