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