1. Home
  2. Light Steel Framing Products
  3. Load Bearing Members
  4. SigmaTrak

SigmaTrak®

SigmaTrak eliminates field issues typically seen with standard “T Section” tracks where the studs bear directly on the corner radius of the track, creating gaps between the stud and track, and the potential for building settling and damage over time.

It’s unique shape is designed to allow a stud to seat fully within the track, providing full bearing at the top and bottom structural tracks. Load bearing studs must be fully seated within the top and bottom tracks according to design standards.

Features
  • Track web is oversized to allow the stud to seat fully in the track
  • Eliminates the gap between the stud and the track as a result of bearing on corner radii
  • Faster assembly than with standard track (no forcing/squeezing stud into bearing on track radii)
  • Manufactured from traceable millcertified steel
  • Manufacturing tolerances based on ASTM C955-06
Order Information
SigmaTrak Nomenclature

Available Sections:

Depths: 350, 362, 400, 550, 600, and 800
Flange Widths: 150 and 200
Mil Thicknesses: 33, 43, 54, 68, and 97

Material Composition
ASTM A1003/A1003M or ASTM A653/A653M, G-60 (Z180) minimum hot-dipped galvanized coating; or equivalent. Grade 50 (340), 50ksi (340 MPa) minimum yield strength, 65ksi (450 MPa) minimum tensile strength or 33ksi (230MPa) minimum yield strength, 45ksi (310 MPa) minimum tensile strength.
Catalogs

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. SigmaTrak® can be found in the following Catalogs:

TSN Cold-Formed Steel Framing Loadbearing Order Catalog

TSN Loadbearing Technical Catalog

TSN Cold-Formed Steel Framing Loadbearing Technical Catalog

TSN Loadbearing Order Catalog

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

SigmaTrack - Loadbearing wall track
Profile view of SigmaTrack, a loadbearing runner track
SigmaTrack Side - Loadbearing wall track

SigmaTrak® Downloads

SigmaTrak Tech Sheet

Tech Sheet

Specification

SigmaTrak Detail Drawing

Detail DWG

SigmaTrak BIM Object

BIM Object

SigmaTrak® Applications

Load bearing walls are designed to fully seat within the top and bottom tracks to ensure there is no movement or settling of the wall. Without attention paid to this during installation, Standard (T) Section runner tracks can be installed with a gap between the track and the stud, causing the wall to move and possible failure of stud/track connections.

Standard Runner Track vs. SigmaTrack

Standard Track

Due to the shape of the inside corner radius in Standard (T) Section tracks, “full” bearing within the track is prevented unless the wall panel is compressed.

Standard Runner Track vs. SigmaTrack - No Gap

SigmaTrak

SigmaTrak’s unique shape allows full bearing of the stud within the track.

