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StiffWall® Column

TSN_SW_Column

US Patent # 6,892,504

StiffWall® Column is a component of TSN's StiffWall System (x-braced shear walls), designed to carry loads concentrically from the point of applied loads to the foundation or other termination point, that utilizes light gage straps on both sides of the wall for shear resistance. StiffWall Column provides superior quality with high yield ASTM A1003 steel and hot-dipped galvanized coating for long-term durability. It is designed to fit inside of TSN's StiffWall Boot Kit, and is specified using simple nomenclature indicating only essential design requirements for each shear wall element. The StiffWall Column comes with a boot pre-assembled on each end, minimizing tolerance issues during erections. Simply specify the clear span of the bearing wall system and TSN will ship the Column/Boot assembly to meet the given wall height at a tolerance of +0/-1/8".

Value:

  • Designed and manufactured to meet the performance requirements of the project.
  • Only mill certified high strength steel is used.
  • Exceeds industry standards for sizes and loads.
  • Tested for multi-story application and capable of carrying loads present in 10 story buildings.
  • Meets or exceeds both strength and stiffness requirements of the applicable building code.
  • End posts for the shear wall.
  • Wider flange and additional return lips provide an increased load capacity over standard steel stud section.
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Product Information
Stiffwall

Material Composition

ASTM A1003/A1003M or ASTM A653/A653M, Grade 50 (340), 50ksi (340MPa) minimum yield strength, 65ksi (450 MPa) minimum tensile strength, G-60 (Z180) hot-dipped galvanized coating; or equivalent.

TSN_StiffWall_Column_Nomenclature
Single Column
StiffWall_Column_Shape_Key-Single
Back-to-Back Column
StiffWall_Column_Shape_Key-B2B
Single and Back-to-Back StiffWall® Column Product Profile
Section
(All 50 ksi)
Overall Depth Flange Width Return Lip 1 Return Lip 2 Inside Bend Radius Design Thickness Unit Weight
D B d1 d2 R t lbs/ft
(in) (in) (in) (in) (in) (in)
350C/STW200-33 3.139 2.0 0.5892 0.5 0.105 0.0346 1.035
350C/STW200-43 3.139 2.0 0.6102 0.5 0.105 0.0451 1.344
350C/STW200-54 3.139 2.0 0.6332 0.5 0.105 0.0566 1.680
350C/STW200-68 3.139 2.0 0.6626 0.5 0.105 0.0713 2.104
350C/STW200-97 3.139 2.0 0.7234 0.5 0.105 0.1017 2.967
350C/STW200-118 3.139 2.0 0.7684 0.5 0.105 0.1242 3.587
362C/STW200-33 3.264 2.0 0.5892 0.5 0.105 0.0346 1.050
362C/STW200-43 3.264 2.0 0.6102 0.5 0.105 0.0451 1.364
362C/STW200-54 3.264 2.0 0.6332 0.5 0.105 0.0566 1.704
362C/STW200-68 3.264 2.0 0.6626 0.5 0.105 0.0713 2.135
362C/STW200-97 3.264 2.0 0.7234 0.5 0.105 0.1017 3.010
362C/STW200-118 3.264 2.0 0.7684 0.5 0.105 0.1242 3.639
400C/STW200-33 3.639 2.0 0.5892 0.5 0.105 0.0346 1.094
400C/STW200-43 3.639 2.0 0.6102 0.5 0.105 0.0451 1.421
400C/STW200-54 3.639 2.0 0.6332 0.5 0.105 0.0566 1.776
400C/STW200-68 3.639 2.0 0.6626 0.5 0.105 0.0713 2.226
400C/STW200-97 3.639 2.0 0.7234 0.5 0.105 0.1017 3.140
400C/STW200-118 3.639 2.0 0.7684 0.5 0.105 0.1242 3.798
550C/STW250-43 5.139 2.5 0.6102 0.5 0.105 0.0451 1.805
550C/STW250-54 5.139 2.5 0.6332 0.5 0.105 0.0566 2.258
550C/STW250-68 5.139 2.5 0.6626 0.5 0.105 0.0713 2.832
550C/STW250-97 5.139 2.5 0.7234 0.5 0.105 0.1017 4.005
550C/STW250-118 5.139 2.5 0.7684 0.5 0.105 0.1242 4.853
600C/STW250-43 5.639 2.5 0.6102 0.5 0.105 0.0451 1.882
600C/STW250-54 5.639 2.5 0.6332 0.5 0.105 0.0566 2.354
600C/STW250-68 5.639 2.5 0.6626 0.5 0.105 0.0713 2.954
600C/STW250-97 5.639 2.5 0.7234 0.5 0.105 0.1017 4.178
600C/STW250-118 5.639 2.5 0.7684 0.5 0.105 0.1242 5.064
800C/STW250-43 7.639 2.5 0.6102 0.5 0.105 0.0451 2.189
800C/STW250-54 7.639 2.5 0.6332 0.5 0.105 0.0566 2.739
800C/STW250-68 7.639 2.5 0.6626 0.5 0.105 0.0713 3.439
800C/STW250-97 7.639 2.5 0.7234 0.5 0.105 0.1017 4.871
800C/STW250-118 7.639 2.5 0.7684 0.5 0.105 0.1242 5.908
Standard (S) section studs will not fit in the StiffWall Boot and should not be considered as a substitute for the StiffWall Column.
 
