Modular Supports System Product Technical Guide June 2026 | Page 82

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.2 MT Base Connectors
MT-B-O2 FL / MT-B-O2 FL OC
Description
2-hole base plate preassembled with a Fast-Lock for channel-to-concrete or channel-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 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-O2
Dry indoor conditions( C1)
Indoor with temporary condensation( C2)
MT-B-O2 OC
Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-B-O2 FL
2.27( 1.03)
16
2399660
MT-B-O2 FL OC 2.27( 1.03) 16 2399675 mm( in)
Figure 17 – MT Concentric Channel Connection Table 136- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
A. MT-30 / 30D / 40D / 50 / 50U / 50D / 50DU / 60 / 60D
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
2,105( 9.38)
350( 1.56)
980( 4.36)
720( 0.98)
1 Minimum safety factor, Ω, for tabulated values is 2.35.
2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values.
3 See Figure 17.
4 Loads are for base connector only. Design professionals are responsible for checking
concrete and fastener strength.
Table 137- Limit State Design( LSD) Load Data 1, 2, 3
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
My lb ft( kN m)
2,775( 12.35)
490( 2.18)
1,250( 5.57)
925( 1.26)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 17.
3 Loads are for base connector only. Design professional is responsible for checking concrete
and fastener strength.
81