[header] How to build a concrete pool [title] Mark out and excavate the area of the yard to install the concrete pool. [step] The hole should be dug approximately 9 to 12 inches (23 to 31 cm) deeper than you want the depth of your pool, to allow room for surfacing the bottom of the basin. A lip is also left around the perimeter of the hole to accommodate sufficient working room for placing forms. 
[title] Install plumbing, using pvc pipe and strong bonding material. [step] Your plumbing should include a drain at the bottom of the pool as well as the necessary structure to ensure safe water flow throughout the pool.