Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.6 MT ANGLE BRACES AND FITTINGS MT-B-GS AB OC
Description
Angle brace base connector for MT-70 girder to MT , concrete , or steel ( X-BT / S-BT / F-BT ).
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 .
Corrosion Protection
Hot-Dipped Galvanized ( HDG )
MT-B-GS AB OC
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Ordering Information
Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No . MT-B-GS AB OC 3.62 ( 1.64 ) 8 2332787
Figure 74 - MT Girder-to-Concrete Table 205 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4
A . MT-70
F r lb ( kN )
3,795 ( 16.90 )
1 . Safety factor , Ω , for tabulated values is 3.4 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength . 4 . See Figure 74 .
Table 206 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
F r lb ( kN )
5,280 ( 23.50 )
1 . Resistance factor , ϕ , for tabulated values is 0.4 . 2 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength . 3 . See Figure 74 .
Figure 75 - MT Girder-to-Girder Table 207 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3
A . MT-70 B . MT-80 ( long side )/ MT-90 / MT-100
F r lb ( kN )
2,940 ( 13.10 )
1 . Safety factor , Ω , for tabulated values is 2.5 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . See Figure 75 .
Table 208 - Limit State Design ( LSD ) Load Data 1 , 2
F r lb ( kN )
4,180 ( 18.60 )
1 . Resistance factor , ϕ , for tabulated values is 0.6 . 2 . See Figure 75 .
2023
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