 
Built-up StiffWall® Column Sections
Built-up_StiffWall_Column_Shape_Key.png
Built-up_StiffWall_Column_Shape_Profile_3pc.png
Built-up_StiffWall_Column_Shape_Profile_4pc_3.62-4in.png
Built-up_StiffWall_Column_Shape_Profile_4pc_6-8in.png
Built-up_StiffWall_Column_Shape_Profile_5pc.png
Built-up StiffWall® Column Product Profile
Depth
(in)
Section
(All 50 ksi)
Section
(All 50 ksi)
Overall Depth Flange Width Return Lip 1 Design Thickness Unit Weight
D B d1 t (lbs/ft)
(in) (in) (in) (in)
350 (3P) 350C/STW200-97 (2) 350C/STW200-97 3.139 2.000 0.7234 0.1017 7.921
275S137-97 2.750 1.375 0.5000 0.1017
(3P) 350C/STW200-118 (2) 350C/STW200-118 3.139 2.000 0.7684 0.1242 9.161
275S137-97 2.750 1.375 0.5000 0.1017
362 (3P) 362C/STW200-97 (2) 362C/STW200-97 3.264 2.000 0.7234 0.1017 8.008
275S137-97 2.750 1.375 0.5000 0.1017
(3P) 362C/STW200-118 (2) 362C/STW200-118 3.264 2.000 0.7684 0.1242 9.266
275S137-97 2.750 1.375 0.5000 0.1017
(4P) 362C/STW200-97 (2) 362*C/STW200-97 3.029 2.000 0.7234 0.1017 9.969
275S137-97 2.750 1.375 0.5000 0.1017
326T162-97 3.264 1.625 N/A 0.1017
(4P) 362C/STW200-118 (2) 362*C/STW200-118 3.029 2.000 0.7684 0.1242 11.191
275S137-97 2.750 1.375 0.5000 0.1017
326T162-97 3.264 1.625 N/A 0.1017
400 (3P) 400C/STW200-97 (2) 400C/STW200-97 3.639 2.000 0.7234 0.1017 8.268
275S137-97 2.750 1.375 0.5000 0.1017
(3P) 400C/STW200-118 (2) 400C/STW200-118 3.639 2.000 0.7684 0.1242 9.583
275S137-97 2.750 1.375 0.5000 0.1017
(4P) 400C/STW200-97 (2) 400*C/STW200-97 3.404 2.000 0.7234 0.1017 10.358
275S137-97 2.750 1.375 0.5000 0.1017
364T162-97 3.639 1.625 N/A 0.1017
(4P) 400C/STW200-118 (2) 400*C/STW200-118 3.404 2.000 0.7684 0.1242 11.638
275S137-97 2.750 1.375 0.5000 0.1017
364T162-97 3.639 1.625 N/A 0.1017
550 (3P) 550C/STW250-97 (2) 550C/STW250-97 5.139 2.500 0.7234 0.1017 10.604
400S162-97 4.000 1.625 0.5000 0.1017
(3P) 550C/STW250-118 (2) 550C/STW250-118 5.139 2.500 0.7684 0.1242 12.298
400S162-97 4.000 1.625 0.5000 0.1017
600 (3P) 600C/STW250-97 (2) 600C/STW250-97 5.639 2.500 0.7234 0.1017 10.950
400S162-97 4.000 1.625 0.5000 0.1017
(3P) 600C/STW250-118 (2) 600C/STW250-118 5.639 2.500 0.7684 0.1242 12.720
400S162-97 4.000 1.625 0.5000 0.1017
(4P) 600C/STW250-97 (2) 600*C/STW250-97 5.404 2.500 0.7234 0.1017 15.703
(2) 564SGP225-97 5.639 2.250 N/A 0.1017
(4P) 600C/STW250-118 (2) 600*C/STW250-118 5.404 2.500 0.7684 0.1242 17.438
(2) 564SGP225-97 5.639 2.250 N/A 0.1017
(5P) 600C/STW250-97 (2) 600*C/STW250-97 5.404 2.500 0.7234 0.1017 18.297
(2) 564SGP225-97 5.639 2.250 N/A 0.1017
400S162-97 4.000 1.625 0.5000 0.1017
(5P) 600C/STW250-118 (2) 600*C/STW250-118 5.404 2.500 0.7684 0.1242 20.031
(2) 564SGP225-97 5.639 2.250 N/A 0.1017
400S162-97 4.000 1.625 0.5000 0.1017
800 (3P) 800C/STW250-97 (2) 800C/STW250-97 7.639 2.500 0.7234 0.1017 13.372
600S200-97 6.000 2.000 0.6250 0.1017
(3P) 800C/STW250-118 (2) 800C/STW250-118 7.639 2.500 0.7684 0.1242 15.446
600S200-97 6.000 2.000 0.6250 0.1017
