Product Technical Guides : US-EN Modular Systems Product Technical Guide | Page 26

Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.1.1 CROSS-SECTION PROPERTIES OF MT PROFILES
Table 4 - Cross-Section Properties of MT Angle Profiles 1 , 3
Description Symbol Units MT-10
MT-15 MT-15 OC
Profile of cross-section - -
Design thickness
t
in
( mm )
0.047
( 1.2 )
0.059
( 1.5 )
Width
-
in
( mm )
0.79
( 20 )
1.06
( 27 )
Depth
-
in
( mm )
1.02
( 26 )
1.38
( 35 )
Weight
w
lbs / ft
( kg / m )
0.314
( 0.47 )
0.527
( 0.78 )
Minimum specified yield strength
F y
ksi
( MPa )
40.6
( 280 )
40.6
( 280 )
Modulus of elasticity
E
ksi
( MPa )
29,500
( 203,400 )
29,500
( 203,400 )
Gross Section Properties 2
Gross cross-sectional area
A g
in 2
( mm 2 )
0.092
( 59.62 )
0.155
( 99.90 )
Moment of inertia of the gross section about x-axis
I x
in 4
( mm 4 )
0.0114
( 4,765 )
0.0347
( 14,440 )
Moment of inertia of the gross section about y-axis
I y
in 4
( mm 4 )
0.0063
( 2,630 )
0.0192
( 8,013 )
Gross section-modulus about x-axis
S x
in 3
( mm 3 )
0.0168
( 275.1 )
0.0376
( 615.7 )
Gross section-modulus about y-axis
S y
in 3
( mm 3 )
0.0112
( 183 )
0.0251
( 410.5 )
Radius of gyration of the gross section about x-axis
r x
in
( mm )
0.352
( 8.94 )
0.473
( 12.0 )
Radius of gyration of the gross section about y-axis
r y
in
( mm )
0.261
( 6.64 )
0.353
( 8.96 )
Net Section Properties
Net cross-sectional area
A n
in 2
( mm 2 )
0.053
( 34.42 )
0.106
( 68.40 )
Net section-modulus about x-axis
S x
in 3
( mm 3 )
0.0135
( 221.1 )
0.0323
( 528.8 )
Net section-modulus about y-axis
S y
in 3
( mm 3 )
0.0084
( 138.2 )
0.0207
( 339.9 )
Radius of gyration of the gross section about x-axis
r x
in
( mm )
0.398
( 10.12 )
0.517
( 13.14 )
Radius of gyration of the gross section about y-axis
r y
in
( mm )
0.296
( 7.53 )
0.386
( 9.81 )
1 . Tabulated values are in accordance with AISI S100-16 , the North American Specification for the Design of Cold-Formed Steel Structural Members . 2 . Tabulated gross properties are based on the full unreduced cross section of the profiles , away from the punched holes and slots . 3 . C . G . is center of gravity of the profile cross-section .
Trapeze Load Tables for MT Angle Profiles
Table 5 - Allowable Beam Loads 1 , 2 , 4 , 5 Table 6 - Maximum Factored Beam Loads 1 , 3 , 5
Span in ( cm )
2023
Max Factored Concentrated Load P , lbs ( N ) MT-10
MT-15 Braced Unbraced Braced Unbraced
24
39
39
139
130
( 61.0 )
( 170 )
( 170 )
( 615 )
( 575 )
48
19
18
69
69
( 121.9 )
( 80 )
( 80 )
( 305 )
( 305 )
72
12
9
45
45
( 182.9 )
( 50 )
( 40 )
( 200 )
( 200 )
Span in ( cm )
Max Factored Concentrated Load P , lbs ( N ) MT-10
MT-15 Braced Unbraced Braced Unbraced
24
58
58
208
195
( 61.0 )
( 255 )
( 255 )
( 925 )
( 865 )
48
28
27
103
103
( 121.9 )
( 120 )
( 120 )
( 455 )
( 455 )
72
18
13
67
67
( 182.9 )
( 80 )
( 55 )
( 295 )
( 295 )
1 . Loads are based on AISI S100-16 and CSA S136-16 , the North American Specification for the Design of Cold-Formed Steel Structural Members . 2 . Safety Factor for flexure is 2.0 . 3 . Resistance Factor for flexure is 0.75 . 4 . Multiply tabulated load values by 1.5 to obtain Load and Resistance Factor Design ( LRFD ) values . 5 . Profile weight is accounted for in the tabulated load values .
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