Installation guide grasspave2 porous grass pavement. The study of porous asphalt pavement with emphasis in road. Design porous pavements that infiltrate stormwater, protect turf and resist the stresses of h20 occasional traffic loading. Permeable pavement fact sheet information for howard county. Bituminous material shall be pg performance grade pg 6422. The porous pavement curve number thomas ballestero, pe, phd, ph, cgwp, pg, federico uribe, robert roseen, pe, phd, d. Porous pave is a pourinplace permeable paving material that is highly porous, flexible and resilient. Through this movement, pervious concrete mimics the natural process that occurs on the grounds surface, consequently reducing runoff and returning. An introduction to permeable pavement alternatives march 2007 the university of rhode island cooperative extension, in partnership with the rhode island department of health, source water protection program. Porous pavement porous pavement also known as pervious or permeable pavement is a specific type of pavement with a high porosity that allows rainwater to pass through it into the ground below. The pavement structure is composed of an 810 cm thick surface layer. Porous options include geoblock turf protection, geopave stabilized aggregate and filterpave, architectural pavements made with recycled glass. S1 2360 hot mixed asphalt porous pavement combined 2360.
Pilot porous pavement street for city of seattle integration of redevelopment into existing neighborhood traffic calming provide service for residential street loading condition infiltrate the 6month storm event for the roadway section only reduce the existing developed peak flow rate up to the 2year storm event. Pdf permeable pavement design and construction case. Durable porous pave can be used in parking lots, driveways and other high use applications. Cip 38 pervious concrete the proper utilization of pervious concrete is a recog. Permeable pavements are hard surface paving systems that reduce stormwater runoff flows and improve runoff water quality. If the porous pavement system is built over nonporous soils and an excavation is required such that water could be trapped, sub drainage becomes a required component of the system. The purpose of this study is to investigate the performance characteristics of porous. It is the responsibility of the owner to maintain the pavement in accordance with the minimum design standards. Subdrainage will remove harmful water accumulation that will. Construction of porous asphalt pavement using graphene s aravind1, a joshi isac2, s aparajith3 1,2,3 civil engineering department, mookambigai college of engineering, kalamavur abstract. Guidelines on construction and maintenance of porous. Types of permeable pavement numerous types of permeable pave ment are available.
The location of porous pavements should be considered early during the design process. The study of porous asphalt pavement with emphasis in. Reflect a design vision with attractive, ecofriendly and economical porous pavement solutions. Construction issues for porous cement concrete pavement. Porous asphalt pavements california coastal commission. Porous asphalt pavement next to impervious pavement. Hein and others published permeable pavement design and construction case studies in north america find, read and cite all the research you need on researchgate. If the porous pavement system is built over non porous soils and an excavation is required such that water could be trapped, sub drainage becomes a required component of the system. To provide objective information about permeable pavement for howard county, maryland homeowners who may wish to install or retrofit a permeable pavement driveway, patio or sidewalk on their property. Understand the basic components of the three most popular permeable pavement systems.
Install turf when ambient air temperatures is at least 55 degrees f degrees c. How to build a permeable pavement with a porous concrete overlay. Pdf permeable pavement design and construction case studies. Unhsc design specifications for porous asphalt pavement. The cost of pervious concrete may be 15 to 25 percent higher than conventional concrete, but cost can vary significantly depending on the. Greening the urban environment 2528 september 2011 1. Design and construction of a porous asphalt stormwater bmp retrofit an epa education and outreach project r. Wre, james houle, cpswq university of new hampshire stormwater center university of new hampshire philadelphia low impact development symposium. Permeable pavement combined minnesota stormwater manual. Successful construction starts from the ground up literally. Design and construction of porous asphalt pavements.
Permeable pavement fact sheet information for howard county, maryland homeowners. New jersey stormwater best management practices manual. Any qualified asphalt pavement contractor can construct such pavements and virtually any asphalt plant can produce the material. Regular inspection and maintenance guidance for porous.
Method for installation varies place from chute, wheeled or by conveyor no trowels or floats cover immediately after placement voids enhance drying. It is an important application for sustainable construction. Cahill associates has been involved in the design and construction of more than 200 porous. Virginia department of transportation david branscome branscome paving company michael fitch, ph. Stormwater seminar october 17, 2007 permeable paving. Use of porous asphalt for pavement construction vinayak somawarad1,irfan sanni2, rashmi j. The geopave porous pavement system components the geopave porous pavement system with aggregate or an aggregatetopsoil engineered infill provides a permeable, stabilized surface for vehicular and pedestrian load support.
S1 2360 hot mixed asphalt porous pavement the provisions of the attached combined 23602350 gyratorymarshall design specification of these special provisions is hereby modified as follows in order to use the porous pavement as part of providing for storm water treatment. Porous pavements regular inspection and maintenance is critical to the effective operation of porous pavement. Additional site considerations include soil types, depth of bedrock, pavement slope, and additional sources of runoff. Porous pavement is a waterpermeable structural groundcover that. At the dupont barley mills office complex in delaware, the porous pavement was constructed specifically to avoid the construction of a detention basin, which would have destroyed the last wooded portion of the site. The void space created by the stone reservoir provides storage for surface runoff on generated or diverted onto the porous surface. Cahill associates has been involved in the design and construction of more than 200 porous asphalt pavements since the 1980s and have reported no failures of pavements for which proper design and construction practices were followed. Above the uncompacted subgrade is a geotextile fabric, which prevents the. Porous pavement is a waterpermeable structural groundcover that infiltrates. This guidance considers pervious concrete pavement pcp, pervious asphalt pavement. Porous pavement is a special type of pavement that allows rain. If the subgrade is to be compacted, infiltration testing should be conducted during design of porous pavement to adequately account for reduced soil permeability. Design and contruction of a porous asphalt stormwater bmp.
