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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