Product Technical Guides : CA-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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