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Introduction to Permeable Pavement Design

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Purpose and Background
Storm water management is a key component of urban infrastructure design. Numerous agencies throughout the United States and Canada include permeable pavements as a key component of best management practices for stormwater management.

If properly designed and constructed, permeable pavements can help rainwater infiltrate soil, decrease urban heating, replenish groundwater and reduce overall storm water runoff. The construction of permeable pavement systems that can accommodate surface water runoff is gaining increasing attention through the Leadership in Energy and Environmental Design (LEED) program.

In a 1999 stormwater technology fact sheet on porous pavements, the U.S. Environmental Protection Agency (EPA) indicated that porous pavements traditionally have a failure rate of over 75 percent. Generally, failure is attributed to poor design, inadequate construction quality, improper treatment of the subgrade soils, and overloading of under designed pavements. Recent studies in the United States, United Kingdom, and Australia have shown the significant benefits of permeable pavements.

This webinar provides background on the key features of permeable asphalt, concrete and interlocking concrete block pavements along with guidance, design tools and methodologies to assist in designing pavements to accommodate hydrological and structural pavement design for municipal and parking area permeable pavements and compare equivalent structural designs.

Primary Discussion Topics/Webinar Outline

  • Introduction to porous asphalt, pervious concrete and permeable interlocking concrete pavements
  • Site suitability analysis
  • Key factors for successful design
  • Live case studies that discuss parking lot and roadway design
  • Permeable pavement design software

Learning Outcomes

  • Understand common design and construction features important to the performance of permeable pavements.
  • To understand the impact of permeable pavement design features.
  • Communicate and promote sustainable pavement design and construction.

Webinar Benefits

  • Understand the key input parameters for the successful design of permeable asphalt, concrete and interlocking concrete block pavements.
  • Ability to design a permeable pavement for both structural and hydrologic capacity.
  • Utilize previously impervious infrastructure to reduce the impact of peak stormwater runoff and improve stormwater quality.

Webinar Outline

  • Subgrade preparation
  • Characterization of design traffic
  • Base and subbase materials
  • Design details for structural capacity
  • Design details for hydrological capacity

A live case study follows the presentation, discussing the design of a parking lot and a roadway using a software application developed specifically for permeable pavement design. Design details include:

  • Determination of design traffic
  • Analysis of subgrade support capability
  • Analysis of rainfall intensity
  • Site drainage analysis
  • Appropriate selection of base and subbase aggregates

 

Supplementary pavement surface and subsurface drainage

Who Should Attend

  • Engineers involved in urban infrastructure design
  • Landscape architects
  • State DOT and municipal agencies
  • Stormwater professionals
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COURSE CREDIT

Almost all of EPIC's seminars and webinars offer :

  • Continuing Education Units (CEUs) and
  • Professional Development Hours (PDHs)

These course credits will help attendees earn training requirements for their associations or provincial governing bodies.

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