Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.5 MT Angle Braces and Fittings
MT-B-GS AB OC
Description
Adjustable angle brace base 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
Description
Environmental Conditions MT-B-GS AB OC Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information |
Description |
Weight Per
Piece, lbs( kg)
|
Quantity
Piece( s)
|
Item No. |
MT-B-GS AB OC |
3.62( 1.64) |
8 |
2332787 |
mm( in)
Figure 94 – MT Girder-to-Concrete Table 290- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
A. MT-70
Fr lb( kN) 3,800( 16.90)
1 Minimum safety factor, Ω, for tabulated values is 4.0. 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 94.
Table 291- Limit State Design( LSD) Load Data 1, 2, 3
Fr lb( kN) 5,280( 23.50)
1 Maximum resistance factor, φ, for tabulated values is 0.35.
2 Load values are for base connector only. Design professional is responsible for checking concrete and fastener strength.
3 See Figure 94.
Figure 95 – MT Girder-to-Girder Table 292- Allowable Strength Design( ASD) Load Data 1, 2, 3
A. B.
MT-70 MT-80( long side)/ MT-90 / MT-100
Fr lb( kN) 2,940( 13.10)
1 Minimum safety factor, Ω, for tabulated values is 2.5. 2 Multiply tabulated values by 1.5 to obtain minimum LRFD values. 3 See Figure 95.
Table 293- Limit State Design( LSD) Load Data 1, 2
Fr lb( kN) 4,180( 18.60)
1 Maximum resistance factor, φ, for tabulated values is 0.6.
2 See Figure 95.
140 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