Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.3 MT SYSTEM CONNECTORS MT-C-GSP T A OC
Description
Adjustable gusset plate for T-shaped connections with MT-70 and MT-80 girders .
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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 .
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Corrosion Protection
Hot-Dipped Galvanized ( HDG )
MT-C-GSP T A OC
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mm ( in )
Ordering Information
Description |
Weight Per Piece lbs ( kg ) |
Quantity Piece ( s ) |
Item No . |
MT-C-GSP T A OC 1.04 ( 0.47 ) 10 2332785
Figure 55 - MT Girder Connection
Table 167 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4
F x lb ( kN ) |
F y lb ( kN ) |
F z lb ( kN ) |
M y ft lb ( kN m ) |
M z ft lb ( kN m ) |
7,420 |
455 |
3,725 |
505 |
485 |
( 33.02 ) |
( 2.04 ) |
( 16.59 ) |
( 0.69 ) |
( 0.66 ) |
1 . Minimum safety factor , Ω , for tabulated values is 2.25 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . Tabulated values are based on plates being installed in pairs . 4 . See Figure 55 .
Table 168 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
F x lb ( kN ) |
F y lb ( kN ) |
F z lb ( kN ) |
M y ft lb ( kN m ) |
M z ft lb ( kN m ) |
A . MT-70 / 80 ( long side )
10,535 |
690 |
5,290 |
720 |
690 |
( 46.87 ) |
( 3.07 ) |
( 23.55 ) |
( 0.98 ) |
( 0.94 ) |
1 . Maximum resistance factor , ϕ , for tabulated values is 0.65 . 2 . Tabulated values are based on plates being installed in pairs . 3 . See Figure 55 .
Figure 56 - MT Girder Connection
Table 169 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4
F x lb ( kN ) |
F y lb ( kN ) |
F z lb ( kN ) |
M y ft lb ( kN m ) |
M z ft lb ( kN m ) |
7,495 |
1,250 |
4,605 |
940 |
715 |
( 33.34 ) |
( 5.57 ) |
( 20.49 ) |
( 1.28 ) |
( 0.97 ) |
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 . Tabulated values are based on plates being installed in pairs . 4 . See Figure 56 .
Table 170 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
A . MT-70 / 80 ( long side )
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y ft lb ( kN m )
M z ft lb ( kN m )
9,740 |
1,885 |
6,535 |
1,320 |
1,010 |
( 43.34 ) |
( 8.39 ) |
( 29.08 ) |
( 1.79 ) |
( 1.37 ) |
1 . Maximum resistance factor , ϕ , for tabulated values is 0.75 . 2 . Tabulated values are based on plates being installed in pairs . 3 . See Figure 56 .
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