Tower installation

Experiences distilled from a project that should be actively taken into account in future projects.
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Bryon
Posts: 77
Joined: Sat Feb 16, 2019 4:35 pm
Location: Eastman, GA

Re: Tower installation

Post by Bryon »

windybob wrote:
Thu Feb 28, 2019 5:51 pm
Probably 90% of the windmills we work on in the field are not centered over the well. However, most have been there for many years. Rare to find one that's really good.
I would think that the top of the windmill tower being directly over the well would be more important than the well being in the center of the base of the tower.

Bryon

mtblah
Posts: 27
Joined: Thu Mar 26, 2020 12:09 pm
Location: new braunfels TX

Re: Tower installation

Post by mtblah »

I am working with a 3 legged tower. each leg is 120 degrees, math gets a little more complicated .
what angle should the anchor legs be set into concrete ?

Ron Stauffer
Posts: 155
Joined: Fri Dec 14, 2018 10:25 am
Location: Uncompahgre Plateau Montrose CO
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Re: Tower installation

Post by Ron Stauffer »

All 3 leg footprints are not the same footprint/angle.

Most 3 legs have a broader side footprint than the side of a 4 leg.

Applicable to Aermotor:

4 leg - 27' height, side width at base 66 3/4"

3 leg - 27' ehight, side width base 81 3/4"

Use right angle calculator on line, your knowns are the length of 2 sides of your triangle.
27' or 324" is your hypotenuse.

Half the width of a tower side is your length of your other known side of a right angle triangle-
3 leg is 40 7/8"
4 leg is 33 3/8"

You now have the above values for solving:
3 leg 82.8 degrees
4 leg 84.09 degrees

Link to right angle calculator
https://www.mathportal.org/calculators/ ... ulator.php

Ron Stauffer
Montrose CO

Ron Stauffer
Posts: 155
Joined: Fri Dec 14, 2018 10:25 am
Location: Uncompahgre Plateau Montrose CO
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Re: Tower installation

Post by Ron Stauffer »

The page out of T Lindsay's 702 book to verify the 4 leg angle

standard tower angle.jpg

Your best way is to measure your tower and use the online calculator.

But the best and easiest is to measure your sides, dig your holes, hang the tower from a hoist, attach anchors and pour fast set concrete

Ron
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windybob
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Location: Ames Oklahoma

Re: Tower installation

Post by windybob »

I'm not even touching this one. The last time I had a hypotenuse I went to the doctor.
Memory plant.... Change or clean the air filter in your air compressor! Mine runs 1/4 as much, and tools run better.

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Bryon
Posts: 77
Joined: Sat Feb 16, 2019 4:35 pm
Location: Eastman, GA

Re: Tower installation

Post by Bryon »

windybob wrote:
Fri Mar 27, 2020 6:50 pm
I'm not even touching this one. The last time I had a hypotenuse I went to the doctor.
:lol: :lol: :lol: :lol: :lol:

mtblah
Posts: 27
Joined: Thu Mar 26, 2020 12:09 pm
Location: new braunfels TX

Re: Tower installation

Post by mtblah »

THANK YOU for the plethora of responses !
I am glad there are soo many out there that are significantly more intelleigent than I , and willing to share that knowledge !
great company of windmill people.
Mike B

JEG
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Joined: Fri Feb 14, 2020 9:44 pm
Location: Lynden,Washington

Re: Tower installation

Post by JEG »

I’m planning on doing the billcobb tower installation method. I’m wandering what the average size hole is and how much concrete per hole. 8ft Dempster 12a on a 28ft 4 leg tower. Is 1/2 yard per hole in sandy soil enough? Thanks

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