INSTALLATION
INCLINED UNIVERSAL NO.9 TRI-ANCHOR® modules are shipped assembled, each consisting of a forged anchor bolt, expansion shell, welded pipe and band assembly, washer and nut; along with the required field assembly hardware (2 studs c/w 2 nuts each, and 4 lag bolts) included in a separate canvas bag. Each pole installation requires 3, 4, or 5 anchor modules, depending on the pole butt diameter (see selection chart).
| Assembly 9-3 | Assembly 9-4 | Assembly 9-5 | |||||||||
pole butt at base (inches) |
Ground line moment (ft-lbs) |
pole butt at base (inches) | Ground line moment (ft-lbs) | pole butt at base (inches) |
Ground line moment (ft-lbs) | ||||||
| Dia. | Circ. | 5 degrees Rotation | Failure point | Dia. | Circ. | 5 degrees Rotation | Failure point | Dia. | Circ. | 5 degrees Rotation | Failure point |
| 8 | 25.1 | 26,460 | 48,510 | ||||||||
| 9 | 28.3 | 29,767 | 56,228 | ||||||||
| 10 | 31.4 | 33,075 | 63,945 | ||||||||
| 11 | 34,5 | 36,382 | 71,663 | 11 | 34.5 | 35,280 | 66,150 | ||||
| 12 | 37,6 | 39,690 | 79,380 | 12 | 37.6 | 42,336 | 72,765 | ||||
| 13 | 40.8 | 49,392 | 79,380 | ||||||||
| 14 | 43.9 | 56,448 | 85,995 | 14 | 43.9 | 77,175 | 99,225 |
||||
| 15 | 47.1 | 63,504 | 92,610 | 15 | 47.1 | 82,687 | 103,268 | ||||
| 16 | 50.2 | 70,560 | 99,225 | 16 | 50.2 | 88,200 | 107,310 | ||||
| 17 | 53.3 | 93,712 | 111,353 | ||||||||
| 18 | 56.5 | 99,225 | 115,395 | ||||||||
| 19 | 59.6 | 104,737 | 119,438 | ||||||||
| 20 | 62.8 | 110,250 | 123,480 | ||||||||
TOOLS REQUIRED FOR INSTALLATION
| ROCK DRILL: 2" DIAMETER (CARBIDE BIT) - MINIMUM 24" LONG |
| WRENCHES (FOR HEXAGON HEAD) | TYPE | MINIMUM QUANTITY | SIZE |
| for ANCHOR BOLTS for STUD BOLTS for LAG BOLTS |
OPEN or BOX OPEN or BOX SOCKET |
1 2 1 |
1-13/16" 1-7/16" 15/16" |
1. REMOVE OVERBURDEN: The pole butt must rest directly on the rock, so all loose overburden of soil, gravel, etc. must be removed.
2. EVALUATE ROCK: If the rock is fractured or unsound, an alternative method to the INCLINED UNIVERSAL NO.9 TRI-ANCHOR® should be used. e.g. if the rock can be easily broken, shoveled or augered, this would suggest insufficient rock soundness.
3. CHECK SLOPE: The maximum allowable slope in the rock under the pole for an INCLINED UNIVERSAL NO.9 TRI-ANCHOR® installation is 3 inches, over the diameter of the pole butt. i.e. there must not be a gap of more than 3 inches between the pole butt and the rock, and the pole must rest on the rock at some point.
4. DECIDE ON NUMBER OF MODULES: Consult the Selection Chart to decide on the required number of modules for the installation, which varies with the pole butt diameter. Where the ranges overlap, the required ground line moments will help determine the number of modules to be used.
5. ASSEMBLE ROCK DRILLING TEMPLATE: Choose the appropriate template core for the configuration chosen (i.e. 3, 4 or 5 modules). Insert the sleeves into the template core.
6. ADJUST TEMPLATE: Fit the assembled template to the pole butt, adjusting it for the pole size. Place the template right side up on the rock so that the holes to be drilled point OUTWARD from the pole center. The proper slope is given by the inclined drilling sleeve. On sloped rock, use the leveling bolts to ensure that the template is level before drilling.
7. DRILL HOLES: Begin at the highest point of the rock and drill a 2" diameter hole through the template to a depth of 24 inches. Continue drilling the remaining holes through the template to the same depth, when measured from a horizontal line. All rock dust should be cleaned out.
8. INSERT THE ANCHORS: With all holes drilled, remove the template and drop the anchors into the holes. Loosely connect the bands with the studs.
9. ERECT POLE AND TIGHTEN BANDS: Lift and hold the pole in place
vertically. Tighten all the studs to grip the pole within the bands. Ensure
that all nuts are firmly tightened.
10. TIGHTEN ANCHOR BOLTS: Tighten the nuts of the anchor bolts
firmly. In sound rock a positive anchor will develop from the expansion of the
expansion shell. In poor rock you will run out of thread before developing an
adequate bond, and an alternate location or method must be used.
11. INSTALL LAG BOLTS: Install all lag bolts with a wrench. Pre-drilling holes in the pole and using an impact wrench or socket wrench are recommended. Release the pole.
12. FINAL STEPS: Grouting of the holes is optional if ice is
a concern. Backfill any removed overburden if desired.
13. MAINTENANCE: Incorporate the INCLINED UNIVERSAL NO.9
TRI-ANCHOR® system into the regular pole and line maintenance schedule and procedures.
At each inspection ensure that all nuts and lags are in place and tight.