(4P) 800C/STW250-97 (2) 800*C/STW250-97 7.404 2.500 0.7234 0.1017 18.472
(2) 764SGP225-97 7.639 2.250 N/A 0.1017
(4P) 800C/STW250-118 (2) 800*C/STW250-118 7.404 2.500 0.7684 0.1242 20.510
(2) 764SGP225-97 7.639 2.250 N/A 0.1017
(5P) 800C/STW250-97 (2) 800*C/STW250-97 7.404 2.500 0.7234 0.1017 22.104
(2) 764SGP225-97 7.639 2.250 N/A 0.1017
600S200-97 6.000 2.000 0.6250 0.1017
(5P) 800C/STW250-118 (2) 800*C/STW250-118 7.404 2.500 0.7684 0.1242 24.142
(2) 764SGP225-97 7.639 2.250 N/A 0.1017
600S200-97 6.000 2.000 0.6250 0.1017
* Overall Depth (D) varies from Single and Back-to-Back sections
TSN_StiffWall_Column_Nomenclature
StiffWall_Column_Shape_Key-Single
Single StiffWall® Section Properties
Section
(All 50 ksi)
Gross Properties Effective Properties 50 ksi
Area Ix Sx Rx Iy Ry Jx1000 Cw Ro Xo m ß Ix Sx
(in2) (in4) (in3) (in) (in4) (in) (in4) (in6) (in) (in) (in) (in4) (in3)
350C/STW200-33 0.304 0.489 0.312 1.268 0.185 0.781 0.121 0.607 2.524 -2.038 1.209 0.348 0.476 0.248
350C/STW200-43 0.395 0.629 0.401 1.262 0.239 0.777 0.268 0.787 2.515 -2.032 1.206 0.347 0.629 0.355
350C/STW200-54 0.494 0.777 0.495 1.255 0.295 0.774 0.527 0.982 2.506 -2.026 1.203 0.346 0.777 0.462
350C/STW200-68 0.618 0.960 0.612 1.246 0.366 0.769 1.048 1.226 2.493 -2.018 1.199 0.345 0.960 0.599
350C/STW200-97 0.872 1.315 0.838 1.228 0.502 0.759 3.006 1.718 2.467 -2.001 1.190 0.342 1.315 0.819
350C/STW200-118 1.054 1.555 0.991 1.215 0.595 0.752 5.402 2.065 2.448 -1.988 1.183 0.341 1.555 0.969
362C/STW200-33 0.309 0.535 0.328 1.317 0.188 0.781 0.123 0.644 2.531 -2.016 1.198 0.366 0.522 0.260
362C/STW200-43 0.401 0.689 0.422 1.311 0.242 0.778 0.272 0.834 2.523 -2.010 1.195 0.365 0.689 0.373
362C/STW200-54 0.501 0.852 0.522 1.304 0.300 0.774 0.535 1.040 2.513 -2.004 1.192 0.364 0.852 0.486
362C/STW200-68 0.627 1.053 0.645 1.295 0.371 0.769 1.063 1.299 2.501 -1.996 1.188 0.363 1.053 0.633
362C/STW200-97 0.885 1.443 0.884 1.277 0.510 0.760 3.050 1.817 2.475 -1.979 1.179 0.361 1.443 0.867
362C/STW200-118 1.069 1.709 1.047 1.264 0.605 0.752 5.481 2.183 2.455 -1.966 1.172 0.359 1.709 1.026
400C/STW200-33 0.322 0.689 0.379 1.464 0.197 0.782 0.128 0.764 2.562 -1.952 1.167 0.420 0.673 0.297
400C/STW200-43 0.418 0.887 0.488 1.458 0.253 0.779 0.283 0.989 2.553 -1.946 1.164 0.419 0.887 0.426
400C/STW200-54 0.522 1.099 0.604 1.451 0.314 0.775 0.557 1.232 2.544 -1.940 1.161 0.418 1.099 0.556
400C/STW200-68 0.654 1.360 0.748 1.442 0.388 0.770 1.108 1.536 2.531 -1.932 1.157 0.417 1.360 0.732
400C/STW200-97 0.923 1.871 1.028 1.424 0.534 0.761 3.181 2.143 2.505 -1.915 1.149 0.415 1.871 1.013
400C/STW200-118 1.116 2.220 1.22 1.411 0.633 0.753 5.719 2.569 2.485 -1.903 1.142 0.414 2.220 1.201
550C/STW250-43 0.530 2.281 0.888 2.074 0.491 0.962 0.360 3.069 3.175 -2.203 1.321 0.518 2.258 0.748
550C/STW250-54 0.663 2.835 1.103 2.067 0.609 0.958 0.708 3.821 3.165 -2.197 1.318 0.518 2.835 0.952
550C/STW250-68 0.832 3.527 1.373 2.059 0.757 0.954 1.410 4.763 3.153 -2.189 1.314 0.518 3.527 1.240
