Media for Growing Trees Under Pavement: Research and Practice - 1.5 PDH (LA CES/HSW)

Recorded On: 10/30/2023

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This presentation covers how to integrate large urban trees and their associated soil volumes into the densest urban areas. Two research studies compare supported pavement with load bearing modules and structural soil treatments. The researcher, a soil scientist, and a landscape architect present the implications for the profession.

Learning objectives:

  • Learn to identify urban soil conditions and strategies to appropriately address long-term growth of trees.
  • Discuss the latest research on the different kinds of structural soils, their composition, and their benefits and drawbacks.
  • Assess which soils strategies are best to use given the requirements of a particular site.
  • Examine case studies where the use optimum soils strategies had a meaningful impact.

Paul Josey, ASLA


Wolf Josey Landscape Architects

Paul is the co-founder Wolf Josey Landscape Architects and has led a diverse range of city, campus, garden and conservation projects of all sizes throughout the Mid-Atlantic and Southeast. He has specific expertise in urban and campus design, planting soils, tree preservation, construction implementation and native plants of the Piedmont and Coastal Plain.

His earlier design experience as a project manager at Nelson Byrd Woltz and at Urban Trees + Soils in Annapolis also focused on urban, academic and institutional projects while overseeing the master planning and implementation of various award winning mixed use, city park, waterfront and campus projects.

E. Thomas Smiley

Senior Arboricultural Researcher

Bartlett Tree Expert Company

Dr. Tom Smiley is a Senior Arboricultural Researcher at the Bartlett Tree Research Laboratory in Charlotte, NC and a former adjunct professor of Urban Forestry at Clemson University. Dr. Smiley is active in the arboriculture industry and has co-authored many of the ISA’s Best Management Practices. His research has led to improved methods of increasing sidewalk longevity near trees, protecting trees from lightning damage, improving tree root growth, and reducing tree risk.

Timothy Craul, CPSSc


Craul Land Scientists

As a Soil Scientist, Tim Reviews Landscape Architect design documents for conformance to soil properties required for sustainable plant growth, designs and develops soil physical and chemical properties to provide sustainable plant growth including investigation of sites to determine proper specification, handling, and installation of soils for planting and storm water management. Provides construction administration to oversee the installation and conformance to planting soil specifications.
Tim has a book written with Phillip J. Craul called "Soil Design Protocals for Landscape Architects and Contractors" The second edition is currently underway.


Video: Media for Growing Trees Under Pavement: Research and Practice - 1.50 PDH (LA CES / HSW)
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Open to view video.
11 Questions  |  Unlimited attempts  |  9/11 points to pass
11 Questions  |  Unlimited attempts  |  9/11 points to pass Successful completion of this quiz is required to earn PDH for this webinar.
1.50 PDH credits  |  Certificate available
1.50 PDH credits  |  Certificate available
8 Questions
Session Guide
Open to download resource.
Open to download resource.