PRAÇAS, PARQUES E PASSEIOS PARA AMORTECER ENCHENTES URBANAS: PLANILHA ELETRÔNICA PARA DIMENSIONAR REVESTIMENTOS POROSOS

Abstract

Designing park, square and walk-pavement drainage systems offers great opportunities to ‘capture’ rainfall water near to precipitation sites, either through local soil infiltration, or stormwater reservation basins. The faster urban infrastructure designers and Architects perceive this, the easier for implementing sustainable urban development. In fact, retention of rainfall waters upstream at hydrologic catchments is crucial for reducing surface flood volume and peak at downstream inundation-prone sites; recharging underground-water reserves, and busting water retention upstream – either in the channels, underground, or inside purpose-built reservoirs. This paper presents a simple method for designing drainage systems for parks, squares, walking areas or sport-court surfaces based on a purpose-built electronic spreadsheet. It considers peak attenuation by underground infiltration through porous soils with vegetation, porous pavements and different porous substrata, or by low-slope surface flow. The spreadsheet can compute surface volumes leaving a drainage-area outlet for proposed combinations of covering layers and design rainfall events.

 

 

Index Terms - Permeable pavement, green microdrainage, urban infrastructure, underground stormwater retention, sustainable urbanisation.