550C/STW250-97 1.177 4.902 1.908 2.041 1.050 0.944 4.058 6.644 3.127 -2.173 1.306 0.517 4.902 1.873
550C/STW250-118 1.426 5.864 2.282 2.028 1.253 0.937 7.308 7.966 3.108 -2.161 1.299 0.517 5.864 2.282
600C/STW250-43 0.553 2.825 1.002 2.261 0.508 0.958 0.375 3.671 3.253 -2.134 1.288 0.570 2.802 0.849
600C/STW250-54 0.692 3.514 1.246 2.254 0.630 0.955 0.739 4.568 3.244 -2.128 1.285 0.569 3.514 1.079
600C/STW250-68 0.868 4.376 1.552 2.245 0.783 0.950 1.471 5.692 3.231 -2.121 1.281 0.569 4.376 1.404
600C/STW250-97 1.228 6.093 2.161 2.228 1.086 0.941 4.233 7.932 3.205 -2.104 1.273 0.569 6.093 2.121
600C/STW250-118 1.488 7.298 2.588 2.215 1.297 0.934 7.626 9.503 3.186 -2.092 1.266 0.569 7.298 2.588
800C/STW250-43 0.643 5.723 1.498 2.983 0.563 0.936 0.436 6.814 3.661 -1.904 1.176 0.729 5.709 1.169
800C/STW250-54 0.805 7.131 1.867 2.976 0.700 0.932 0.860 8.472 3.651 -1.898 1.173 0.730 7.131 1.627
800C/STW250-68 1.011 8.900 2.330 2.968 0.870 0.928 1.712 10.544 3.639 -1.890 1.169 0.730 8.900 2.121
800C/STW250-97 1.431 12.452 3.260 2.950 1.207 0.918 4.934 14.662 3.613 -1.873 1.160 0.731 12.452 3.199
800C/STW250-118 1.736 14.968 3.919 2.936 1.442 0.911 8.897 17.54 3.594 -1.861 1.153 0.732 14.968 3.919
Important Notes
  1. Section properties and capacities are calculated in accordance with AISI-S100-12.
  2. Tabulated gross properties are based on the full-unreduced cross section of the studs, away from punchouts.
  3. Effective section properties incorporate the strength increase from the cold-work of forming as applicable per AISI S100-12 Sec. A7.2.
  4. Net effective section properties are calculated at a cross section through the punchout.
  5. For deflection calculations, use the effective moment of inertia.
  6. The effective moment of inertia for deflection is calculated at a stress which results in a section modulus such that the stress times the section modulus at that stress is equal to the allowable moment.
  7. The StiffWall Column must be used with the StiffWall Boot. Standard (S) sections will not fit inside the StiffWall Boot or Strap Track.
Single StiffWall Column Axial Load Table Notes:
  1. Allowable loads are based on specified weak axis and torsional bracing for axial load calculation.
  2. Sections are punched with a standard punch-out 1.5" wide located along the centerline of the web 24" o.c.
  3. Allowable loads are based on a punched section for axial load calculation.
  4. The allowable axial strength for distortional buckling is based on an assumed kΦ = 0.
  5. Weak axis and torsional bracing should have sufficient strength and stiffness to resist the axial load.
  6. Strength increase due to cold work of forming is incorporated in calculating allowable loads as per AISI S100-12 Sec. A7.2.
  7. The StiffWall Column must be used with the StiffWall Boot. Standard (S) sections will not fit inside the StiffWall Boot or Strap Track.
