Posts Tagged: Permeable Pavers

Porous Pavements Myth Busters: Cost

Written By: William G Handlos, P.E. Does a porous pavement solution cost more? Porous pavements actually are less expensive to install than impervious concrete or asphalt when total project costs are considered. When evaluating parking lot construction costs for porous vs. impervious alternatives, the following cost “buckets” must be considered. Traditional pavements such as bituminous asphalt or Portland cement concrete enjoy low cost and ubiquitous installation contractors. This may lead one to think that choosing a porous pavement would lead to higher overall project costs… But that is a myth.   Most everything else about traditional parking lot construction is far more expensive than the porous pavement alternative. Traditional hard-surface pavements require inlet structures, castings and covers for inlets and manholes, underground pipe, outfall structures, and detention ponds. Costs & Maintenance of Stormwater Ponds Detention ponds have three major cost drivers. Land costs to locate a pond can vary wildly depending upon commercial real estate values, but it is not unusual for land to be upwards of $250,000/acre even in small markets. But the impact of the land utilized for detention ponds doesn’t end there. There is the lost opportunity cost for the unrealized rental or income value lost when… Read more »

How Well Do You Know Your Competition? Try Installing Them.

Written by William G Handlos, P.E. Presto Geosystems is the maker of the GEOBLOCK Grass Pavers® family of rigid vegetated porous pavement products. We’ve been manufacturing porous pavements since 1978 and have been a leader in the industry ever since. It’s safe to say we were pretty comfortable with our understanding of the differences between our products and our competitors in the market….or so we thought. We knew our products were premium performers offering the best structural modulus (load spreading snowshoe effect), more structural high density polyethylene per square foot than our competitors, load transfer tabs to assure no separation at joints and an industry-leading warranty. Our competitors on the other hand  go with much lighter density product design and some offer their products on rolls like carpet or rolls of sod.   We knew a product that comes on a roll was not a very effective load transfer device. After all, the whole point of vegetated porous pavement is to protect the topsoil (and therefore the root system) from damaging compressive forces and to transfer those forces to the layer below the topsoil – preventing rutting and offering a stable riding surface for fire lanes, overflow parking, or occasional… Read more »