31+ Typical Inground Pool Size PNG. Typical swimming pool dimensions are 10 x 20, 15 x 30, and 20 x 40. If you're not sure how big of a pool you need, looking at what's popular is a good place to start.
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They're also typically less expensive than a normal sized pool in most markets. I build lots of ingrounds every year and always put the pumps and filters at the house and in some cases return lines are 150 feet away and all of. These pools are ideal for occasional use. An in ground pool will have 2 skimmers and a main drain so that is 42 gallons per min x 3.