Modular Supports System Product Technical Guide June 2026 | Page 123

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.3 MT System Connectors
MT-C-GSP T OC
Description
T-shaped 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 OC Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-C-GSP T OC
0.95( 0.43)
10
2272074
mm( in)
Figure 65 – MT Girder Connection
Table 232- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kNm)
Mz lb ft( kN m)
9,710( 43.20)
1,305( 5.80)
1,575( 7.01)
605( 0.82)
280( 0.38)
1 Minimum Safety Factor, Ω, for tabulated values is 2.2.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 65.
4 Tabulated values are based on plates being installed in pairs.
Table 233- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-70 B. MT-70 / 80( long side)
Fx Fy
lb( kN)
lb( kN)
lb( kN)
lb ft( kN m)
13,375
1,955
2,365
855
( 59.50)
( 8.71)
( 10.54)
( 1.16)
1 Maximum Resistance Factor, φ, for tabulated values is 0.65.
2 See Figure 65.
3 Tabulated values are based on plates being installed in pairs.
Fz My
Mz lb ft( kN m) 420( 0.57)
Figure 66 – MT Girder Connection Table 234- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
A. MT-70 B. MT-70 / 80( long side)
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
9,440
1,660
3,170
905
( 42.00)
( 7.39)
( 14.11)
( 1.23)
1 Minimum Safety Factor, Ω, for tabulated values is 2.0.
2 Multiply tabulated values by 1.5 to obtain minimum LRFD values.
3 See Figure 66.
4 Tabulated values are based on plates being installed in pairs.
Table 235- Limit State Design( LSD) Load Data 1, 2, 3
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
13,400
2,495
4,415
1,283
( 59.62)
( 11.10)
( 19.64)
( 1.74)
1 Maximum Resistance Factor, φ, for tabulated values is 0.7.
2 See Figure 66.
3 Tabulated values are based on plates being installed in pairs.
Mz lb ft( kN m)
530( 0.72)
Mz lb ft( kN m) 800( 1.09)
122 Modular Support Systems Technical Guide Edition 2 | Installation Systems Hilti, Inc. 1-800-879-8000 | en español 1-800-879-5000 | www. hilti. com | Hilti( Canada) Corporation | 1-800-363-4458 | www. hilti. ca