[bulldozer7777]

Previous pole setting in a good soil, How about in an all rock setting & soil with water near the sea? Can anyone help me on how it is calculated. Thanks



BULLDOZER
Safety is my Game

[shonuff]

Linemans' Handbook says you can reduce depth in rock. Reduction varies with length of pole. For example:
Length of Depth in Depth in
pole Soil Rock

40' 6' 4'
45' 6.5' 4.5'
50' 7' 4.5'
55' 7.5' 5'

Don't know much about water in the holes. Pretty dry here.
Hope this helps, 'Dozer.

[shonuff]

OOPS!!
Columns got pushed together!
It was supposed to say;
40' pole-6' in soil,4' in rock
45' pole-6.5' in soil, 4.5' in rock
50' pole-7' in soil, 4.5' in rock
55' pole-7.5' in soil, 5' in rock on so on...........
The Linemans' Handbook is to linework like the Bible is to life!
It's an expensive ($80-$90) book new but sometimes you find 'em on Ebay for peanuts.

[bulldozer7777]

TNX SHONUFF THATS VERY BIG HELP! HOPING FOR SOMEONE WHO CAN HELP ME IN NEAR THE SEA OR WATERY PLACES SETTINGS OWE ONE FROM YOU



BULLDOZER
Safety is my Game

[Kevin]

We use cribs and rock mounts where the poles can't be buried.

[Utility Innovations]

Just a few comments from what I learned when working with engineering in distribution design.

When the depth setting for rock is used for pole setting, that should be for a hole drilled in solid rock. Loose rocks do not count. Those depth settings in the "Bible" are probably inadequate.

The height of a crib above ground is not added to the depth setting. The crib is used for a more secure setting in swamps and etc but the pole should still be at normal depth.

Where there is a lot of loose gravel and holes caving in, we have buried culverts and then put the pole in the buried culvert. The use of culverts may help in the Phillipines. We also used culverts where a contractor is used dig the holes ahead of time where blasting is needed. The holes are blasted out, culverts set and then backfilled. A fine grit is needed to backfill the small space between the pole and the culvert.

Every utility should have access to some kind of engineering staff or consultants and they should be responsible for the construction specifications.

Wayne

[bulldozer7777]

Way to go with that Wayne thank you for the additional info.



BULLDOZER
Safety is my Game

[Utility Innovations]

Another method when in swamps and muskeg is to push a few sticks of dynamite into the soft ground (we had special pipes that we pounded in), stand the pole up and rope guy it, then set off the dynamite. Believe it or not, the pole drops into the hole made by the dynamite and it was an approved method where I worked. We got desperate once in a rock hole that was under water and tried the same method. It didn't work, but we made some tooth picks.

Wayne

[bulldozer7777]

Whopeeee!!! you Tex & Wayne are very professional but I'll consider the culverts and drums cuz its safer, the dynamite I think is only for emergency when you hit the spring level and you cannot empty the hole of water manually. Again bros thanks for your help.



BULLDOZER
Safety is my Game

[lookinatmyfeet]

the co. up here uses tri-anchors when they are in Bedrock. I always hated working them poles cause you feel like your going over when you start tensioning....they tend to have a little more sway in them than if they were stuck in the dirt.!!

[Kevin]

Here's a rock mount and a couple of cribs ...

Attached File(s)

•  crib1.JPG (60.65K)
  Number of downloads: 52
•  pole_mount.JPG (16.12K)
  Number of downloads: 54
•  crib2.JPG (41.22K)
  Number of downloads: 46

[lookinatmyfeet]

That center pic is what we call a tri-anchor...

[639trbl]

IN SAND AND SWAMP--YOU CAN AIRJET THEM-USE AN AIR COMPRESSOR AND A LOG ROD WITH HOLES DRILLED IN IT--DIG YOUR HOLE AND STAND THE POLE IN IT AND THEN USE THE AIRJET TO SPREAD THE SAND AND THE POLE WILL SLIP DOWN TO THE DEPTH YA NEED!

OR THE OLD 55 BARREL TRICK!!!!

WE BACKFILL WITH 'FOAM' ANYWHERE IT IS SANDY OR SWAMPY!!

ANOTHER TRICK IN SAND--IF YOU ARE LOSING YOUR HOLE--STET THE DOWN, AND CANT IT BACK AND FORTH WITH PRESSURE ON IT FROM THE BOOM--KINDA LIKE SCREWING IT IN AND SHE'LL NORMALLY GO DOWN!!

OR IF ALL ELSE FAILS--BOG SHOES--------CROSSARMS OR POLES BOLTED TO THE BUT OF THE POLE, AT GROUND LEVEL, TO KEEP THEM FROM SINKING---A LOT OF EXTRA WORK, BUT IT WORKS!!

This post has been edited by 639trbl: 28 September 2004 - 04:50 PM

[bulldozer7777]

Tnx to all of you guys out there




BULLDOZER
Safety is my Game

[Hot Handz]

a suck truck and foam....the only way to set a pole in the swamp....but surprisingly FPL doesnt use foam? go figure