Calculate the Unilock permeable paver minimum required surface infiltration rate for the local rainfall intensities.
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|Void Space Percentage||%|
|Initial Surface Infiltration Rate||inches/hourmm/hour|
|Minimum Infiltration Rate per rainfall intensity||
2 year: Min. IN/HR MM/HR
10 year: Min. IN/HR MM/HR
100 year: Min. IN/HR MM/HR
DISCLAIMER: Results in this calculator are based on newly installed projects with joint material of ASTM #8 or #9 and ASTM C1781 engineered infiltration test results. Stormwater values are for the locations listed are from NOAA precipitation estimates based on 5 minutes intensity and annual minimum rounded to the nearest 0.25 inch. Contact your local representative for more detailed information for your project.