Modular Supports System Product Technical Guide June 2026 | Página 158

Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.8 MT Clamps and Channel Ties
MT-CC-40D
Description
Clamp for connecting double channel to channel or girder. Meant to be installed with the 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-CC-40D
Dry indoor conditions( C1)
Indoor with temporary condensation( C2)
MT-CC-40D OC
Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per
Piece, lbs( kg)
Quantity
Piece( s)
Item No.
MT-CC-40D
1.02( 0.47)
10
2322398
MT-CC-40D OC 1.02( 0.47) 10 2322399 mm( in)
Figure 124 – Channel-to-Channel Connection
Table 347- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
1,010
( 4.50)
1,685
( 7.50)
1,120
( 5.00)
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 124.
4 Loading in the negative Z-direction is not recommended for this connector.
Table 348- Limit State Design( LSD) Load Data 1, 2, 3
A.
B.
MT-40D
MT-30 / 40D / 50 / 50U / 50DU / 50D / 60 / 60D
Figure 125 – Channel-to-Girder Connection
A.
MT-40D
B.
MT-70 / 80 / 90 / 100
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
1,405
( 6.26)
2,345
( 10.44)
1,560
( 6.96)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 124.
3 Loading in the negative Z-direction is not recommended for this connector.
Table 349- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
1,010
( 4.50)
2,035
( 9.06)
1,645
( 7.33)
1 Minimum safety factor, Ω, for tabulated values is 2.35.
2 Multiply tabulated values by 1.5 to obtain minimum LRFD values.
3 See Figure 125.
4 Loading in the negative Z-direction is not recommended for this connector.
Table 350- Limit State Design( LSD) Load Data 1, 2, 3
Fx lb( kN)
Fy lb( kN)
Fz lb( kN)
1,405
( 6.26)
2,645
( 11.78)
2,140
( 9.53)
1 Maximum resistance factor, φ, for tabulated values is 0.55.
2 See Figure 125.
3 Loading in the negative Z-direction is not recommended for this connector.
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