Modular Support Systems Technical Guide , Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.2 MT BASE CONNECTORS MT-B-GXL S3 OC
Description
Base plate for fixation of MT-90 and MT-100 girder structures to 9.1 " -12.8 " steel flange widths .
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-GXL S3 OC
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Ordering Information
Description
Weight Per Piece lbs ( kg )
Quantity Piece ( s )
Item No .
MT-B-GXL S3 OC 23.81 ( 10.8 ) 2 2272108
Figure 22 - MT Girder Sandwiched to Steel
MT-P-G-S3
A . MT-90 / 100
Figure 23 - MT Girder Clamped to Steel
MI-SGC-M16 ( 4 total )
A . MT-90 / 100
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Table 101 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4 , 5
F x lb ( kN )
F y
5 lb ( kN )
F z
5 lb ( kN )
M y lb ft ( kN m )
M z lb ft ( kN m )
8,440 |
3,345 |
3,345 |
3,700 |
4,450 |
( 37.54 ) |
( 14.9 ) |
( 14.9 ) |
( 5.02 ) |
( 6.04 ) |
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 . Tabulated values require that minimum grade 8.8 threaded rods must be used . 4 . Tabulated values are for assembly shown in Figure 22 . Design Professional is responsible for checking strength of supporting steel member . 5 . Tabulated values are based on friction that is provided mechanically and not due to gravity loads .
Table 102 - Limit State Design ( LSD ) Load Data 1 , 2 , 3 , 4
F x lb ( kN )
Table 103 - Allowable Strength Design ( ASD ) Load Data 1 , 2 , 3 , 4
F x lb ( kN )
F y
4 lb ( kN )
F y
4 lb ( kN )
F z
4 lb ( kN )
F z
4 lb ( kN )
M y lb ft ( kN m )
M y lb ft ( kN m )
M z lb ft ( kN m )
12,650 |
5,035 |
5,035 |
5,240 |
6,310 |
( 56.28 ) |
( 22.4 ) |
( 22.4 ) |
( 7.11 ) |
( 8.56 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.75 . 2 . Tabulated values require that minimum grade 8.8 threaded rods must be used . 3 . Tabulated values are for assembly shown in Figure 22 . Design Professional is responsible for checking strength of supporting steel member . 4 . Tabulated values are based on friction that is provided mechanically and not due to gravity loads .
M z lb ft ( kN m )
8,440 |
1,545 |
1,545 |
3,655 |
4,450 |
( 37.54 ) |
( 6.88 ) |
( 6.88 ) |
( 4.96 ) |
( 6.04 ) |
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 . Tabulated values are for assembly shown in Figure 23 . Design Professional is responsible for checking strength of supporting steel member . 4 . Tabulated values are based on friction that is provided mechanically and not due to gravity loads ..
Table 104 - Limit State Design ( LSD ) Load Data 1 , 2 , 3
F x lb ( kN )
F y
3 lb ( kN ) mm ( in )
F z
3 lb ( kN )
M y lb ft ( kN m )
M z lb ft ( kN m )
12,650 |
2,315 |
2,315 |
5,240 |
6,310 |
( 56.28 ) |
( 10.3 ) |
( 10.3 ) |
( 7.11 ) |
( 8.56 ) |
1 . Maximum resistance factor , Φ , for tabulated values is 0.75 . 2 . Tabulated values are for assembly shown in Figure 23 . Design Professional is responsible for checking strength of supporting steel member . 3 . Tabulated values are based on friction that is provided mechanically and not due to gravity loads .
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