Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.2 MT BASE CONNECTORS MT-B-O2
Description
2-hole base plate for channel-to-concrete or channel-tosteel ( 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-O2
Hot-Dipped Galvanized ( HDG )
MT-B-O2 OC
Ordering Information
Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No .
MT-B-O2 2.27 ( 1.03 ) 12 2272094 MT-B-O2 OC 2.27 ( 1.03 ) 12 2272096
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Figure 9 - MT Concentric Channel Connection
Table 75 - 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 )
2,105 |
350 |
980 |
720 |
( 9.38 ) |
( 1.56 ) |
( 4.36 ) |
( 0.98 ) |
1 . Minimum safety factor , Ω , for tabulated values is 2.35 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . See Figure 9 . 4 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
Table 76 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
A . MT-30 / 50 / 60 / 40D
Figure 10 - MT Eccentric Channel Connection
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y lb ft ( kN m )
2,775 |
490 |
1,250 |
925 |
( 12.35 ) |
( 2.18 ) |
( 5.57 ) |
( 1.26 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.55 . 2 . See Figure 9 . 3 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
Table 77 - 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 )
2,105 |
350 |
240 |
255 |
( 9.38 ) |
( 1.56 ) |
( 1.08 ) |
( 0.35 ) |
1 . Minimum safety factor , Ω , for tabulated values is 2.6 . 2 . Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD ) values . 3 . See Figure 10 . 4 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
Table 78 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
2023
A . MT-50
F x lb ( kN )
F y lb ( kN )
F z lb ( kN )
M y lb ft ( kN m )
2,660 |
490 |
310 |
335 |
( 11.85 ) |
( 2.18 ) |
( 1.40 ) |
( 0.46 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.5 . 2 . See Figure 10 . 3 . Load values are for base connector only . Design professional is responsible for checking concrete and fastener strength .
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