When we stack a big self support lattice tower, we usually stick build
the bottom section (with a small boom truck) right onto the anchor
bolts. On big towers each leg has climbing pegs on the lower sections,
which makes this feasible.
Then the rest of the tower gets assembled horizontally in 60' to 100'
sections using the boom truck and ladders. I'm talking 25' face sections
here.
Then the big crane comes in for a day to stack the whole thing.
Paul might consider this method, as the slop in member holes should
allow assembly even with the slight misalignment of the anchor bolts.
A couple of nice long bull pins will be handy of course.
-Steve K8LX
On 7/24/2017 10:20 AM, Jim Thomson wrote:
## Thats a monster tower project he has taken on....and two of em. It would
almost require a small crane to
assemble the tower in the horizontal position..then a monster crane to lift it
upright to the vertical position, then
lift, swing..and lower onto the myriad of 1.875 inch base bolts. This is
where you want multiple deep sockets,
open + box end wrenches, tq wrenches, loads of help, etc. Both my 1.625 and
also 1.8125 sockets, both deep types,
are the .750 drive variety. I used a .500 to .750 drop in adaptor, so I could
use my .500 tq wrench and also my
.500 corded electric and also .500 air impact wrenches. You can also buy
cordless tq wrenches with up to 600-700
ft lbs of tq. Great when the commercial AC power goes out.... or you are up
the tower...and dont want to drag an
extension cord ....or air hose with you.
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|