Allowable Loads

SigmaTrak® Section Properties
Section (All 50 ksi) Design
Thickness		 Gross Properties Effective Properties Torsional Properties
Area Weight Ix Sx Rx Iy Ry Ixe Sxe Ma Vag Iye1 Mya1 Iye2 Mya2 Jx1000 Cw Xo m Ro ß
(in) (in2) (lb/ft) (in4) (in3) (in) (in4) (in) (in4) (in3) (in-k) (lb) (in4) (in-k) (in4) (in-k) (in4) (in6) (in) (in) (in)
350SGT150-33 0.0346 0.229 0.778 0.498 0.264 1.476 0.050 0.467 0.409 0.172 5.158 1,053 0.050 0.116 0.047 1.218 0.091 0.120 -0.867 0.533 1.774 0.761
350SGT150-43 0.0451 0.298 1.013 0.651 0.343 1.479 0.064 0.465 0.566 0.243 7.263 2,141 0.064 0.275 0.064 1.634 0.202 0.156 -0.862 0.531 1.774 0.764
350SGT150-54 0.0566 0.373 1.270 0.819 0.429 1.482 0.080 0.463 0.747 0.327 9.804 3,372 0.080 0.610 0.080 2.084 0.399 0.194 -0.857 0.528 1.773 0.766
350SGT150-68 0.0713 0.470 1.599 1.036 0.538 1.485 0.099 0.460 0.988 0.446 13.355 4,679 0.099 1.381 0.099 2.613 0.796 0.243 -0.851 0.525 1.772 0.770
350SGT150-97 0.1017 0.669 2.276 1.489 0.761 1.492 0.138 0.454 1.489 0.717 21.457 6,674 0.138 3.657 0.138 3.657 2.306 0.342 -0.838 0.518 1.771 0.776
350SGT150-118 0.1242 0.814 2.771 1.825 0.922 1.497 0.165 0.450 1.825 0.922 27.617 8,138 0.165 4.395 0.165 4.395 4.173 0.412 -0.828 0.513 1.769 0.781
350SGT200-33 0.0346 0.263 0.895 0.619 0.328 1.534 0.109 0.645 0.470 0.172 5.144 1,053 0.109 0.092 0.100 2.054 0.105 0.262 -1.285 0.768 2.102 0.627
350SGT200-43 0.0451 0.343 1.166 0.810 0.426 1.537 0.142 0.643 0.649 0.256 7.674 2,141 0.142 0.223 0.138 2.775 0.232 0.341 -1.280 0.765 2.101 0.629
350SGT200-54 0.0566 0.430 1.463 1.020 0.534 1.540 0.176 0.641 0.862 0.348 10.412 3,372 0.176 0.504 0.176 3.564 0.459 0.427 -1.275 0.762 2.100 0.631
350SGT200-68 0.0713 0.541 1.841 1.291 0.670 1.545 0.220 0.638 1.151 0.478 14.297 4,679 0.220 1.182 0.220 4.530 0.917 0.536 -1.268 0.759 2.098 0.635
350SGT200-97 0.1017 0.770 2.622 1.858 0.950 1.553 0.308 0.632 1.788 0.784 23.474 6,674 0.308 4.456 0.308 6.371 2.656 0.758 -1.254 0.752 2.094 0.642
350SGT200-118 0.1242 0.938 3.193 2.281 1.153 1.559 0.370 0.628 2.277 1.033 30.936 8,138 0.370 7.688 0.370 7.688 4.809 0.920 -1.243 0.746 2.091 0.646
362SGT150-33 0.0346 0.233 0.792 0.537 0.275 1.519 0.050 0.465 0.442 0.181 5.424 1,017 0.050 0.117 0.047 1.219 0.093 0.130 -0.855 0.528 1.804 0.775
362SGT150-43 0.0451 0.303 1.032 0.702 0.358 1.521 0.065 0.463 0.611 0.255 7.625 2,141 0.065 0.276 0.064 1.637 0.206 0.168 -0.851 0.526 1.803 0.778
362SGT150-54 0.0566 0.380 1.294 0.884 0.448 1.524 0.081 0.461 0.806 0.343 10.279 3,372 0.081 0.608 0.081 2.088 0.406 0.210 -0.846 0.523 1.803 0.780
362SGT150-68 0.0713 0.479 1.629 1.117 0.562 1.528 0.100 0.458 1.066 0.467 13.983 4,846 0.100 1.372 0.100 2.624 0.811 0.263 -0.840 0.520 1.802 0.783
