Modular Support Systems Technical Guide, Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.2 MT BASE CONNECTORS MT-B-GL O4C OC
Description
4-hole productivity base plate for MT-90 for girder-to-concrete.
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-GL O4C OC
Ordering Information
Description
Weight Per Piece lbs( kg)
Quantity Piece( s)
Item No. MT-B-GL O4C OC 15.05( 6.83) 2 2343282
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Figure 26- MT-90 Anchoring to Concrete Table 109- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
A. MT-90
F x lb( kN)
F y lb( kN)
F z lb( kN)
M y lb ft( kN m)
M z lb ft( kN m)
9,835 |
2,250 |
3,255 |
2,300 |
1,125 |
( 43.76) |
( 10.01) |
( 14.50) |
( 3.12) |
( 1.53) |
1. Minimum safety factor, Ω, for tabulated values is 2.75. 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. The design professional is responsible for checking concrete and fastener strength. 4. See Figure 26.
Table 110- Limit State Design( LSD) Load Data 1, 2, 3
F x lb( kN)
F y lb( kN)
F z lb( kN)
M y lb ft( kN m)
M z lb ft( kN m)
13,965 |
3,380 |
4,560 |
2,905 |
3,190 |
( 62.12) |
( 15.04) |
( 20.30) |
( 3.94) |
( 4.33) |
1. Maximum resistance factor, Φ, for tabulated values is 0.6. 2. Load values are for base connector only. The design professional is responsible for checking concrete and fastener strength. 3. See Figure 26.
2023
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