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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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Term of the Road Dictionary

time of concentration

Language : PIARC Road Dictionary / English
Theme : Roads Drainage and Sewerage
Definition : Time required for rainwater falling at the remotest point in a catchment area to reach the point of concentration where the rate of flow is to be calculated.

Konzentrationszeit

Language : PIARC Road Dictionary / German
Theme : Straßen Straßenentwässerung
Definition : Zeit, die Regenwasser vom entferntesten Punkt des Einzugsgebiets bis zu der Stelle benötigt, an der es zusammenläuft und an der die Abflussrate berechnet wird.