362SGT150-97 0.1017 0.681 2.319 1.605 0.795 1.535 0.139 0.452 1.605 0.749 22.424 6,912 0.139 3.671 0.139 3.671 2.349 0.369 -0.827 0.513 1.801 0.789
362SGT150-118 0.1242 0.830 2.824 1.967 0.963 1.540 0.166 0.448 1.967 0.963 28.844 8,428 0.166 4.412 0.166 4.412 4.252 0.444 -0.817 0.508 1.800 0.794
362SGT200-33 0.0346 0.267 0.910 0.667 0.342 1.579 0.111 0.643 0.508 0.178 5.321 1,017 0.111 0.092 0.100 2.057 0.107 0.283 -1.270 0.761 2.126 0.643
362SGT200-43 0.0451 0.348 1.186 0.872 0.444 1.582 0.143 0.641 0.699 0.269 8.057 2,141 0.143 0.223 0.139 2.779 0.236 0.368 -1.266 0.759 2.125 0.645
362SGT200-54 0.0566 0.437 1.487 1.098 0.556 1.585 0.178 0.639 0.929 0.365 10.915 3,372 0.178 0.503 0.178 3.572 0.467 0.461 -1.260 0.756 2.123 0.648
362SGT200-68 0.0713 0.550 1.872 1.389 0.698 1.589 0.222 0.636 1.239 0.500 14.966 4,846 0.222 1.177 0.222 4.551 0.932 0.578 -1.253 0.753 2.122 0.651
362SGT200-97 0.1017 0.783 2.665 1.999 0.990 1.598 0.311 0.630 1.923 0.819 24.519 6,912 0.311 4.412 0.311 6.400 2.700 0.818 -1.239 0.746 2.118 0.658
362SGT200-118 0.1242 0.954 3.246 2.453 1.201 1.604 0.374 0.626 2.448 1.078 32.279 8,428 0.374 7.723 0.374 7.723 4.888 0.992 -1.229 0.740 2.115 0.662
400SGT150-33 0.0346 0.246 0.837 0.666 0.311 1.646 0.052 0.458 0.554 0.198 5.932 922 0.052 0.118 0.047 1.223 0.098 0.161 -0.823 0.513 1.896 0.812
400SGT150-43 0.0451 0.320 1.090 0.870 0.405 1.648 0.067 0.456 0.759 0.292 8.756 2,041 0.067 0.279 0.065 1.644 0.217 0.209 -0.818 0.511 1.896 0.814
400SGT150-54 0.0566 0.402 1.367 1.094 0.506 1.651 0.083 0.454 0.999 0.393 11.759 3,372 0.083 0.602 0.083 2.100 0.429 0.261 -0.814 0.508 1.896 0.816
400SGT150-68 0.0713 0.505 1.720 1.383 0.635 1.654 0.103 0.451 1.320 0.532 15.936 5,348 0.103 1.347 0.103 2.652 0.856 0.326 -0.807 0.505 1.895 0.818
400SGT150-97 0.1017 0.720 2.449 1.984 0.899 1.661 0.143 0.445 1.984 0.849 25.422 7,628 0.143 3.710 0.143 3.710 2.481 0.458 -0.795 0.498 1.894 0.824
400SGT150-118 0.1242 0.876 2.982 2.430 1.090 1.665 0.171 0.441 2.430 1.090 32.639 9,300 0.171 4.459 0.171 4.459 4.491 0.551 -0.786 0.493 1.894 0.828
400SGT200-33 0.0346 0.280 0.954 0.822 0.384 1.712 0.114 0.637 0.634 0.195 5.849 922 0.114 0.093 0.101 2.063 0.112 0.352 -1.229 0.744 2.201 0.688
400SGT200-43 0.0451 0.365 1.243 1.074 0.500 1.715 0.147 0.635 0.866 0.309 9.251 2,041 0.147 0.225 0.141 2.791 0.248 0.457 -1.224 0.741 2.200 0.690
400SGT200-54 0.0566 0.458 1.559 1.352 0.625 1.718 0.183 0.633 1.147 0.417 12.483 3,372 0.183 0.501 0.183 3.592 0.489 0.572 -1.219 0.739 2.199 0.693
400SGT200-68 0.0713 0.577 1.963 1.709 0.785 1.722 0.229 0.630 1.527 0.569 17.044 5,348 0.229 1.165 0.229 4.600 0.977 0.717 -1.212 0.735 2.198 0.696
400SGT200-97 0.1017 0.821 2.795 2.457 1.113 1.730 0.320 0.624 2.364 0.927 27.754 7,628 0.320 4.295 0.320 6.481 2.832 1.014 -1.199 0.728 2.195 0.702
