Modular Supports System Product Technical Guide June 2026 | Page 136

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.4 MT Splice Connectors
MT-ES-90 OC
Description
Extension splice connector for coupling MT-90, MT-90H, or MT-100 girders end-to-end. Meant to be installed with the thread-forming bolt.
Material Specifications
Description
Standard
Grade
F y, ksi
( MPa)
MT-ES-90 OC
( GB / T 1591)
( Q355 B)
51.49
( 355)
MT-ES-90 US OC ASTM A1018 1
HSLAS-F
Grade 50 MOD 1
51.49
( 355)
F u, ksi( MPa) 68.17( 470) 68.17( 470)
1 ASTM A1018 HSLAS Grade 50 MOD is an enhanced version of ASTM A1018 HSLAS Grade 50 with Fu >= 470MPa and Fy >= 355MPa. mm( in)
Corrosion Protection
Description
Environmental Conditions
MT-ES-90 OC
Outdoor, low to moderate pollution( C3 / C4- low)
MT-ES-90 US OC
Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per Piece, lbs( kg)
Quantity Piece( s)
Item No. MT-ES-90 OC 1.79( 0.81) 4 2272076 MT-ES-90 US OC 1.79( 0.81) 4 2487466
mm( in)
Figure 88 – MT Splice Connection
Table 278- Allowable Strength Design( ASD) Load Data 1, 2, 3
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My ft lb( kN m)
35,960( 160.0)
2,605( 11.60)
3,595( 16.00)
3,200( 4.34)
1 Minimum Safety Factor, Ω, for tabulated values is 2.5.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance
Factor Design( LRFD) values.
3 See Figure 88.
Table 279- Limit State Design( LSD) Load Data 1, 2
A. MT-90 / 100( short side)
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My ft lb( kN m)
46,760( 208.0)
3,390( 15.10)
4,675( 20.80)
3,340( 4.53)
1 Maximum Resistance Factor, φ, for tabulated values is 0.55.
2 See Figure 88.
135