  8. StiffWall Columns are delivered to the job site with Boots pre-attached at the top and bottom for fast installation.
TSN_SW_Column_Shape_Key_Horizontal
StiffWall® Axial Load: Single Section
Section
(All 50 ksi)
Maximum Unbraced Length = 48" Maximum Unbraced Length = 60" Maximum Unbraced Length = Full Height
SW Column Height (ft) SW Column Height (ft) SW Column Height (ft)
9 10 12 14 9 10 12 14 9 10 12 14
350C/STW200-33 2.64 2.41 1.95 1.57 2.12 1.96 1.64 1.37 0.91 0.75 0.54 0.42
350C/STW200-43 3.56 3.18 2.53 2.03 2.80 2.57 2.14 1.78 1.25 1.04 0.76 0.60
350C/STW200-54 4.47 3.98 3.15 2.52 3.55 3.25 2.70 2.23 1.66 1.40 1.05 0.84
350C/STW200-68 5.63 5.00 3.95 3.15 4.55 4.14 3.41 2.81 2.29 1.95 1.51 1.23
350C/STW200-97 8.08 7.14 5.57 4.40 6.75 6.09 4.94 4.02 3.96 3.45 2.76 2.08
350C/STW200-118 9.91 8.72 6.74 5.30 8.51 7.62 6.09 4.91 5.53 4.83 3.35 2.46
362C/STW200-33 2.78 2.56 2.09 1.71 2.26 2.09 1.77 1.49 0.97 0.80 0.57 0.44
362C/STW200-43 3.83 3.45 2.75 2.21 3.02 2.78 2.33 1.94 1.32 1.10 0.81 0.63
362C/STW200-54 4.81 4.32 3.44 2.76 3.83 3.51 2.93 2.43 1.76 1.48 1.11 0.89
362C/STW200-68 6.06 5.44 4.30 3.44 4.90 4.47 3.71 3.06 2.42 2.06 1.59 1.30
362C/STW200-97 8.69 7.76 6.08 4.82 7.28 6.59 5.37 4.38 4.18 3.64 2.89 2.12
362C/STW200-118 10.66 9.49 7.37 5.80 9.17 8.24 6.63 5.35 5.84 4.93 3.42 2.51
400C/STW200-33 3.15 2.95 2.53 2.09 2.62 2.47 2.13 1.82 1.14 0.94 0.68 0.52
400C/STW200-43 4.44 4.12 3.42 2.81 3.61 3.36 2.89 2.46 1.56 1.29 0.94 0.73
400C/STW200-54 5.75 5.33 4.38 3.53 4.70 4.35 3.68 3.08 2.06 1.73 1.29 1.03
400C/STW200-68 7.33 6.73 5.49 4.42 6.01 5.54 4.66 3.89 2.82 2.39 1.84 1.50
400C/STW200-97 10.48 9.60 7.77 6.20 8.88 8.16 6.76 5.57 4.83 4.21 3.05 2.24
400C/STW200-118 12.83 11.73 9.43 7.49 11.14 10.23 8.36 6.83 6.42 5.20 3.61 2.65
550C/STW250-43 6.34 6.20 5.84 5.39 5.76 5.64 5.30 4.89 2.84 2.37 1.74 1.35
550C/STW250-54 8.32 8.14 7.83 7.30 7.76 7.61 7.18 6.53 3.80 3.19 2.37 1.85
550C/STW250-68 11.94 11.55 10.62 9.57 10.51 10.20 9.46 8.59 5.19 4.38 3.25 2.54
550C/STW250-97 18.21 17.59 16.15 14.50 16.18 15.68 14.50 13.12 8.40 7.11 5.43 4.41
550C/STW250-118 23.00 22.19 20.19 17.89 20.47 19.76 18.09 16.17 11.16 9.59 7.45 5.48
600C/STW250-43 6.59 6.46 6.17 5.80 6.03 5.93 5.69 5.34 3.11 2.60 1.91 1.48
600C/STW250-54 8.66 8.49 8.14 7.81 8.02 7.94 7.68 7.25 4.17 3.50 2.61 2.05
600C/STW250-68 12.38 12.18 11.48 10.55 11.20 10.95 10.32 9.57 5.70 4.81 3.63 2.87
600C/STW250-97 19.32 18.81 17.57 16.12 17.32 16.91 15.93 14.72 9.48 8.02 6.09 4.78
600C/STW250-118 24.55 23.88 22.27 20.38 22.14 21.60 20.30 18.71 12.54 10.73 7.76 5.70
800C/STW250-43 7.13 7.08 6.94 6.74 6.64 6.60 6.49 6.35 3.93 3.27 2.40 1.86
800C/STW250-54 9.44 9.37 9.17 8.90 8.76 8.71 8.56 8.36 5.25 4.40 3.27 2.56
800C/STW250-68 13.47 13.37 13.10 12.74 12.59 12.52 12.34 12.03 7.13 6.02 4.51 3.46
800C/STW250-97 21.88 21.65 21.03 20.20 19.95 19.78 19.34 18.73 11.40 9.51 6.95 5.32
800C/STW250-118 28.08 27.78 26.98 25.90 25.71 25.49 24.91 24.11 14.46 12.06 8.77 6.47
 
