THE EXCAVATION

The excavation must be 30 cm larger on each side (A) of the spill-over. The depht of the excavation (B) must be 15-20 cm more than the height of the shell.

Note: It is very important that the concrete layer of concrete be completely flat.

The pool's perimeter finishing is very important because being a spill-over system it has no coping. For optimum aesthetics, the pool rim should be at the same level as its perimeter finishing.

LEGEND

1. Layer of concrete (15 cm)
2. Geotextile filter
3. Pool shell
4. Control room
5. Sand
6. Gravel
7. Power and water inlets and drainage.