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ne il | Looking to put up 120 ft tower (12ftx12ft)for my grain legs. Does anybody have any charts,pictures,or schematics,directions on how to properly construct a foundation for a tower this size Thanks |
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Sac & Story county IA | Big wooden poles are to be 4 feet plus 10% of height. Following that, yours should be 16 feet deep. So, at least that deep.
Talk to someone that has the letters PE by his name on that size of project. |
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sc nebraska | We put up a 120' last summer, We didn't do any of the work so I don't have any directions, but here are a few pics of the pad.
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 IMG00059.jpg (86KB - 504 downloads)
IMG00060.jpg (91KB - 434 downloads)
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NE SD | Millwrights have all said at least one foot under for every 10 above ground. The most common sense I've heard is a digging a 2' wide trench on two opposing sides of the tower and then putting at least a 2' cap on it. |
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sc nebraska | Other pics are too big to upload but if you have any questions I'll try to answer them. |
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Renville Minnesota | Whoever your buying the tower from should be able to provide you with the detailed information. For a donation to Relay for life foundation our local REA coop will come out with their auger and drill holes. Not sure how deep they went, as our tower is only 90', but i'd guess the went ten feet for sure.. The pics in this thread look extremely familiar. |
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Portland, ND | Verizon put up a 250' cell tower on one of our fields last year, a three leg free standing unit. All the tower company did was dig a hole about 5' deep, fill it with rebar, (i think 3/4 rebar, 1' spacing, 2 layers) and dump cement about 2' thick on top of it. They brought up 3 footings to ground level.
They said it was rated for wind load of 90 mph with 1/2" of ice on it.
It was a simple setup, and they didn't have to fight with groundwater.
It looked like the pictures, but upside down. The dirt fill was on top of the large slab, and the cement columns came up to ground level.
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Sac & Story county IA | "They said it was rated for wind load of 90 mph with 1/2" of ice on it. "
Last winter we had #6 overhead wire with ice the size of 2 liter pop bottles on it. Never seen anything close to that. If nature wants to do something, it can. Still cleaning up trees and stuff. Lot of power running on single wire, earth return 4 months later.
Build everything hell for stout. |
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Western EC Iowa | Our base pad is 7 ft deep, 18 feet square and 2 feet thick. Pilings 2 ft square then filled to grade with lime and capped. We are only 60 tall now but spec'd for 120. Ben |
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Flora IL | Here's a side pic we used to have one leg (the smaller one) in the middle but have added ther larger one just recently. 10 ft deep and not sure on width.
http://sphotos.ak.fbcdn.net/hphotos-ak-sjc1/hs539.snc3/30564_390048... |
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Slicker than a Yes album. | Like others said, ask the tower manuf (if it's new) for a diagram. This one is for a 12' square tower, each corner goes down 15 feet. (1 foot deep for every 10 feet of height) Lots of iron in it, bolts tied to the rebar with nuts and washers to help hold it in the concrete. Holes in between the anchors are 5 feet deep. The leg crew welded the top iron anchors so it was square and tied into itself for added strength.
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IMG_0030.JPG (76KB - 477 downloads)
IMG_0031.JPG (70KB - 426 downloads)
IMG_0035.JPG (86KB - 441 downloads)
IMG_0056.JPG (70KB - 508 downloads)
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ne il | The manufacture would be me. I plan to copy the neighbors tower it is made from a very reputable company. I do have quite a few steel yards around to get steel. |
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| collegeboy - 4/30/2010 16:55
Like others said, ask the tower manuf (if it's new) for a diagram. This one is for a 12' square tower, each corner goes down 15 feet. (1 foot deep for every 10 feet of height) Lots of iron in it, bolts tied to the rebar with nuts and washers to help hold it in the concrete. Holes in between the anchors are 5 feet deep. The leg crew welded the top iron anchors so it was square and tied into itself for added strength.
In reading about the joints .on rerod The wired ones need lapped 3 time as far as ones that had one inch spacers between them
they said the concrete could not get ahold of the wired ones |
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Grain Leg tower foundation??