 
Back-to-Back StiffWall Column Axial Load Table Notes:
  1. Allowable loads are based on specified weak axis and torsional bracing for axial load calculation.
  2. Sections are punched with a standard punch-out 1.5" wide located along the centerline of the web 24" o.c.
  3. Allowable loads are based on a punched section for axial load calculation.
  4. The allowable axial strength for distortional buckling is based on an assumed kΦ = 0.
  5. Weak axis and torsional bracing should have sufficient strength and stiffness to resist the axial load.
  6. Strength increase due to cold work of forming is incorporated in calculating allowable loads as per AISI S100-12 Sec. A7.2.
  7. Allowable loads for double sections are based on maximum attachment interval of 24" o.c. via weld, bolts, or screws.
  8. The StiffWall Column must be used with the StiffWall Boot. Standard (S) sections will not fit inside the StiffWall Boot or Strap Track.
  9. StiffWall Columns are delivered to the job site with Boots pre-attached at the top and bottom for fast installation.
TSN_StiffWall_Column_Shape_Key-Double
StiffWall® Axial Load: Back-to-Back Section (Fastener Spacing = 24 in)
Section
(Back-to-Back)

(All 50 ksi)
Maximum Unbraced Length = 48" Maximum Unbraced Length = 60" Maximum Unbraced Length = Full Height
SW Column Height (ft) SW Column Height (ft) SW Column Height (ft)
9 10 12 14 9 10 12 14 9 10 12 14
(2) 350C/STW200-33 7.40 6.71 5.34 4.06 7.40 6.71 5.34 4.06 4.51 3.76 2.73 2.10
(2) 350C/STW200-43 10.62 9.45 7.13 5.24 10.62 9.45 7.13 5.24 6.28 5.25 3.90 3.09
(2) 350C/STW200-54 13.33 11.77 8.80 6.47 13.33 11.77 8.80 6.47 8.48 7.18 5.50 4.48
(2) 350C/STW200-68 16.56 14.59 10.86 7.98 16.56 14.59 10.86 7.98 11.83 10.27 8.15 6.50
(2) 350C/STW200-97 22.92 20.11 14.84 10.90 22.92 20.11 14.84 10.90 19.70 16.97 12.21 9.11
(2) 350C/STW200-118 27.32 23.91 17.52 12.87 27.32 23.91 17.52 12.87 23.71 20.42 14.69 10.97
(2) 362C/STW200-33 7.65 7.00 5.68 4.40 7.65 7.00 5.68 4.40 4.56 3.80 2.78 2.14
(2) 362C/STW200-43 11.03 9.95 7.75 5.75 11.03 9.95 7.75 5.75 6.40 5.34 3.96 3.13
(2) 362C/STW200-54 14.11 12.57 9.62 7.11 14.11 12.57 9.62 7.11 8.62 7.29 5.56 4.52
(2) 362C/STW200-68 17.54 15.60 11.89 8.78 17.54 15.60 11.89 8.78 11.98 10.38 8.20 6.52
(2) 362C/STW200-97 24.33 21.56 16.31 12.01 24.33 21.56 16.31 12.01 19.86 17.07 12.25 9.15
(2) 362C/STW200-118 29.04 25.68 19.31 14.19 29.04 25.68 19.31 14.19 23.91 20.55 14.75 11.01
(2) 400C/STW200-33 8.29 7.72 6.53 5.35 8.29 7.72 6.53 5.35 4.66 3.89 2.87 2.24
(2) 400C/STW200-43 12.04 11.18 9.21 7.27 12.04 11.18 9.21 7.27 6.60 5.56 4.13 3.24
(2) 400C/STW200-54 15.77 14.45 11.81 9.25 15.77 14.45 11.81 9.25 9.00 7.58 5.73 4.62
(2) 400C/STW200-68 20.30 18.48 14.84 11.44 20.30 18.48 14.84 11.44 12.40 10.67 8.34 6.59
(2) 400C/STW200-97 28.30 25.68 20.51 15.70 28.30 25.68 20.51 15.70 20.33 17.36 12.39 9.24
(2) 400C/STW200-118 33.90 30.71 24.43 18.60 33.90 30.71 24.43 18.60 24.48 20.90 14.92 11.13
(2) 550C/STW250-43 14.58 14.16 13.22 12.19 13.93 13.93 13.22 12.19 9.37 8.02 5.90 4.59
(2) 550C/STW250-54 19.21 18.63 17.33 16.08 18.37 18.37 17.33 16.08 12.67 10.82 8.08 6.37
(2) 550C/STW250-68 27.22 26.38 24.66 22.40 26.12 26.12 24.66 22.40 17.18 14.93 11.35 9.12
(2) 550C/STW250-97 43.71 41.89 37.94 33.76 41.86 41.86 37.94 33.76 28.16 25.24 20.00 16.44
(2) 550C/STW250-118 54.95 52.61 47.56 42.06 53.18 52.61 47.56 42.06 37.07 33.67 27.79 20.75
(2) 600C/STW250-43 14.76 14.55 13.74 12.84 14.02 14.02 13.74 12.84 9.50 8.17 6.00 4.67
(2) 600C/STW250-54 19.48 19.20 18.08 16.83 18.50 18.50 18.08 16.83 12.85 11.00 8.19 6.45
(2) 600C/STW250-68 27.64 27.25 25.68 24.12 26.35 26.35 25.68 24.12 17.41 15.12 11.47 9.19
(2) 600C/STW250-97 44.77 43.92 40.46 36.72 42.44 42.44 40.46 36.72 28.50 25.48 20.31 16.70
(2) 600C/STW250-118 56.56 55.51 51.08 46.29 54.13 54.13 51.08 46.29 38.02 34.65 28.08 20.91
(2) 800C/STW250-43 14.77 14.77 14.77 14.41 14.20 14.20 14.20 14.20 9.77 8.45 6.19 4.79
(2) 800C/STW250-54 19.55 19.55 19.55 19.06 18.80 18.80 18.80 18.80 13.21 11.31 8.38 6.56
(2) 800C/STW250-68 27.86 27.86 27.86 27.16 26.85 26.85 26.85 26.85 17.80 15.42 11.59 9.21
(2) 800C/STW250-97 45.50 45.50 45.50 44.07 43.64 43.64 43.64 43.64 28.93 25.60 19.98 16.29
(2) 800C/STW250-118 58.13 58.13 58.13 56.36 56.12 56.12 56.12 56.12 38.52 34.63 26.92 20.83
 
