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ASCE webinars are great for us. We are in a remote location and it is difficult to get quality training for our staff without much expense.  Anonymous Attendee

Instructor: David K. Hein, P.Eng.

Course Length: 1 Hour

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.

In the Fall of 2016, the ASCE T&DI Permeable Pavements Committee is expected to ask for public comment on a consensus standard for the design, construction and maintenance 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

• Introduction to porous asphalt, pervious concrete and permeable interlocking concrete pavements
• Live case study that discusses parking lot and roadway design
• Highlights from the soon to be released ASCE consensus standard 
• Permeable pavement design software

Learning Outcomes

Upon completion of this course, you will be able to:

• Determine common design and construction features important to the performance of permeable pavements
• Recognize 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

Assessment of Learning Outcomes

Students' achievement of the learning outcomes will be assessed via a short post-assessment (true-false, multiple choice and fill in the blank questions).

Intended Audience

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

Webinar Outline

• Subgrade preparation
• Characterization of design traffic
• Base and subbase materials
• Design details for structural capacity
• Design details for hydrological capacity
• Construction guidance to ensure permeable pavement success
• Key permeable pavement maintenance procedures

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