3.0 MODULAR SUPPORT SYSTEM 3.2.1 MT CONNECTION MECHANISMS MT-CTAB
Description
Screw for channel connections . MT-CTAB screw is fastened using the TX-50 or an 11 / 16 " ( 17 mm ) diameter socket .
Material Specifications
Standard 1 Grade 1 F y , ksi ( MPa ) F u
, ksi ( MPa ) EN-10025-2 S235 JR 34.08 ( 235 ) 53.66 ( 370 )
1 . Mechanical properties of EN-10025-2 Grade S235 JR meet or exceed the mechanical properties of ASTM A1011 SS Grade 33 .
Modular Support Systems Technical Guide , Edition 1
Corrosion Protection
Electro-Galvanized ( EG )
MT-CTAB
Hot-Dipped Galvanized ( HDG )
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MT-CTAB OC
Ordering Information
Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No .
MT-CTAB 0.11 ( 0.05 ) 100 2332797 MT-CTAB OC 0.11 ( 0.05 ) 100 2332788
Figure 4 - MT Channel Connection
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mm ( in )
Table 65 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
415 |
505 |
1,405 |
( 1.86 ) |
( 2.26 ) |
( 6.25 ) |
1 . Minimum safety factor , Ω , for tabulated values is 2.3 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . See Figure 4 .
Table 66 - Limit State Design ( LSD ) Load Data 1 , 2
A . MT-30 / 50 / 60 B . MT-40D C . MT-CTAB D . MT-TL
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
525 |
810 |
1,850 |
( 2.35 ) |
( 3.61 ) |
( 8.23 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.6 . 2 . See Figure 4 .
Figure 5 - MT Channel Connection Table 67 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3
A . MT-30 / 50 / 60 B . MT-50 / 60 C . MT-CTAB
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
505 |
505 |
1,405 |
( 2.26 ) |
( 2.26 ) |
( 6.25 ) |
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 5 .
Table 68 - Limit State Design ( LSD ) Load Data 1 , 2
2023
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
810 |
810 |
1,850 |
( 3.61 ) |
( 3.61 ) |
( 8.23 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.75 . 2 . See Figure 5 .
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