400SGT200-118 0.1242 1.000 3.404 3.012 1.351 1.735 0.384 0.620 3.005 1.217 36.426 9,300 0.384 7.820 0.384 7.820 5.126 1.228 -1.189 0.723 2.193 0.706
550SGT150-33 0.0346 0.298 1.013 1.363 0.472 2.139 0.056 0.433 1.175 0.265 7.940 670 0.056 0.121 0.049 1.233 0.119 0.330 -0.715 0.460 2.297 0.903
550SGT150-43 0.0451 0.388 1.320 1.778 0.613 2.141 0.072 0.431 1.576 0.451 13.491 1,484 0.072 0.287 0.068 1.662 0.263 0.427 -0.711 0.457 2.297 0.904
550SGT150-54 0.0566 0.486 1.656 2.235 0.767 2.143 0.089 0.428 2.055 0.618 18.491 2,934 0.089 0.597 0.088 2.130 0.519 0.532 -0.707 0.455 2.297 0.905
550SGT150-68 0.0713 0.612 2.084 2.820 0.964 2.146 0.111 0.426 2.699 0.827 24.765 5,350 0.111 1.281 0.111 2.715 1.038 0.664 -0.702 0.452 2.297 0.907
550SGT150-97 0.1017 0.872 2.968 4.035 1.365 2.151 0.154 0.420 4.035 1.298 38.851 10,488 0.154 3.827 0.154 3.827 3.007 0.929 -0.691 0.445 2.298 0.910
550SGT150-118 0.1242 1.062 3.615 4.932 1.655 2.155 0.184 0.416 4.932 1.655 49.564 12,788 0.184 4.598 0.184 4.598 5.444 1.116 -0.683 0.441 2.298 0.912
550SGT200-33 0.0346 0.332 1.131 1.648 0.570 2.227 0.124 0.611 1.323 0.266 7.955 670 0.124 0.097 0.104 2.079 0.133 0.717 -1.089 0.680 2.553 0.818
550SGT200-43 0.0451 0.433 1.473 2.152 0.742 2.229 0.161 0.609 1.783 0.445 13.324 1,484 0.161 0.233 0.146 2.821 0.294 0.931 -1.085 0.677 2.553 0.819
550SGT200-54 0.0566 0.543 1.848 2.705 0.929 2.232 0.200 0.607 2.321 0.654 19.589 2,934 0.200 0.498 0.193 3.644 0.580 1.163 -1.080 0.675 2.553 0.821
550SGT200-68 0.0713 0.684 2.327 3.415 1.167 2.235 0.249 0.604 3.071 0.882 26.403 5,350 0.249 1.130 0.249 4.688 1.159 1.457 -1.074 0.672 2.552 0.823
550SGT200-97 0.1017 0.974 3.314 4.894 1.655 2.242 0.349 0.598 4.713 1.408 42.161 10,488 0.349 3.983 0.349 6.723 3.357 2.053 -1.062 0.665 2.552 0.827
550SGT200-118 0.1242 1.186 4.037 5.987 2.010 2.247 0.418 0.594 5.963 1.830 54.787 12,788 0.418 7.608 0.418 8.110 6.080 2.481 -1.053 0.660 2.551 0.830
600SGT150-33 0.0346 0.315 1.072 1.666 0.531 2.300 0.057 0.425 1.391 0.273 8.187 614 0.057 0.122 0.049 1.235 0.126 0.401 -0.686 0.444 2.437 0.921
600SGT150-43 0.0451 0.410 1.397 2.174 0.690 2.302 0.073 0.423 1.936 0.431 12.915 1,361 0.073 0.289 0.068 1.666 0.278 0.519 -0.682 0.442 2.438 0.922
600SGT150-54 0.0566 0.515 1.752 2.732 0.864 2.304 0.091 0.420 2.543 0.630 18.872 2,690 0.091 0.601 0.089 2.137 0.550 0.647 -0.678 0.440 2.438 0.923
600SGT150-68 0.0713 0.648 2.205 3.446 1.085 2.306 0.113 0.418 3.310 0.911 27.263 5,350 0.113 1.266 0.113 2.726 1.098 0.807 -0.673 0.437 2.438 0.924
600SGT150-97 0.1017 0.923 3.141 4.928 1.537 2.311 0.157 0.412 4.928 1.464 43.837 10,885 0.157 3.802 0.157 3.856 3.182 1.128 -0.662 0.430 2.439 0.926
600SGT150-118 0.1242 1.124 3.826 6.021 1.865 2.314 0.187 0.408 6.021 1.865 55.825 13,950 0.187 4.632 0.187 4.632 5.762 1.355 -0.654 0.426 2.439 0.928
