Modular Supports System Product Technical Guide June 2026

Modular Support Systems Technical Guide, Edition 2

3.0 Modular Support System

3.2.3 MT System Connectors

MT-C-GL OC

Description

Angle connector for MT-80( long side), MT-90, MT-90H, and MT-100 girders. Use as a base for attachment to concrete or steel( X-BT / S-BT / F-BT compatible).

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-GL OC	Outdoor, low to moderate pollution( C3 / C4- low)

Ordering Information
Description	Weight Per Piece, lbs( kg)	Quantity Piece( s)	Item No.
MT-C-GL OC	2.64( 1.2)	10	2272066

mm( in)

Figure 54 – MT Single Angle Connection

Table 210- Allowable Strength Design( ASD) Load Data 1, 2, 3

Fx lb( kN)	Fy lb( kN)	Fz lb( kN)
3,070( 13.65)	2,610( 11.6)	3,070( 13.65)
1 Minimum safety factor, Ω, for tabulated values is 2.55.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 54.

Table 211- Limit State Design( LSD) Load Data 1, 2

A. MT-80( long side)/ 90 / 90H / 100

Figure 55 – MT Double Angle Connection

Fx lb( kN)	Fy lb( kN)	Fz lb( kN)
4,910( 21.83)	3,680( 16.38)	4,910( 21.83)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 54.

Table 212- Allowable Strength Design( ASD) Load Data 1, 2, 3

Fx lb( kN)	Fy lb( kN)	Fz lb( kN)	My lb ft( kN m)	Mz lb ft( kN m)
7,340( 32.65)	5,230( 23.27)	5,620( 25.00)	1,320( 1.79)	875( 1.19)
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 55.

Table 213- Limit State Design( LSD) Load Data 1, 2

A. MT-80( long side)/ 90 / 90H / 100

Fx Fy

lb( kN)	lb( kN)	lb( kN)	lb ft( kN m)
10,690	7,360	7,980	1,870
( 47.58)	( 32.76)	( 35.49)	( 2.54)
1 Maximum resistance factor, φ, for tabulated values is 0.65.
2 See Figure 55.

Fz My

Mz lb ft( kN m) 1,140( 1.55)

Modular Supports System Product Technical Guide June 2026 | Page 115