Modular Supports System Product Technical Guide June 2026 | Page 132

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.4 MT Splice Connectors
MT-ES-40
Description
Extension splice for end-to-end channel connection meant to be installed with Twist Lock and Twist Lock Bolt.
Material Specifications
Standard 1 Grade 1 F y, ksi( MPa) F u, ksi( MPa)
GB / T 700 Q235 B 34.08( 235) 53.66( 370)
1 Mechanical properties of GB / T 700 Grade Q235 B meet or exceed the mechanical properties of ASTM A1011 SS Grade 33.
Corrosion Protection
Description
Environmental Conditions
MT-ES-40
Dry indoor conditions( C1)
Indoor with temporary condensation( C2)
MT-ES-40 OC
Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-ES-40
1.79( 0.81)
12
2272062
MT-ES-40 OC 1.79( 0.81) 12 2272063
mm( in)
Figure 80 – Channel Splice Connection
A. MT-30 / 50 / 60 / 40U / 50U( each channel to be same) Figure 81 – Channel Splice Connection
Table 262- Allowable Strength Design( ASD) Load Data 1, 2, 3
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
2,105( 9.38)
130( 0.58)
1,210( 5.40)
1 Minimum safety factor, Ω, for tabulated values is 2.6.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 80.
Table 263- Limit State Design( LSD) Load Data 1, 2
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
2,930( 13.05)
180( 0.81)
1,685( 7.50)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 80.
Table 264- Allowable Strength Design( ASD) Load Data 1, 2, 3
A. MT-40D
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My ft lb( kN m)
4,215( 18.76)
260( 1.16)
2,425( 10.80)
475( 0.65)
1 Minimum safety factor, Ω, for tabulated values is 2.6.
2 Multiply tabulated values by 1.5 to obtain minimum LRFD values.
3 See Figure 81.
Table 265- Limit State Design( LSD) Load Data 1, 2
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My ft lb( kN m)
5,865
( 26.10)
360
( 1.62)
3,370
( 15.0)
665
( 0.906)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 81.
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