ICPI Issue 2 2019

 Continued from page 8

project, with non-permeable pavers used in intersections and entryways into service alleys, says Martin. The concrete pavers were supplied and installed by ICPI members. “City representatives requested pavers over asphalt anywhere that vehicles turned to reduce any risk of pavers shifting,” he explains. PICP was chosen for the roadway to reduce runoff and flooding while improving quality of the stormwater. “In the roadway, the permeable and non-permeable pavers are 80 mm thick,” says Mr. Martin. Three colors of pavers are used in the herringbone and circular patterns in the project. “The design originally specified a 7/8 inch (22 mm) bed of ASTM No. 8 stone, over

The street includes non- permeable and permeable sections to reduce runoff and minor flooding.

COVER STORY

Issue 2 • 2019 ® esign interloc 9

A cross section of the street showing the intersections with an asphalt base and the PICP with open-graded aggregate that eliminated nuisance flooding on the flat street.

A cross section of the pedestrian pavement showing the differences between the permeable and non- permeable pavements.