Permeable Paving Installation In Cleveland, OH
There are three categories of permeable pavements available to businesses and municipalities in the Cleveland area: porous asphalt, pervious concrete, and TrueGrid-style grid pavers. "Pervious," "porous," and "permeable" tend to be used interchangeably in the industry to describe pavements capable of delivering moisture through the pavement into the sub grade beneath.
Porous concrete is essentially identical to normal PPC concrete, but lacks the fine aggregate content that would otherwise keep moisture from moving through the material. These gaps, combined with gravity, slowly pull water through the pores and filters it into the sub grade, or dirt, below. Porous concrete, with regularly scheduled maintenance, will last about 20 years. Porous concrete can also be made from recycled materials.
Pervious, or porous, asphalt is a little more complicated. A pervious asphalt system has an open-graded asphalt surface and a stone bed beneath. Water drains through the surface layer, is collected in the stone recharge bed, and then drains slowly over time through a non-woven geotextile fabric designed to keep the system from separating over time. Pervious asphalt systems also last 20 years or more with the right amount of maintenance. Click to see a cross section of a pervious asphalt system.
TrueGrid technology uses structurally sound geometry to pave surfaces, one section at a time. The area is first excavated to the desired depth, a geotextile fabric is installed, stones with a ~40% void range are poured to the surface, and TrueGrid pavers are installed to create an even surface for driving and walking. TrueGrid makes unstable soils more accessible for development, as sagging is reduced and there's no to account for significantly heavy equipment by the paving or construction company.
Advantages Of Using Permeable Paving
These innovative technologies are significantly more environmentally friendly in their ability to recharge subsurface earth with storm water otherwise blocked by traditional asphalt or concrete. This helps reduce flooding, accelerated erosion in stream channels, and the distribution of pollutants into public waterways by taking advantage of soil's natural ability to retain moisture. There are also significant financial benefits to going green, in some cities and states more than others.
Cost Savings By Going Green
Although pervious parking lot solutions cost more to install than standard asphalt or concrete- approximately 10-20% more per square foot, to be precise- costs over time will net you or your institution savings through reduced storm water maintenance system payments, and in some areas, tax breaks by the city or state government via green initiatives. Property owners looking to integrate permeable pavements may be eligible for LEED certification, which comes with a number of advantages including higher property values, faster lease-up rates, and in some jurisdictions, tax rebates and zoning allowances.
One particular case study in New Hampshire revealed a net savings in costs of $930,000 when comparing a hybrid permeable paving, gravel, and asphalt project to a traditional asphalt parking lot project. Savings largely came from the drastically reduced cost of excavation, and the reduced need for drainage management- which was still partially necessary because the sub grade was mostly clay, requiring water to be rerouted to a more suitable location. This same project was tracked over the course of three years after installation and was in condition comparative to that of what would be expected from a standard asphalt parking lot.
If you are considering repaving or building a new sidewalk, patio, driveway, parking lot, or low-traffic roadway, we suggest using a permeable paving solution through Ohio Paving & Construction. For a free on-site consultation, contact our talented paving experts below.