Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.2.1 MT Connection Mechanisms
MT-HL 3 / 8” OC / MT-HL 1 / 2“ OC
Description
Threaded connection mechanism for media fixation to be used in the serrated channel of the MT-90H girder.
Material Specifications High Strength Steel
Corrosion Protection
Description
Environmental Conditions MT-HL 3 / 8 OC Outdoor, low to moderate pollution( C3 / C4- low) MT-HL 1 / 2 OC Outdoor, low to moderate pollution( C3 / C4- low)
Ordering Information
Description
Weight Per Piece, lbs( kg)
Quantity Piece( s)
Item No. MT-HL 3 / 8 OC 0.07( 0.04) 25 2431091 MT-HL 1 / 2 OC 0.07( 0.04) 25 2431081
MT-HL 3 / 8” OC MT-HL 1 / 2” OC
Figure 7 – MT Connection
A. MT-HL 3 / 8”
Figure 8 – MT Connection
A. MT-HL 1 / 2”
Table 116- Allowable Strength Design( ASD) Load Data 1, 2, 3 Pullout
Slip lb( kN) lb( kN) 1,530
630
( 6.81)
( 2.82)
1 Minimum Safety Factor Ω, for tabulated values is 2.68. 2 Multiply tabulated values by 1.5 to obtain minimum Load and Resistance Factor Design( LRFD) values. 3 See Figure 7. Loads are for MT-HL only. EOR is responsible for checking bolt strength.
Table 117- Limit State Design( LSD) Load Data 1, 2 Pullout
Slip lb( kN) lb( kN) 1,970
825
( 8.78)
( 3.68)
1 Maximum Resistance Factor φ, for tabulated values is 0.48.
2 See Figure 7. Loads are for MT-HL only. EOR is responsible for checking bolt strength.
Table 118- Allowable Strength Design( ASD) Load Data 1, 2, 3 Pullout
Slip lb( kN) lb( kN) 1,530
875
( 6.81)
( 3.89) 1 Minimum Safety Factor, Ω, for tabulated values is 2.68. 2 Multiply tabulated values by 1.5 to obtain minimum LRFD values. 3 See Figure 8. Loads are for MT-HL only. EOR is responsible for checking bolt strength.
Table 119- Limit State Design( LSD) Load Data 1, 2 Pullout
Slip lb( kN) lb( kN) 1,970
1,140
( 8.78)
( 5.07) 1 Maximum Resistance Factor, φ, for tabulated values is 0.48. 2 See Figure 8. Loads are for MT-HL only. EOR is responsible for checking bolt strength.
74 Modular Support Systems Technical Guide Edition 2 | Installation Systems Hilti, Inc. 1-800-879-8000 | en español 1-800-879-5000 | www. hilti. com | Hilti( Canada) Corporation | 1-800-363-4458 | www. hilti. ca