Modular Supports System Product Technical Guide June 2026 | Page 128

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.3 MT System Connectors
MT-C-GSP T A OC
Description
L-shaped adjustable angle gusset plate connector for MT-70 and MT-80 girders.
Material Specifications
Standard 1 Grade 1 F y, ksi( MPa) F u, ksi( MPa)
GB / T 1591 Q355 B 51.49( 355) 68.17( 470)
1 Mechanical properties of GB / T 1591 Grade Q355 B meet or exceed the mechanical properties of ASTM A1011 SS Grade 50.
Corrosion Protection
Description
Environmental Conditions
MT-C-GSP T A OC
Outdoor, low to moderate pollution( C3 / C4- low)
mm( in)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-C-GSP T A OC
1.04( 0.47)
10
2332785
Figure 74 – MT Girder Connection
Table 250- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx
Fy Fz
lb( kN)
lb( kN)
lb( kN)
lb ft( kN cm)
lb ft( kN m)
7,425
460
3,730
510
485
( 33.02)
( 2.04)
( 16.59)
( 0.69)
( 0.66)
1 Minimum safety factor, Ω, for tabulated values is 2.25.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design( LRFD)
values.
3 See Figure 74.
4 Tabulated values are based on plates being installed in pairs.
Table 251- Limit State Design( LSD) Load Data 1, 2, 3
My Mz
A. MT-70 / 80( long side)
Fx Fy
lb( kN)
lb( kN)
lb( kN)
lb ft( kN cm)
10,535
690
5,290
720
( 46.87)
( 3.07)
( 23.55)
( 0.98)
1 Maximum resistance factor, φ, for tabulated values is 0.65.
2 See Figure 74.
3 Tabulated values are based on plates being installed in pairs.
Fz My
Mz lb ft( kN m) 690( 0.94)
Figure 75 – MT Girder Connection
Table 252- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx Fy
Fz
lb( kN)
lb( kN)
lb( kN)
lb ft( kN cm)
lb ft( kN m)
7,495
1,250
4,605
940
715
( 33.34)
( 5.57)
( 20.49)
( 1.28)
( 0.97)
1 Minimum safety factor, Ω, for tabulated values is 2.0.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 75.
4 Tabulated values are based on plates being installed in pairs.
Table 253- Limit State Design( LSD) Load Data 1, 2, 3
My Mz
A. MT-70 / 80( long side)
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN cm)
9,740
1,960
6,535
1,320
( 43.34)
( 8.73)
( 29.08)
( 1.79)
1 Maximum resistance factor, φ, for tabulated values is 0.8.
2 See Figure 75.
3 Tabulated values are based on plates being installed in pairs.
Mz lb ft( kN m) 1,010( 1.37)
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