Installation Typicals - Fastening on Steel Threaded Studs
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x
x
2 studs
4 studs
Application
• Fastening of lamps, signals, sensors on inclined cantilever support, fastened
on a vertical structure
• Support is fastened by two / four X-BT-MR (vertical distance x)
• L1 is the distance of the load center (~middle of the load) to the vertical
structure surface
• 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 / two top X-BT-MR (worst-case)
• Load F acting at the distance of L1 from structure surface
Result:
L1 [inch]
F [lbs]
100 150 200 300 400 500 600 700
x
[inch]
3.0
43.50 27.25 19.25 11.00 7.00 4.50 3.00 1.75
4.0
58.00 36.25 25.50 14.75 9.25 6.00 4.00 2.50
5.0
72.50 45.50 32.00 18.50 11.75 7.75 5.00 3.00
6.0
87.00 54.50 38.50 22.25 14.00 9.25 6.00 3.75
7.0
101.50 63.75 44.75 26.00 16.50 10.75 7.00 4.25
8.0
116.0 0 72.75 51.25 29.75 18.75 12.50 8.00 5.00
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
570 334 237 183 149 126 109 96
4.0
692 422 303 237 194 164 143 126
5.0
794 500 365 287 237 201 175 155
6.0
881 570 422 334 277 237 206 183
7.0
955 634 475 379 316 271 237 210
8.0
1,019 692 524 422 353 303 266 237
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
285 167 118 91 75 63 54 48
4.0
346 211 151 118 97 82 71 63
5.0
397 250 182 143 118 101 88 77
6.0
440 285 211 167 138 118 103 91
7.0
477 317 237 190 158 135 118 105
8.0
510 346 262 211 176 151 133 118
Result:
L1 [inch]
F [lbs]
100 150 200 300 400 500 600 700
x
[inch]
3.0
21.75 13.50 9.50 5.50 3.50 2.25 1.50 0.75
4.0
29.00 18.00 12.75 7.25 4.50 3.00 2.00 1.25
5.0
36.25 22.75 16.00 9.25 5.75 3.75 2.50 1.50
6.0
43.50 27.25 19.25 11.00 7.00 4.50 3.00 1.75
7.0
50.75 31.75 22.25 13.00 8.25 5.25 3.50 2.00
8.0
58.00 36.25 25.50 14.75 9.25 6.00 4.00 2.50
Technical assessment — maximum of L1 and F (depending on load F or lever arm length L1 and X-BT-MR distance x)
FASTENING EQUIPMENT SUPPORT
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)
79Issued August 2018, expiry January 2022