My 5 year old 18' Intex ultra frame is rusting out bad: 
It doesn't help that it's a salt water pool and I do keep it up year round here in Massachusetts.
All I need replaced is the frame, but It's cheaper to buy a new pool than buy all the parts to replace the metal frame.
So I was thinking about replacing the metal frame with 1-1/2 PVC which would only cost about $140 in parts.
My questions are:
1) Is it strong enough to hold 7,000 gallons of water?
2) My pool is octdecagon(18 sides) which equals 20 degree angles, but pvc elbows come in 22.5 degrees...will 1-1/2 pvc bend 2.5 degrees per side(about 35")?
Thanks for the help!
Bob

It doesn't help that it's a salt water pool and I do keep it up year round here in Massachusetts.
All I need replaced is the frame, but It's cheaper to buy a new pool than buy all the parts to replace the metal frame.
So I was thinking about replacing the metal frame with 1-1/2 PVC which would only cost about $140 in parts.
My questions are:
1) Is it strong enough to hold 7,000 gallons of water?
2) My pool is octdecagon(18 sides) which equals 20 degree angles, but pvc elbows come in 22.5 degrees...will 1-1/2 pvc bend 2.5 degrees per side(about 35")?
Thanks for the help!
Bob