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-100 S OC MT-100 OC |
Design thickness |
t |
in
( mm )
|
0.108
( 2.75 )
|
0.118
( 3 )
|
0.118
( 3 )
|
0.157
( 4 )
|
Width |
- |
in
( mm )
|
1.97
( 50 )
|
1.97
( 50 )
|
3.94
( 100 )
|
3.94
( 100 )
|
Depth |
- |
in
( mm )
|
1.97
( 50 )
|
3.94
( 100 )
|
3.94
( 100 )
|
5.91
( 150 )
|
Weight |
w |
lbs / ft
( kg / m )
|
2.64
( 3.914 )
|
4.43
( 6.593 )
|
6.01
( 8.944 )
|
9.99
( 14.882 )
|
Minimum specified yield strength |
F y |
ksi
( MPa )
|
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 )
|
Gross cross-sectional area |
A g |
in 2
( mm 2 )
|
0.775
( 500.28 )
|
1.303
( 840.82 )
|
1.768
( 1140.80 )
|
2.937
( 1894.80 )
|
Moment of inertia of the gross section about x-axis |
I x |
in 4
( mm 4 )
|
0.4382
( 182,390 )
|
2.5576
( 1,064,540 )
|
4.2536
( 1,770,469 )
|
14.2854
( 5,946,036 )
|
Moment of inertia of the gross section about y-axis |
I y |
in 4
( mm 4 )
|
0.4382
( 182,390 )
|
0.8663
( 360,568 )
|
4.2536
( 1,770,469 )
|
7.654
( 3,185,651 )
|
Gross section-modulus about x-axis |
S x |
in 3
( mm 3 )
|
0.4452
( 7,296 )
|
1.2993
( 21,291 )
|
2.1608
( 35,409 )
|
4.838
( 79,280 )
|
Gross section-modulus about y-axis |
S y |
in 3
( mm 3 )
|
0.4452
( 7,296 )
|
0.8801
( 14,423 )
|
2.1608
( 35,409 )
|
3.888
( 63,713 )
|
Radius of gyration of the gross section about x-axis |
r x |
in
( mm )
|
0.752
( 19.09 )
|
1.401
( 35.58 )
|
1.551
( 39.39 )
|
2.206
( 56.02 )
|
Radius of gyration of the gross section about y-axis |
r y |
in
( mm )
|
0.752
( 19.09 )
|
0.815
( 20.71 )
|
1.551
( 39.39 )
|
1.614
( 41 )
|
Effective moment of inertia about x-axis |
I x-eff |
in 4
( mm 4 )
|
0.4382
( 182,390 )
|
2.3832
( 991,957 )
|
3.8584
( 1,605,985 )
|
12.0259
( 5,005,546 )
|
Effective moment of inertia about y-axis |
I y-eff |
in 4
( mm 4 )
|
0.4382
( 182,390 )
|
0.6451
( 268,521 )
|
3.8584
( 1,605,985 )
|
6.4751
( 2,695,127 )
|
Effective section modulus about x-axis at stress = F y |
S x-eff |
in 3
( mm 3 )
|
0.4452
( 7,296 )
|
1.2107
( 19,839 )
|
1.9601
( 32,120 )
|
4.0728
( 66,741 )
|
Effective section modulus about y-axis at stress = F y |
S y-eff |
in 3
( mm 3 )
|
0.4452
( 7,296 )
|
0.6554
( 10,741 )
|
1.9601
( 32,120 )
|
3.2893
( 53,903 )
|
Factored bending moment resistance based on local buckling about x-axis ( ϕ b = 0.9 ) |
ϕ b
M nl
|
k-in
( kN m )
|
22.75
( 2.571 )
|
62.76
( 7.091 )
|
92.81
( 10.49 )
|
216.03
( 22.88 )
|
Factored bending moment resistance based on local buckling about y-axis ( ϕ b = 0.9 ) |
ϕ b
M nl
|
k-in
( kN m )
|
22.75
( 2.571 )
|
31.58
( 3.567 )
|
92.81
( 10.49 )
|
153.16
( 17.30 )
|
Factored bending moment resistance for distortional buckling about x-axis based on Kφ = 0 ( ϕ b = 0.9 ) |
ϕ b
M nd
|
k-in
( kN m )
|
N . A . |
N . A . |
N . A . |
N . A . |
Factored bending moment resistance for distortional buckling about y-axis based on Kφ = 0 ( ϕ b = 0.9 ) |
ϕ b
M nd
|
k-in
( kN m )
|
N . A . |
N . A . |
N . A . |
N . A . |
Factored shear resistance about x-axis ( ϕ v = 0.8 ) |
ϕ v
V n
|
lbs
( N )
|
8,101
( 36,036 )
|
8,611
( 38,304 )
|
19,941
( 88,704 )
|
25,380
( 112,896 )
|
Factored shear resistance about y-axis ( ϕ v = 0.8 ) |
ϕ v
V n
|
lbs
( N )
|
8,101
( 36,036 )
|
16,285
( 72,439 )
|
19,941
( 88,704 )
|
40,488
( 180,096 )
|
St . Venant Torsional Constant |
J |
in 4
( mm 4 )
|
0.7146
( 297,456 )
|
2.1217
( 883,107 )
|
6.6870
( 2,783,333 )
|
15.8713
( 6,606,148 )
|
Torsional Warping Constant |
C w |
in 6
( mm 6 )
|
0.00015
( 39,434 )
|
0.1693
( 45,468,000 )
|
0.0023
( 610,560 )
|
1.2794
( 343,560,000 )
|
Distance from the centroid to the shear center along the principal x-axis |
X 0 |
in
( mm )
|
0 |
0 |
0 |
0 |
Distance from the centroid to the shear center along the principal y-axis |
Y 0 |
in
( mm )
|
0 |
0 |
0 |
0 |
Net polar radius of gyration about the shear center |
r 0 |
in
( mm )
|
1.063
( 27.00 )
|
1.621
( 41.17 )
|
2.193
( 55.71 )
|
2.733
( 69.42 )
|