Evacuación de aguas en el marco del CTE: un enfoque prestacional

Abstract

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This documents is the first one of a series of essays aiming at approaching different building issues relating to systems through a performative design method. A few years after the CTE approval in Spain, performative design is both a challenge and an opportunity to those of us working in the building realm. A challenge, because we are aware of the difficulties implying the thorough understanding of the physical phenomenons linked to the systems and an opportunity because we now know that many projects will not be approached successfully through different means. Quantification, the biggest obstacle for the correct implementation of performance based design, has a very accurate definition in the evacuation of rain water: the isoyet map and pluviometry areas constituting appendix B of the DB-HS5. Nevertheless, this clarity does not exist in the evaluation of the sewage waters, based in the known system of Discharge Units (UD), en empirical procedure, that although it has a widespread use, it can present some inconveniences if it is not properly applied. Due to these facts and because of the simplicity of these systems in front of others, it seems appropriate to beginning this series with them.