Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.2 MT BASE CONNECTORS MT-B-G WS NC
Description
Weldable starter bracket for all MT girders . |
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
Zinc ( Ethyl ) Silicate Primer
MT-B-G WS NC 1 ( Weldable Primer )
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1 . " NC " indicates " non-coated ". |
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Ordering Information |
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Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No .
MT-B-G WS NC 9.58 ( 4.34 ) 4 2272109
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mm ( in ) |
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Figure 24 - MT Girder Connection
Table 105 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y lb ft ( kN m )
M z lb ft ( kN m )
10,030 |
2,620 |
2,830 |
1,090 |
1,090 |
( 44.62 ) |
( 11.67 ) |
( 12.61 ) |
( 1.48 ) |
( 1.48 ) |
1 . Minimum safety factor , Ω , for tabulated values is 2.1 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . Welds to be checked by the design professional . 4 . See Figure 24 .
Table 106 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
A . MT-70 / 80 / 90 / 100
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y lb ft ( kN m )
M z lb ft ( kN m )
12,880 |
3,940 |
4,260 |
1,635 |
1,635 |
( 57.31 ) |
( 17.53 ) |
( 18.96 ) |
( 2.22 ) |
( 2.22 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.70 . 2 . Welds to be checked by the design professional . 3 . See Figure 24 .
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