600SGT200-33 0.0346 0.350 1.190 2.004 0.638 2.394 0.127 0.602 1.626 0.289 8.659 614 0.127 0.097 0.104 2.082 0.140 0.872 -1.050 0.661 2.683 0.847
600SGT200-43 0.0451 0.456 1.550 2.615 0.830 2.396 0.164 0.600 2.190 0.482 14.434 1,361 0.164 0.235 0.147 2.828 0.309 1.132 -1.046 0.658 2.682 0.848
600SGT200-54 0.0566 0.571 1.944 3.287 1.040 2.399 0.204 0.598 2.831 0.743 22.252 2,690 0.204 0.502 0.195 3.655 0.610 1.415 -1.041 0.656 2.682 0.849
600SGT200-68 0.0713 0.719 2.448 4.149 1.306 2.402 0.255 0.595 3.739 0.998 29.890 5,350 0.255 1.122 0.254 4.707 1.219 1.771 -1.035 0.653 2.682 0.851
600SGT200-97 0.1017 1.025 3.487 5.941 1.853 2.408 0.356 0.590 5.724 1.586 47.481 10,885 0.356 3.913 0.356 6.784 3.533 2.495 -1.023 0.646 2.682 0.854
600SGT200-118 0.1242 1.248 4.248 7.264 2.250 2.412 0.428 0.585 7.234 2.055 61.535 13,950 0.428 7.453 0.428 8.183 6.397 3.013 -1.015 0.641 2.682 0.857
800SGT150-333 0.0346 0.384 1.308 3.297 0.796 2.929 0.060 0.396 2.690 0.369 11.050 461 0.060 0.125 0.050 1.241 0.153 0.768 -0.590 0.392 3.014 0.962
800SGT150-43 0.0451 0.501 1.704 4.299 1.036 2.931 0.078 0.394 3.762 0.587 17.589 1,021 0.078 0.295 0.070 1.678 0.339 0.994 -0.586 0.390 3.014 0.962
800SGT150-54 0.0566 0.628 2.137 5.398 1.297 2.932 0.096 0.392 4.985 0.868 25.994 2,017 0.096 0.613 0.092 2.155 0.671 1.237 -0.583 0.387 3.015 0.963
800SGT150-68 0.0713 0.791 2.691 6.805 1.629 2.934 0.120 0.389 6.596 1.275 38.163 4,033 0.120 1.264 0.118 2.755 1.340 1.542 -0.578 0.385 3.015 0.963
800SGT150-97 0.1017 1.126 3.833 9.718 2.310 2.937 0.166 0.384 9.718 2.205 66.007 10,885 0.166 3.626 0.166 3.940 3.883 2.150 -0.569 0.379 3.016 0.964
800SGT150-118 0.1242 1.372 4.670 11.860 2.804 2.940 0.198 0.380 11.860 2.804 83.964 16,182 0.198 4.733 0.198 4.733 7.033 2.578 -0.562 0.375 3.017 0.965
800SGT200-333 0.0346 0.419 1.425 3.885 0.938 3.046 0.136 0.569 2.987 0.376 11.269 461 0.136 0.100 0.106 2.092 0.167 1.676 -0.919 0.594 3.232 0.919
800SGT200-43 0.0451 0.546 1.857 5.068 1.221 3.047 0.175 0.567 4.188 0.603 18.044 1,021 0.175 0.241 0.150 2.847 0.370 2.173 -0.916 0.592 3.232 0.920
800SGT200-54 0.0566 0.685 2.330 6.365 1.530 3.049 0.218 0.565 5.566 0.897 26.856 2,017 0.218 0.515 0.200 3.687 0.731 2.713 -0.911 0.590 3.232 0.920
800SGT200-68 0.0713 0.862 2.933 8.027 1.922 3.052 0.272 0.562 7.388 1.330 39.816 4,033 0.272 1.107 0.263 4.759 1.461 3.394 -0.906 0.587 3.233 0.921
800SGT200-97 0.1017 1.228 4.179 11.475 2.728 3.057 0.380 0.556 11.090 2.352 70.425 10,885 0.380 3.722 0.380 6.922 4.234 4.770 -0.895 0.581 3.233 0.923
800SGT200-118 0.1242 1.496 5.092 14.013 3.314 3.060 0.456 0.552 13.944 3.061 91.645 16,182 0.456 7.013 0.456 8.403 7.669 5.753 -0.888 0.576 3.234 0.925

Follow us on Social Media