Modular Supports System Product Technical Guide June 2026

Modular Support Systems Technical Guide, Edition 2

3.0 Modular Support System

3.2.4 MT Splice Connectors

MT-ES-40 FL / MT-ES-40 FL OC

Description

Extension splice preassembled with Fast Lock for end-toend channel connection

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 FL	Dry indoor conditions( C1) Indoor with temporary condensation( C2)
MT-ES-40 FL OC	Outdoor, low to moderate pollution( C3 / C4- low)

Figure 82 – Channel Splice Connection

Table 266- Allowable Strength Design( ASD) Load Data 1, 2, 3

Fx Fy

lb( kN)	lb( kN)	lb( kN)
2,105	130	1,210
( 9.38)	( 0.58)	( 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 82.
Table 267- Limit State Design( LSD) Load Data 1, 2

A. MT-30 / 50 / 60 // 50U( each channel to be same) Figure 83 – Channel Splice Connection

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 82.

Table 268- Allowable Strength Design( ASD) Load Data 1, 2, 3

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 83.

A. MT-30D / 40D / 50D / 50DU / 60D

Table 269- 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 83.

Modular Supports System Product Technical Guide June 2026 | Page 133