engleski

Integral approach to the design of storm water drainage in the town of Pula

The Town of Pula is one of the largest coastal towns in Croatia which, besides having the lowest average amount of annual precipitations compared to other large towns, has the largest issues with precipitation water drainage. There are several reasons for this – starting with the complex town structure whose specifications have not been adequately respected in the creation of spatial and planning documents, the unplanned construction of urban facilities in natural conditions of occasionally flooded zones and the life-long application of old precipitation water drainage concepts. Simultaneously with the expansion of the town of Pula, which grew much faster than the development of its infrastructural systems for reception, drainage and the disposal of its precipitation waters so too grew its drainage problem with regard to precipitation waters which could not be collected in the capacity limited system of collection drainage constructed in the past. The new drainage concept of the analysed area of Pula, in accordance with modern world trends, has radically changed its existing approach – precipitation waters tend to be kept and, in as large quantities as possible, treated in the place they appear in the watershed. As well as this, the project will present the results of analysis of natural influences that have a dominant importance for the precipitation water drainage procedure – initially the characteristics of the phenomenon of short precipitations and sea level movements as well as their trends. Above all, we have tended to minimise the quantity of precipitation waters by holding them and further infiltrating the terrain. Special emphasis is placed on dislocated solutions of precipitation water drainage in natural depressions of suburban areas and special measures have been taken with regard to the organisation of these areas as well as the need to allocate such an area by means of spatial planning of their provisional retention.

city of Pula; flooding; infiltration; multidisciplinary team; local government regulations; urban stormwater system

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