 
Built-up StiffWall Column Axial Load Table Notes:
  1. Allowable loads are based on specified weak axis and torsional bracing for axial load calculation.
  2. Sections are punched with a standard punch-out 1.5" wide located along the centerline of the web 24" o.c.
  3. Allowable loads are based on a punched section for axial load calculation.
  4. The allowable axial strength for distortional buckling is based on an assumed kΦ = 0.
  5. Weak axis and torsional bracing should have sufficient stiffness and strength to resist the axial load.
  6. Strength increase due to cold work of forming is incorporated in calculating allowable loads as per AISI Specification Sec. A7.2.
  7. The StiffWall Column must be used with the StiffWall Boot. Standard (S) Sections will not fit inside the StiffWall Boot or Strap Track.
  8. StiffWall Columns are delivered to the job site with Boots pre-attached at the top and bottom for fast installation.
  9. Allowable loads for built-up sections are based on maximum attachment interval of 24" o.c. via weld, bolts, or screws.
Built-up_StiffWall_Column_Shape_Key.png
Built-up_StiffWall_Column_Shape_Profile_3pc.png
Built-up_StiffWall_Column_Shape_Profile_4pc_3.62-4in.png
Built-up_StiffWall_Column_Shape_Profile_4pc_6-8in.png
Built-up_StiffWall_Column_Shape_Profile_5pc.png
StiffWall® Axial Load: Built-up Section (Fastener Spacing = 24 in)
Section
(Back-to-Back)

