Active Standard: C1781 / C1781M - 13
The current Precision & Bias statement for C1781 states that It is not possible to specify the precision of the procedure in this test method for measuring water infiltration rate of permeable unit pavement systems that is universally correct because this test method can be applied to many different paving unit shapes with different size drainage joints or openings filled with different aggregate sizes, and because the extent of in-situ surface clogging during their service life is not controlled. While this is true, the task group will do work to provide whatever guidance is possible on the precision of this test method. To that end, a single user repeatability study is being conducted with two operators performing the test on 10 different permeable unit paver systems with 3 different aggregate sizes in the drainage joints for a total of 30 different unit paver/drainage aggregate combinations. This work will be conducted under ASTM ILS # 1012.
Keywordsclay paving units; concrete grid paving units; concrete paving units; infiltration; permeable; unit pavement systems; water;
Draft Under Development