Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.1 MT Connection Mechanisms
MT-TL 1 / 4”, 3 / 8”, 1 / 2” & 5 / 8”
Description
Twist lock – threaded connection mechanism for media fixation. Bolts sold separately.
Approvals / Listings
European Technical Assessment ETA-21 / 1017
Corrosion Protection
Description MT-TL 1 / 4
MT-TL 3 / 8
MT-TL 1 / 2 MT-TL 5 / 8
Environmental Conditions
Dry indoor conditions( C1) Indoor with temporary condensation( C2) Dry indoor conditions( C1) Indoor with temporary condensation( C2) Dry indoor conditions( C1) Indoor with temporary condensation( C2) Dry indoor conditions( C1) Indoor with temporary condensation( C2)
MT-TL 1 / 4 OC Outdoor, low to moderate pollution( C3 / C4- low) MT-TL 3 / 8 OC Outdoor, low to moderate pollution( C3 / C4- low) MT-TL 1 / 2 OC Outdoor, low to moderate pollution( C3 / C4- low) MT-TL 5 / 8 OC Outdoor, low to moderate pollution( C3 / C4- low)
MT-TL 1 / 4 MT-TL 1 / 2 MT-TL 3 / 8 MT-TL 5 / 8
MT-TL 1 / 4 OC MT-TL 3 / 8 OC
MT-TL 1 / 2 OC MT-TL 5 / 8 OC
Ordering Information
Description
Weight Per Piece, lbs( kg)
Quantity Piece( s)
Item No. MT-TL 1 / 4 0.07( 0.03) 50 2388023 MT-TL 1 / 4 OC 0.07( 0.03) 50 2388024 MT-TL 3 / 8 0.07( 0.03) 50 2273636 MT-TL 3 / 8 OC 0.07( 0.03) 50 2273637 MT-TL 1 / 2 0.07( 0.03) 30 2273638 MT-TL 1 / 2 OC 0.07( 0.03) 30 2273639 MT-TL 5 / 8 0.06( 0.03) 30 2388025 MT-TL 5 / 8 OC 0.06( 0.03) 30 2388026
Figure 3 – MT-TL with Threaded Rod Connection
Table 108- Allowable Strength Design( ASD) Load |
Data 1, 2, 3, 4 |
Description |
Pullout lb( kN) |
Slip lb( kN) |
MT-TL 1 / 4 OC |
770
( 3.42)
|
100
( 0.44)
|
MT-TL 3 / 8 OC |
1,125
( 5.00)
|
410
( 1.83)
|
MT-TL 1 / 2 OC |
1,125
( 5.00)
|
610
( 2.71)
|
MT-TL 5 / 8 OC |
1,265
( 5.63)
|
610
( 2.71)
|
1 Minimum safety factor, Ω, for tabulated values is 3.00. 2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design( LRFD) values. 3 Loads are for twist-lock mechanism only. Design
Professional is responsible for checking bolt strength. 4 See Figure 3.
Table 109- Limit State Design( LSD) Load Data 1, 2, 3 |
Description |
Pullout lb( kN) |
Slip lb( kN) |
MT-TL 1 / 4 OC |
1,230
( 5.47)
|
110
( 0.5)
|
MT-TL 3 / 8 OC |
1,635
( 7.27)
|
620
( 2.75)
|
MT-TL 1 / 2 OC |
1,635
( 7.27)
|
915
( 4.07)
|
MT-TL 5 / 8 OC |
1,825
( 8.13)
|
830
( 3.69)
|
1 Maximum resistance factor, φ, for tabulated values is 0.53. 2 Loads are for twist-lock mechanism only. Design
Professional is responsible for checking bolt strength. 3 See Figure 3.
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