[TowerTalk] AB-105 assembly

[K7LXC@aol.com]

In a message dated 07/24/2000 10:30:54 AM Pacific Daylight Time, 
nj4f@erols.com writes:

> If you pre-assemble it on the laying on the ground, as a complete tower,
>  unless the ground is perfectly level, the tower will by crooked when it is
>  raised by crane.

    If you're going to build it one-piece-at-a-time the only section that you 
*really* need to have level/plumb is the bottom section and everything will 
be FB. This is actually not a bad way to do it. You need two guys on the 
tower and it goes relatively fast. I prefer this method since you have to 
assemble the sections at some point anyway and this way you avoid the 20-30 
minutes per section for plumbing as well as the crane or ginpole time and 
cost. 

    If you want to build it on the ground, you'll need a flat, level surface 
like a driveway. You need to drop a plumb line down through the tower; I use 
some string with a wrench or other heavy weight on the end. (A "T" made from 
thin pieces of wood that will sit on top of the legs with the string attached 
to the middle makes it easy to use and then remove. A step ladder is 
required.) You sight through the tower face, through the string to the edge 
of the opposite leg. Have your helper hold the legs in place while you 
slightly tighten the nuts. When you've got that pretty well done, then go 
back and tighten everything. It'll take you 20-30 minutes per section to do 
this. Then you can put several sections together for the crane to pick up.

Cheers,   Steve    K7LXC
Tower Tech

--
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com