(All 50 ksi)
Thickness
(mils
)
Maximum Unbraced Length = 48" Maximum Unbraced Length = 60" Maximum Unbraced Length = Full Height
SW Column Height (ft) SW Column Height (ft) SW Column Height (ft)
9 10 12 14 9 10 12 14 9 10 12 14
(3P) 350C/STW200-97 97 (C/STW), 97(S) 28.69 24.96 18.07 13.27 28.69 24.96 18.07 13.27 22.81 19.09 13.55 10.09
(3P) 350C/STW200-118 118 (C/STW), 97(S) 33.08 28.74 20.76 15.25 33.08 28.74 20.76 15.25 26.98 22.69 16.13 12.02
(3P) 362C/STW200-97 97 (C/STW), 97(S) 30.18 26.48 19.53 14.35 30.18 26.48 19.53 14.35 22.94 19.16 13.6 10.13
(3P) 362C/STW200-118 118 (C/STW), 97(S) 34.88 30.58 22.51 16.54 34.88 30.58 22.51 16.54 27.14 22.78 16.19 12.06
(4P) 362C/STW200-97 97 (C/STW), 97(S), 97(T) 35.36 30.72 22.18 16.29 35.36 30.72 22.18 16.29 27.77 25.64 21.96 16.29
(4P) 362C/STW200-118 118 (C/STW), 97(S), 97(T) 39.49 34.24 24.63 18.09 39.49 34.24 24.63 18.09 35.94 33.46 24.61 18.09
(3P) 400C/STW200-97 97 (C/STW), 97(S) 34.48 30.93 24.05 17.95 34.48 30.93 24.05 17.95 23.3 19.36 13.73 10.22
(3P) 400C/STW200-118 118 (C/STW), 97(S) 40.06 35.94 27.95 20.85 40.06 35.94 27.95 20.85 27.6 23.03 16.36 12.18
(4P) 400C/STW200-97 97 (C/STW), 97(S), 97(T) 41.18 36.75 28.1 20.77 41.18 36.75 28.1 20.77 28.26 25.82 22.39 17.1
(4P) 400C/STW200-118 118 (C/STW), 97(S), 97(T) 46.23 41.2 31.44 23.21 46.23 41.2 31.44 23.21 36.57 34.26 25.57 19.12
(3P) 550C/STW250-97 97 (C/STW), 97(S) 56.31 53.63 47.88 41.88 54.17 53.63 47.88 41.88 35.83 32.11 25.39 18.87
(3P) 550C/STW250-118 118 (C/STW), 97(S) 67.5 64.29 57.42 49.94 65.56 64.29 57.42 49.94 44.99 40.86 30.31 22.54
(3P) 600C/STW250-97 97 (C/STW), 97(S) 58.51 56.13 50.98 45.51 54.89 54.89 50.98 45.51 36.24 32.39 25.43 19
(3P) 600C/STW250-118 118 (C/STW), 97(S) 70.5 67.67 61.53 54.98 66.65 66.65 61.53 54.98 46.07 41.75 30.53 22.69
(4P) 600C/STW250-97 97 (C/STW), 97(SGT) 82.23 79.29 72.57 65.37 74.96 79.29 72.57 65.37 69.98 65.46 56.08 46.68
(4P) 600C/STW250-118 118 (C/STW), 97(SGT) 93.76 90.5 82.76 74.44 85.31 90.5 82.76 74.44 79.04 73.72 62.62 51.13
(5P) 600C/STW250-97 97 (C/STW), 97(S), 97(SGT) 95.3 91.4 82.98 74.03 95.3 91.4 82.98 74.03 78.91 73.13 61.3 49.73
(5P) 600C/STW250-118 118 (C/STW), 97(S), 97(SGT) 106.95 102.57 93.1 83.02 106.95 102.57 93.1 83.02 87.79 81.18 67.43 53.81
(3P) 800C/STW250-97 97 (C/STW), 97(S) 63.53 63.53 63.53 60.04 60.1 60.1 60.1 60.04 39.27 34.69 26.52 20.36
(3P) 800C/STW250-118 118 (C/STW), 97(S) 76.11 76.11 76.11 72.29 72.59 72.59 72.59 72.29 49.03 43.44 32.49 24.95
(4P) 800C/STW250-97 97 (C/STW), 97(SGT) 92.13 92.13 92.13 87.36 83.63 83.63 83.63 87.36 79.69 74.74 64.44 54.09
(4P) 800C/STW250-118 118 (C/STW), 97(SGT) 104.58 104.58 104.58 99.41 94.84 94.84 94.84 99.41 89.51 83.72 71.7 59.7
(5P) 800C/STW250-97 97 (C/STW), 97(S), 97(SGT) 110.17 110.17 109.83 103.11 100.04 100.04 109.83 103.11 92.16 85.76 72.62 59.67
(5P) 800C/STW250-118 118 (C/STW), 97(S), 97(SGT) 122.57 122.57 122.57 115.14 111.19 111.19 111.19 115.14 101.78 94.52 79.64 65.03
TSN_SW_Column_Boot_Pallet

StiffWall Columns come with StiffWall Boots pre-assembled. When ordering columns, determine the height of the bearing wall. TSN will size the StiffWall Column/Boot Assembly factoring in the dimensions of the boots at top and bottom. Each column is shipped with the boots pre-attached at the top and bottom as shown in the image to the right.

The added value of the pre-installed boots minimizes tolerance issues during erection. Simply specify the clear span of the bearing wall system and TSN will ship the Column/Boot assembly to meet the given wall height at a tolerance of +0/-1/8".

Please refer to the StiffWall product page for full system design and order information. Contact TSN technical support for design recommendations.

Nomenclature

StiffWall/TSN_SW_Column-Boot_Assy_Nomenclature

TSN's Product Catalogs are an essential resource for the design of cold formed steel. Developed by Engineers, the catalogs contain design data for members connectors, and fasteners.

StiffWall® Column and the rest of TSN's StiffWall Shear Wall System can be found in the following Catalogs:

 
 
For a full list of our product catalogs, specification sections, inspection checklists, and research reports please click here.