Young Black Haired Girl Strips Her Black Dress On The Roof With A Rainwater Tank

Specially designed rainwater tanks can also be embedded in or under the concrete slab of a building (stab tank).
A house in Cape Schanck Victoria, Australia uses an internal rainwater tank to provide cooling to the living room in summer. During winter the tank is drained and wrapped in an insulating jacket. The tank also provides structural support to the roof, and excess water is used for domestic use including drinking.