“We are seeing more provincial, state and local permeable pavement specifications require surface infiltration tests to accept new permeable pavements and to evaluate their in-service infiltration for determining surface cleaning,” says Craig Walloch, chair of ASTM Subcommittee C15.04 on Research who helped develop the standard. “Now they have a method with specific guidance for testing unit paving with results that can be compared to that from pervious concrete and porous asphalt.” Walloch further noted that existing guidelines published by stormwater agencies have used C1701 to test surface infiltration of permeable unit paving. While the results from that test method applied to permeable unit pavement are useful, C1781 provides clear guidance on executing the test on these pavements.
To purchase and download C1781 from ASTM, visit
www.astm.org/Standards/C1781.htm. The standard retails for $42 and ASTM members receive a 10% discount. For further information on permeable interlocking concrete pavement design, construction and maintenance visit the Interlocking Concrete Pavement Institute at
www.icpi.org.