2018 Annual WASLA Conference

Motif Seattle, March 16, 2018

 

 

11:00 am - 12:00 pm
Street-tree performance in suspended pavements: Tree growth, health, results

Description:

For over 35 years Landscape Architects have designed systems to provide tree soil under pavement, with a range of ideas having different project costs and outcomes. By 2005 it was realized that suspended pavements, where the pavement structure does not rely on the soil designed for trees roots, was likely to be the most efficient approach. There has been continuing testing of these concepts to understand tree growth, health, and the systems contribution to streetscapes, and storm water performance. A strong body of work supporting suspended pavements is emerging.

Lead Speaker:

James Urban, FASLA

Speaker Bios:

James Urban, FASLA, Landscape Architect, Urban Trees + Soils
James Urban, FASLA, Urban Trees + Soils, specializes in the design of trees and soils in urban spaces, and has written and lectured extensively on the subject of urban tree planting. His 2008 book "Up By Roots: Healthy Trees and Soils in the Built Environment", is one of the principle tree and soil references. In 2007 he was awarded the ASLA Medal of Excellence for his contribution the profession of Landscape Architecture. He is the 2013 recipient of the International Society of Arboriculture - Award of Achievement for long-term contributions to their profession.

Learning Objectives:
  • Understand the methodology behind three current options to improve soil for trees under pavement.
  • Review summary findings of current and past research of performance of these options.
  • Learn how to calculate the benefit efficiency of various approaches.