The construction process typically has to reconcile what’s on plans and specifications to what actually can be built in the field. This presentation helps close that gap for the construction of permeable interlocking concrete pavement (PICP). Introduced from Germany to the U.S. in the mid-1990s, PICP has seen extensive use in parking lots, alleys, and streets to reduce stormwater runoff and pollution. This presentation connects two key industry documents, CMHA Tech Spec 18 on Construction of PICP to a more recent document, PICP Construction Tolerances. The presentation visualizes dimensional tolerances as the pavement is being built and on-site tests to verify same that can be conducted during the PICP construction process. This helps close the gap between what’s on paper to what’s doable in the field. The presentation provides via a realistic view and meaning behind attaining quality control and quality assurance by contractors who following PICP specifications. The result can be PICP structures that last for decades.

David Smith, Technical Director for CMHA. David has been involved with permeable pavements since 1977. He’s designed, built, written about, and presented on PICP nationally and internationally.

CE Hours: Eligible for 1 Hour of Continuing Education upon completion of online quiz. Applicable for renewal of Certified Concrete Paver Installer (CPI) certification & Segmental Retaining Wall (SRW) certificate.