Above Ground Pool Installation Wall Collapse? We are trying to install an above ground pool. We got...

We are trying to install an above ground pool. We got the alumimum walls installed within the track, and the support posts attached. When we tried to install the liner, the walls collapsed. We set up the walls a second time, but had to give up your job it overnight without installing the liner. The walls collapsed again, even short the weight of the liner. What could we be missing i.e. causing the walls to be so fragile? We are slightly sure the ground and the posts and channels are horizontal.
Was there a bonnet to put around the top? or does it go on after the liner.


Sounds resembling you are missing the cap.
You shouldn't put up the entire wall prior to the liner. Do just about 1/4, then give the liner. Then continue this course until done. At each post add on the liner & cap.
OR. Get a few more ethnic group to steady the wall as 1 or 2 install the liner
Answers:    Yea the cap go on after the liner.
Get some brick mason's string blocks. Drive stakes around the perimeter of your pool, in the order of five or six feet away. Hook the string blocks over the top of the side of your pool, and tie the string to the stake. This should save enough outward pressure on the wall, and liner, to support it until you supply water. Move them out of the passageway, as you go around next to the liner, and replace them as you move on.