We have a chart for that!
It is commonly recommended by above ground pool manufacturers to have a 2" sand base inside the pool, under the liner.
This will help protect your liner, and provide a soft floor that provides comfort while walking in your pool. Always use masonry sand, which is a washed sand, free of rocks and debris. This is widely available for delivery from earthworks, and landscaping centers.
For reference, we have provided a chart of sand requirements for common pool sizes below but for extra installation tips for above ground pools using a sand base see this link!
The actual amount used in the pool may vary depending on the excavation and liner type used. See the base order of operations image below the sand chart.
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