Modular Supports System Product Technical Guide June 2026 | Page 94

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.2 MT Base Connectors
MT-B-G AS OC
Description
Base connector for MT-70 and MT-80 girder-to-concrete or girder-to-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-B-G AS OC Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-B-G AS OC
1.24( 0.56)
10
2332781
mm( in)
Figure 33 – MT Girder Anchoring to Concrete
Table 168- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
9,665( 42.99)
1,575( 7.00)
3,395( 15.11)
1,665( 2.26)
1 Minimum safety factor, Ω, for tabulated values is 2.28.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 33.
4 Load values are for base connector only. The design professional is responsible for
checking concrete and fastener strength
Table 169- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-70 / 80( long side *)
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
12,560( 55.89)
2,360( 10.52)
5,100( 22.70)
2,505( 3.40)
1 Maximum resistance factor, φ, for tabulated values is 0.66.
2 See Figure 33.
3 Load values are for base connector only. The design professional is responsible for
checking concrete and fastener strength.
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