Wild abfließendes Wasser in urbanen Gebieten (WAWUR)
Projekt
Überblick
Beschreibung
The negative impacts of heavy rain are increasing due to both changes in precipitation patterns and the rising vulnerability of buildings at risk. The negative consequences of heavy rain depend on the physical vulnerability of buildings, i.e. on the potential of exposed materials and structures to be harmed and to suffer damage. Heavy rain events are often highly localised. Therefore, the estimations of their probability and magnitude are challenging. Heavy rain affects buildings both directly and indirectly. First , engineering surveys have proven the broad variety and high physical vulnerability of building constructions and their connections that are directly affected by invading water during heavy rainfall events. Following the studies, heavy rain is identified as the most important moisture source that affects e.g. the hygrothermal performance and durability of building façades or leads to interior damage due to water penetration. The paper explores the most frequently affected construction elements as well as the most important damage mechanisms. Second , outside mountainous areas heavy rainfall events may lead to pluvial flooding depending on the local topography and the capacities of the urban drainage infrastructure. Pluvial floods are predomin
