Modular Supports System Product Technical Guide June 2026 | Seite 84

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.2 MT Base Connectors
MT-B-O2B
Description
2-hole base plate for back-to-back channel-to-concrete or channel-to-steel( X-BT / S-BT / F-BT compatible). Meant to be assembled 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-B-O2B
Dry indoor conditions( C1)
Indoor with temporary condensation( C2)
MT-B-O2B OC
Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-B-O2B
4.54( 2.06)
6
2282212
MT-B-O2B OC 4.54( 2.06) 6 2282213
mm( in)
Figure 19 – MT Channel Anchoring to Concrete
Table 140- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
3,030
( 13.50)
700
( 3.12)
3,590
( 15.98)
600
( 0.82)
1 Minimum safety factor, Ω, for tabulated values is 2.0.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 19.
4 Load values are for base connector only. The design professional is responsible for
checking concrete and fastener strength.
Table 141- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-40D, MT-50D, MT50 DU
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
4,095( 18.23)
945( 4.21)
4,665( 20.77)
815( 1.11)
1 Maximum resistance factor, φ, for tabulated values is 0.65.
2 See Figure 19.
3 Load values are for base connector only. The design professional is responsible for
checking concrete and fastener strength.
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