Author Topic: tower foundations  (Read 976 times)

0 Members and 1 Guest are viewing this topic.

fanman

  • Jr. Member
  • **
  • Posts: 67
tower foundations
« on: July 25, 2007, 10:14:24 PM »
hello everyone fanman here,

well ive embarked on another tower building venture,and im looking for some input on what i should do, and how i should do it, so here it goes, ive moved here within the last year and ive finially got around to putting a tower togehter, i want to make it 60 to 80 feet freestanding graduated pole tower, im a little curious about the foundation, is there anybody that knows what kind of loads this tower will see? ive got a 16 feet dia axial flux machine for the top of it, later i want to up size to a 20 foot dia machine, so that would be the max prop it would see, im also going to make it a tilt up tower, i was thinking about 10 to 12 yards of concrete buried about 5 feet deep, the tower pipes are going to be a top sect. 6 inch second sect,10 inch and the third sect,20 inch or so, does anybody have info on a presice measurement of loading the tower will see,and of course i need all the info i can get,    thanks fanman
« Last Edit: July 25, 2007, 10:14:24 PM by (unknown) »

Warrior

  • Full Member
  • ***
  • Posts: 175
  • Country: ar
Re: tower foundations
« Reply #1 on: July 25, 2007, 05:45:28 PM »
Fanman,


Check this post, scroll to the bottom...10kw bergey on freestanding tower.


Warrior

« Last Edit: July 25, 2007, 05:45:28 PM by Warrior »
Why can't Murphy's Law be used to my advantage?

Warrior

  • Full Member
  • ***
  • Posts: 175
  • Country: ar
Re: tower foundations
« Reply #2 on: July 25, 2007, 05:47:20 PM »
Sorry, hit post instead of preview. Here's the link to the story:


http://www.fieldlines.com/story/2007/7/16/3450/63291

« Last Edit: July 25, 2007, 05:47:20 PM by Warrior »
Why can't Murphy's Law be used to my advantage?

vawtman

  • Hero Member
  • *****
  • Posts: 1425
Re: tower foundations
« Reply #3 on: July 26, 2007, 05:21:28 PM »
Fanman your doing awesome work.

 Alot of the loading would depend on how fast you allow the blades to spin within your system.The faster the blades spin the more the load.Well thats obvious i guess


 Carry on hope others help.

« Last Edit: July 26, 2007, 05:21:28 PM by vawtman »

dlenox

  • Sr. Member
  • ****
  • Posts: 352
    • PowerDashboard monitoring/logging software for RE systems
Re: tower foundations
« Reply #4 on: August 07, 2007, 09:21:46 AM »
I just purchased a 70' free standing lattice tower from AN Wireless (http://www.anwireless.com) for the 17' diameter wind turbine that I am currently building.  I think that the price that they sell it for (about $3200) is quite reasonable.


On top I will have a 10' stub made from 4" schedule 40 pipe, giving me a total height of 80'.


I paid for an engineering study to ensure that the tower and foundation was good enough and it passed for my application.


They were local enough for me that I was able to pick it up on my car trailer, it comes in 10' assembled sections.  If you go to their website they also have some sample foundation plans as well.


Dan

« Last Edit: August 07, 2007, 09:21:46 AM by dlenox »