Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.2 MT Base Connectors
MT-B-G WS
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)
1“ NC” indicates“ non-coated”.
Ordering Information |
Description |
Weight Per
Piece, lbs( kg)
|
Quantity
Piece( s)
|
Item No. |
MT-B-G WS NC |
9.58( 4.34) |
4 |
2272109 |
mm( in)
Figure 32 – MT Girder Attachment
Table 166- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
Fx lb( kN) |
Fy lb( kN) |
Fz lb( kN) |
My lb ft( kN m) |
Mz lb ft( kN m) |
10,030( 44.62) |
2,620( 11.67) |
2,835( 12.61) |
1,090( 1.48) |
1,090( 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 32. |
Table 167- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-70 / 80 / 90 / 90H / 100
Fx Fy
lb( kN) |
lb( kN) |
lb( kN) |
lb ft( kN m) |
12,880 |
3,940 |
4,260 |
1,635 |
( 57.31) |
( 17.53) |
( 18.96) |
( 2.22) |
1 Maximum resistance factor, φ, for tabulated values is 0.7. |
2 Welds to be checked by the design professional. |
3 See Figure 32. |
Fz My
Mz lb ft( kN m) 1,635( 2.22)
92 Modular Support Systems Technical Guide Edition 2 | Installation Systems Hilti, Inc. 1-800-879-8000 | en español 1-800-879-5000 | www. hilti. com | Hilti( Canada) Corporation | 1-800-363-4458 | www. hilti. ca