Swimming Pool Main Drain Construction With Membrane And Concrete Base

This drawing presents the construction detail of a swimming pool main drain system, showing the installation within a reinforced concrete pool base. The layout illustrates the drain cover and clamping device fixed at the pool floor surface along with gasket sealing to ensure watertight performance. The drawing also shows the Sarnafil membrane adhered waterproofing layer and the Sarnafelt NWP protective membrane applied over the concrete substrate. These layers protect the structure and maintain proper sealing around the main drain assembly. The sectional representation clearly explains how the drain body is embedded into the concrete base and connected through grout filling to stabilize the system.