Cities are grappling with storm water run-off more than ever as storms become more violent and development increases leaving less permeable land. In heavy rains, sewers sometimes aren’t able to handle the downpour that might happen (think Toronto in July, 2013, or Montreal, May, 2012). Encouraging more permeable areas allows the ground to absorb water helping to alleviate some of the pressure on sewer systems. Sometimes, however, finding the right solution to increasing permeability can be a challenge. Laying down loose gravel over ground makes it difficult to plow in winter, while small stones get caught in pedestrians boot treads get dragged indoors and ruining floors. Another challenge is that sometimes permeable paving needs a strong, impermeable base so that the blocks don’t crack under the weight of vehicles or develop ruts in the most heavily traveled areas. It kind of defeats the purpose of permeable pavers.
A great product originating in Germany, is Ecoraster, a grid system that is used to keep surfaces permeable. It can replace paved parking lots, driveways, pathways and can be used in various agricultural applications as well. The Ecoraster is available in different levels of durability depending on intended use.
It is an extremely versatile product and can be used in a variety of urban situations.