Product Technical Guides : US-EN Modular Systems Product Technical Guide | Page 59

Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM
3.2.2 MT BASE CONNECTORS
MT-B-O4
Description
4-hole base plate for back-to-back channel attachment to concrete or steel ( X-BT / S-BT / F-BT compatible ).
Material Specifications
Standard 1 Grade 1 F y , ksi ( MPa ) F u
, ksi ( MPa )
GB / T 700 Q235 B 34.08 ( 235 ) 53.66 ( 370 )
1 . Mechanical properties of GB / T 700 Grade Q235 B meet or exceed the mechanical properties of ASTM A1011 SS Grade 33 .
Corrosion Protection
Electro-Galvanized ( EG )
MT-B-O4
Hot-Dipped Galvanized ( HDG )
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MT-B-O4 OC
Ordering Information
Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No .
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mm ( in )
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MT-B-O4 7.28 ( 3.3 ) 4 2272098
MT-B-O4 OC 7.28 ( 3.3 ) 4 2272099
Figure 11 - MT Channel Anchoring to Concrete
Table 79 - 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 )
3,030
700
3,590
3,485
1,860
( 13.50 )
( 3.12 )
( 15.98 )
( 4.73 )
( 2.53 )
1 . Minimum safety factor , Ω , for tabulated values is 2.0 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . See Figure 11 . 4 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
Table 80 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
A . MT-40D
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y lb ft ( kN m )
M z lb ft ( kN m )
4,095
945
4,665
5,015
2,645
( 18.23 )
( 4.21 )
( 20.77 )
( 6.80 )
( 3.59 )
1 . Maximum resistance factor , Φ , for tabulated values is 0.75 . 2 . See Figure 11 . 3 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
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