Resources
Monitoring and Cleaning PICP in a Cold Climate
Recipient: Toronto and Region Conservation Authority (TRCA)
Grant: $10,000*
PI: Tim van Seters
Completion: 2016
Project Summary: 10
Background and Need
This study of permeable pavements was conducted over five years at a research facility constructed by TRCA in 2009 at the Kortright Center visitor’s center parking lot in Vaughan, Ontario. The site consists of four 230 to 233 m2 pavement cells. Two cells are constructed with PICP, one with narrow joints and another with wider joints filled with open-graded aggregates. Another cell was constructed with pervious concrete (PC) and another with impervious asphalt. The purpose of the study was evaluating the long-term volume and pollutant reductions, geotextile performance, surface clogging and cleaning. Each permeable pavement cell is drained by a perforated pipe. The asphalt cell is surface drained via a catch basin in the center. Concrete curbs between cells prevent inter-mixing of
flows
Better Testing and Design Guidelines for PICP
Recipient: University of Missouri-Kansas City, Kansas City, MO
Grant: $112,519
PIs: John Kevern, PhD and Jerry Richardson, PhD
Completion: 2016
Project Summary: 9
Background and Need
While PICP has structural and hydrologic design components, there is no overt design for transmittal of the stormwater across and through the pavement surface.
Supporting Landscape Architects Need for Landscape Performance Instruction at Universities
Recipient: Landscape Architecture Foundation
Grant: $25,000
PI: Heather Whitlow
Completion: 2015
Project Summary: 8
Background and Need
The Landscape Architecture Foundation maintains a website with tools and models that assist practicing landscape architects in measuring economic, environmental and social performance of landscape systems. In addition, the LA Foundation maintains a growing stable of project case studies demonstration how performance is measured.
PICP Works in Low-Infiltration Clay Soils
Recipient: North Carolina State University.
Grant: $10,283
PI: Alessandra Smolek
Completion: 2015
Project Summary: 7
Background and Need
Contrary to opinions held by some, clay soils infiltrate which makes them eligible for use under PICP. This project provided data to support volume and pollutant reductions over a small PICP site with clay soils (hydrologic soil group D) in Durham, North Carolina.
Full-Scale Load Testing of Permeable Interlocking Concrete Pavement (PICP)
Recipient: University of California (Davis) Pavement Research Center
Grant: $190,350*
PIs: John Harvey, PhD, David Jones, PhD, & Hui Li, PhD
Completion: 2014
Project Summary: 6
Background and Need
Prior to this research, PICP structural design relied on the flexible pavement design method in the 1993 AASHTO Guide for Design of Pavement Structures. While this design method was developed and validated with full-scale testing for impermeable road pavements, it was adapted by ICPI to use for PICP for subbase thickness design tables up to one million 18,000 lb equivalent single axle loads
or ESALs. Coincidentally, Caltrans was writing a guide on permeable pavements and this presented an opportunity to include information on PICP structural design.