Historical
IAPMO IGC 158-2000
Fiberglass reinforced plastic pool shells
This interim guide criterion applies to FRP pool shells whose bottom is fully supported by soil or thestructural system of the building in which it is to be installed. The sides of these types of pool shell aredesigned to span from the bottom to an FRP bond beam positioned around the perimeter at the top ofthe pool shell.
International Association of Plumbing and Mechanical Officials [iapmo]