Installation Typicals - Fastening on Steel Threaded Studs

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Application
• Fastening of cable trays, pipes on a horizontal cantilever support, fastened on a
vertical structure
• Support is fastened by two X-BT-MR (horizontal distance x)
• L1 is the distance of the load center to the center of the fasteners
• Load F is the acceptable total load (all dead load including)
Boundary conditions
• These values are ONLY reflecting capacity of X-BT-MR threaded stud. Structural
analysis of support / structure is NOT in Hilti scope. See the detailed statements in
disclaimer — 2018/05/04
• Shear load fully carried by one X-BT-MR (worst-case)
• Load F acting at the distance of L1 from structure surface
x
2 studs
per strut
Result:
Load
F [lbs]
L1 [inch]
6.0 12.0 18.0 24.0 30.0 36.0 42.0 48.0
x
[inch]
3.0
322 193 138 107 88 74 64 57
4.0
386 241 175 138 114 97 84 74
5.0
439 284 210 166 138 118 103 91
6.0
483 322 241 193 161 138 121 107
7.0
520 356 271 218 183 157 138 123
8.0
552 386 297 241 203 175 155 138
Result:
L1 [inch]
F [lbs]
100 150 200 300 400 500 600 700
x
[inch]
3.0
26.00 16.25 11. 50 6.50 4.00 2.75 1.75 1.00
4.0
34.50 21.75 15.25 8.75 5.50 3.50 2.25 1.50
5.0
43.25 27.0 0 19.00 11.0 0 7.00 4.50 3.00 1.75
6.0
52.00 32.50 23.00 13.25 8.50 5.50 3.50 2.25
7.0
60.50 38.00 26.75 15.50 9.75 6.50 4.25 2.50
8.0
69.25 43.50 30.50 17.75 11. 25 7. 25 4.75 3.00
Technical assessment — maximum of L1 and F (depending on load F or lever arm length L1 and X-BT-MR distance x)
FASTENING STRUT TO STEEL
WITH X-BT-MR*
Two / Four X-BT-MR Threaded studs
X-BT-MR • Imperial
*X-BT-MR is the new generation X-BT
NOTE: load capacity used for calculation N
rec
= 810 lb (axial) / V
rec
= 970 lb (shear)
74Issued August 2018, expiry January 2022