SAND UNDER POOLS

Size Tons
18 1.5
24 2
28 3
28 exp 3.5
32x16 2.5
40x16 3
41x21 4
41x21 exp 4.5

1 yard equals 2600 lbs.
Sand should be spread and tamped, not more than an inch thick.
Use a Masonary Wash sand