09-15-2019, 10:53 PM
ElysianWort, I have made several pools as described by you, the first one was for myself about 20 years ago and is still looking like it has several years left, even after disassembling it once and moving it. None of the others have failed. Just a few points to add:
The un-corrogated roofing is usually about 3.5' wide, so your pool will be 3.5' high. The length can be adjusted to meet your required diameter. Diameter is dictated either by liner size or space limitations. For my first one I just wanted to use 20'x20' black plastic, so I made the pool 12' wide (38' of roofing, in a roll that will fit easily in your PU bed). 12' dia + (3.5' h x 2) = 19' and allows for 6"" of overhang on the outside of the tank. You will gain a few helpful inches when you round the bottom corners with sand on the inside where the metal meets the ground. If it's going to be in a permanent location it's worthy of a concrete ring foundation.
When you order the roofing have them put 180 degree bends in opposite directions on the ends. Minor expense. These will hook together and form a stronger joint. Use stainless steel bolts. You can slice an old garden hose lengthwise and slip it onto the top edge of the metal to protect the liner as it folds over.
This system is very flexible, but the 12' size is good for about 2500 gallons.
I swapped out the black plastic for a food grade liner, fortunately it's a standard size. Others that were custom fit were pricier. Even so, this is a very cost effective system.
The un-corrogated roofing is usually about 3.5' wide, so your pool will be 3.5' high. The length can be adjusted to meet your required diameter. Diameter is dictated either by liner size or space limitations. For my first one I just wanted to use 20'x20' black plastic, so I made the pool 12' wide (38' of roofing, in a roll that will fit easily in your PU bed). 12' dia + (3.5' h x 2) = 19' and allows for 6"" of overhang on the outside of the tank. You will gain a few helpful inches when you round the bottom corners with sand on the inside where the metal meets the ground. If it's going to be in a permanent location it's worthy of a concrete ring foundation.
When you order the roofing have them put 180 degree bends in opposite directions on the ends. Minor expense. These will hook together and form a stronger joint. Use stainless steel bolts. You can slice an old garden hose lengthwise and slip it onto the top edge of the metal to protect the liner as it folds over.
This system is very flexible, but the 12' size is good for about 2500 gallons.
I swapped out the black plastic for a food grade liner, fortunately it's a standard size. Others that were custom fit were pricier. Even so, this is a very cost effective system.