Description Symbol Units |
MT-70 S OC MT-70 OC |
MT-80 S OC MT-80 OC |
MT-90 S OC MT-90 OC |
MT-90H OC MT-90H S OC |
MT-100 S OC MT-100 OC |
Profile of cross-section-- |
Design thickness |
t |
in
( mm)
|
0.108
( 2.75)
|
0.118
( 3)
|
0.118
( 3)
|
0.089
( 2.25)
|
0.157
( 4)
|
Width |
- |
in
( mm)
|
1.97
( 50)
|
1.97
( 50)
|
3.94
( 100)
|
3.94
( 100)
|
3.94
( 100)
|
Depth |
- |
in
( mm)
|
1.97
( 50)
|
3.94
( 100)
|
3.94
( 100)
|
3.94
( 100)
|
5.91
( 150)
|
Weight |
w |
lbs / ft
( N / m)
|
2.64
( 3.914)
|
4.43
( 6.593)
|
6.01
( 8.944)
|
6.16
( 9.17)
|
9.99
( 14.882)
|
Minimum specified yield strength |
Fy |
ksi
( MPa)
|
50.75
( 350)
|
50.75
( 350)
|
50.75
( 350)
|
50.75
( 350)
|
50.75
( 350)
|
Modulus of Elasticity |
E |
ksi
( MPa)
|
29,500
( 203,400)
|
29,500
( 203,400)
|
29,500
( 203,400)
|
29,500
( 203,400)
|
29,500
( 203,400)
|
Gross Section Properties 2 Gross cross-sectional area |
Ag |
in 2
( mm 2)
|
0.775
( 500.28)
|
1.303
( 840.82)
|
1.768
( 1140.80)
|
1.812
( 1169.30)
|
2.937
( 1894.80)
|
Moment of inertia of the gross section about x-axis |
Ix |
in 4
( mm 4)
|
0.4382
( 182,390)
|
2.5576
( 1,064,540)
|
4.2536
( 1,770,469)
|
3.9526
( 1,645,192)
|
14.2854
( 5,946,036)
|
Moment of inertia of the gross section about y-axis |
Iy |
in 4
( mm 4)
|
0.4382
( 182,390)
|
0.8663
( 360,568)
|
4.2536
( 1,770,469)
|
3.5653
( 1,483,982)
|
7.654
( 3,185,651)
|
Gross section-modulus about x-axis |
Sx |
in 3
( mm 3)
|
0.4452
( 7,296)
|
1.2993
( 21,291)
|
2.1608
( 35,409)
|
2.0078
( 32,903)
|
4.838
( 79,280)
|
Gross section-modulus about y-axis |
Sy |
in 3
( mm 3)
|
0.4452
( 7,296)
|
0.8801
( 14,423)
|
2.1608
( 35,409)
|
1.8111
( 29,679)
|
3.888
( 63,713)
|
Radius of gyration of the gross section about x-axis |
rx |
in
( mm)
|
0.752
( 19.09)
|
1.401
( 35.58)
|
1.551
( 39.39)
|
1.477
( 37.51)
|
2.206
( 56.02)
|
Radius of gyration of the gross section about y-axis |
ry |
in
( mm)
|
0.752
( 19.09)
|
0.815
( 20.71)
|
1.551
( 39.39)
|
1.403
( 35.63)
|
1.614
( 41)
|
Effective Section Properties Effective moment of inertia about x-axis |
Ix-eff |
in 4
( mm 4)
|
0.4382
( 182,390)
|
2.3832
( 991,957)
|
3.8584
( 1,605,985)
|
3.7254
( 1,550,611)
|
12.0259
( 5,005,546)
|
Effective moment of inertia about y-axis |
Iy-eff |
in 4
( mm 4)
|
0.4382
( 182,390)
|
0.6451
( 268,521)
|
3.8584
( 1,605,985)
|
3.2861
( 1,367,793)
|
6.4751
( 2,695,127)
|
Effective section modulus about X axis at stress = Fy |
Sx-eff |
in 3
( mm 3)
|
0.4452
( 7,296)
|
1.2107
( 19,839)
|
1.9601
( 32,120)
|
1.8924
( 31,011)
|
4.0728
( 66,741)
|
Effective section modulus about Y axis at stress = Fy |
Sy-eff |
in 3
( mm 3)
|
0.4452
( 7,296)
|
0.6554
( 10,741)
|
1.9601
( 32,120)
|
1.6705
( 27,374)
|
3.2893
( 53,903)
|
Factored bending moment resistance based on local buckling about x-axis( φb = 0.9) |
φbMnl |
k-in
( kNm)
|
22.75
( 2.571)
|
62.76
( 7.091)
|
92.81
( 10.49)
|
96.906
( 10.949)
|
216.03
( 22.88)
|
Factored bending moment resistance based on local buckling about y-axis( φb = 0.9) |
φbMnl |
k-in
( kNm)
|
22.75
( 2.571)
|
31.58
( 3.567)
|
92.81
( 10.49)
|
78.506
( 8.870)
|
153.16
( 17.30)
|
Factored bending moment resistance for distortional buckling about x-axis based on Kϕ = 0( φb = 0.9) |
φbMnd |
k-in
( kNm)
|
-- |
-- |
-- |
-- |
-- |
Factored bending moment resistance for distortional buckling about y-axis based on Kϕ = 0( φb = 0.9) |
φbMnd |
k-in
( kNm)
|
-- |
-- |
-- |
-- |
-- |
Factored shear resistance about x-axis( φv = 0.8) |
φvVn |
lbs
( N)
|
8,101
( 36,036)
|
8,611
( 38,304)
|
19,941
( 88,704)
|
9.936
( 44,199)
|
25,380
( 112,896)
|
Factored shear resistance about y-axis( φv = 0.8) |
φvVn |
lbs
( N)
|
8,101
( 36,036)
|
16,285
( 72,439)
|
19,941
( 88,704)
|
11.405
( 50,730)
|
40,488
( 180,096)
|
Torsional Section Properties 2 St. Venant Torsional Constant |
J |
in 4
( mm 4)
|
0.7146
( 297,456)
|
2.1217
( 883,107)
|
6.6870
( 2,783,333)
|
2.7256
( 1,134,474)
|
15.8713
( 6,606,148)
|
Torsional warping constant |
Cw |
in 4
( mm 4)
|
0.00015
( 39,434)
|
0.1693
( 45,468,000)
|
0.0023
( 610,560)
|
2.1380
( 574,110,000)
|
1.2794
( 343,560,000)
|
Distance from the centroid to the shear center along the principal x-axis |
X0 |
in
( mm)
|
0 |
0 |
0 |
0 |
0 |
Distance from the centroid to the shear center along the principal y-axis |
Y0 |
in
( mm)
|
0 |
0 |
0 |
0 |
0 |
Net polar radius of gyration about the shear center |
r0 |
in
( mm)
|
1.063
( 27.00)
|
1.621
( 41.17)
|
2.193
( 55.71)
|
2.037
( 51.73)
|
2.733
( 69.42)
|
Coefficient for determining critical elastic lateraltorsional buckling stress |
β |
- |
1 |
1 |
1 |
1.0 |
1 |
1. Tabulated values are in accordance with and CSA S136-16, the North American Specification for the Design of Cold-Formed Steel Structural Members. | |||||||
2. Tabulated gross properties, including torsional properties, are based on the full unreduced cross section of the profiles, away from the punched holes and slots. | |||||||
3. For deflection calculations, use the effective moment of inertia. | |||||||
4. C. G. is the center of gravity of the profile cross-section. | |||||||