As the use of permeable pavement increases in north carolina, prac titioners can. Lowimpact pavement solutions reduce storm water runoff and contribute to leed green building credits. Porous asphalt pavement wisconsin asphalt pavement association. Permeable pavement fact sheet information for howard county, maryland homeowners purpose of this fact sheet. Porous pavement sr 234 park and ride lot fall asphalt conference richmond, va david shiells, p. Cross section of typical porous asphalt pavement with stone reservoir image courtesy of fhwa unlike conventional pavements, porous asphalt pavements figure 1 are typically built over an uncompacted subgrade to maximize infiltration through the soil. Note the pdf is a static document and does not reflect changes made since the pdf was created on september 25, 2018. The porous pavement curve number villanova university.
Subdrainage will remove harmful water accumulation that will cause degradation of the insitu soils resulting in loss of support capacity. Unhsc design specifications for porous asphalt pavement and. Both hydraulic and structural design of pervious concrete pavements are discussed, as well as construction techniques. With proper design and installation, porous asphalt pavements can provide a cost. Pervious pavement is designed primarily to promote stormwater infiltration and improve the quality of stormwater runoff. Porous pavement is a pervious trafficbearing surface placed over a stone reservoir which is, in turn, underlain by highly permeable soil. During rain and snowmelt, water drains through the porous asphalt pavement, into the rock base, and then infiltrates into the soil where the natural processes that cleanse water can begin. To keep the system clean throughout the year and prolong its lifespan, the pavement surface should be. Many porous pavements have been constructed since the late 1970s. If clogging occurs in porous pavement and the surface infiltration rate is reduced lower than the rainfall rate, then either water will pond or runoff will be produced. The porous asphalt pavement specified herein is modified after the national asphalt pavement association napa specification outlined in design, construction, and maintenance guide for porous asphalt pavements, information series 1 2003 and design, construction, and.
Models for predicting the performance of these pavement systems need to be developed for use in design, pavement management, and lifecycle cost analysis lcca. These pavements, used mostly for parking lots, allow water to drain through the pavement surface into a stone recharge bed and infiltrate into the soils below the pavement. Uses of pfc pfc can be used in new construction, major rehabilitation projects, and maintenance overlays 3. Guidelines on construction and maintenance of porous friction. Construction guidelines constructing porous asphalt pavements is straightforward.
Contrary to conventional construction pavement siting, po rous pavements. Porous pavements have an opengraded surface over an underlying clean open graded rock base. Contrary to conventional construction pavement siting, porous pavements perform best on upland soils cahill et al. Construction porous pavement is to be protected from fines infiltration during. Virginia center for transportation innovation and research vctir october 8, 20. Contrary to conventional construction pavement siting, porous pavements perform best on upland soils. Pervious concrete is traditionally used in parking areas, areas with light traffic, pedestrian walkways, and greenhouses. Design and construction of porous asphalt pavements foothills trail, south prairie albany remodel, tumwater wsu lid center, puyallup annalese heights, rainier slide 2 wsu puyallup technical workshop seriespermeable paving design may 17, 2011 porous. An ecofriendly green building product made in the u. Pilot porous pavement street for city of seattle integration of redevelopment into existing neighborhood traffic calming provide service for residential street loading condition infiltrate the 6month storm event for the roadway section only reduce the existing developed peak flow rate up to the 2. This techbrief presents an overview of pervious concrete and its use in.
Hamjian epa new england, nov 2012 hurd field, arlington, ma. A typical porous pavement has an opengraded surface over an underlying. Porous asphalt pavements offer developers and planners a new tool in their toolbox for managing storm water. Adapted by the california coastal commission, march 2007. Porous asphalt pavements with stone reservoirs fhwa. Porous asphalt pavements allow for land development plans that are more thoughtful, harmonious with natural processes, and sustainable. The study of porous asphalt pavement with emphasis in road construction design mr. The porous asphalt pavement specified herein is modified after the national asphalt pavement association napa specification outlined in design, construction, and maintenance guide for porous asphalt pavements, information series 1 2003 and design, construction, and maintenance of opengraded friction courses, information series 115 2002. In addition, pervious concrete can contribute toward credits in the leed leadership in energy and environmental design rating system for sustainable building construction ashley 2008. Do not begin installation of porous pavements until all hard surface paving adjacent to porous pavement areas, including concrete walks and asphalt paving, is completed. Prestos geoblock system is a series of highstrength, interlocking, rigid pavers with unparalleled load distribution, and greatest turf protection with minimal base. Porous pavement operation and maintenance protocol general maintenance the primary goal of porous pavement maintenance is to prevent the pavement surface andor the underlying infiltration bed from being clogged with fine sediments.