Modular Support Systems Technical Guide, Edition 1
3.0 MODULAR SUPPORT SYSTEM 3.2.2 MT BASE CONNECTORS MT-B-T
Description
2-hole‘ T’ base plate for channel-to-concrete or channel-to-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-T
Hot-Dipped Galvanized( HDG)
MT-B-T OC
Ordering Information
Description
Weight Per Piece lbs( kg)
Quantity Piece( s)
Item No.
MT-B-T 1.25( 0.57) 20 2272090 MT-B-T OC 1.25( 0.57) 20 2272092
Figure 7- MT Concentric Channel Connection
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Table 71- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
F x lb( kN)
F y lb( kN)
F z lb( kN)
1,400 |
725 |
225 |
( 6.24) |
( 3.23) |
( 1.01) |
1. Minimum safety factor, Ω, for tabulated values is 3.0. 2. Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values. 3. See Figure 7. 4. Load values are for base connector only. Design professional is responsible for checking concrete and fastener strength.
Table 72- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-30 / 50 / 60 / 40D
Figure 8- MT Eccentric Channel Connection
F x lb( kN)
F y lb( kN)
F z lb( kN)
1,890 |
1,005 |
310 |
( 8.42) |
( 4.49) |
( 1.40) |
1. Maximum resistance factor, Φ, for tabulated values is 0.45. 2. See Figure 7. 3. Load values are for base connector only. Design professional is responsible for checking concrete and fastener strength.
Table 73- Allowable Strength Design( ASD) Load Data 1, 2, 3, 4
F x lb( kN)
F y lb( kN)
F z lb( kN)
1,450 |
225 |
725 |
( 6.46) |
( 1.01) |
( 3.23) |
1. Minimum safety factor, Ω, for tabulated values is 3.0. 2. Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design
( LRFD) values. 3. See Figure 8. 4. Load values are for base connector only. Design professional is responsible for checking concrete and fastener strength.
Table 74- Limit State Design( LSD) Load Data 1, 2, 3
A. MT-50 |
F x lb( kN) |
F y lb( kN) |
F z lb( kN) |
|
1,960 |
310 |
1,005 |
( 8.72) |
( 1.40) |
( 4.49) |
|
|
2023 |
1. Maximum resistance factor, Φ, for tabulated values is 0.45. 2. See Figure 8. 3. Load values are for base connector only. Design professional is responsible for checking concrete and fastener strength. |
55 |