Sistemas de aproveitamento da água da chuva em pré-existências (construções multifamiliares)

Abstract

Wasting potable water in cities has a huge influence in disasters caused by floods. The excessive consumption of potable water for uses that can be served with a lower quality water, influence directly in the volume of water available. Using rainwater is considered an alternative to the water from water treatment companies for some uses that do not demand potability. Therefore, the objective of this study is to introduce themethod of rainwater use and to explain about the application in existing buildings. To achieve this, the research involves a literature review about the subject, gathering the main topics referring to the proposed theme. This clarifies the viability of application of the system and its efficiency and presents a comparison showing that the domestic water consumption can be much larger in non-potable uses then the potable ones, proving the waste of this resource. As a conclusion, is possible to confirm the efficiency of rainwater use systems to rationing water resources.