Bioretention with no underdrain
Bioretention with no underdrain
(OP)
Hi! I have a small project of building a park (mostly concrete surface with planting area on one side). The client wants to make the planting area into bioretention area. But the soil type is D and we do not have storm drain system nearby to connect. Is there anything I can do?
When I told him it may not be suitable for this project, the client asked me a good question and I did not have a good answer. He said: what's the difference if the planter area wasn't a bioretention area and just a normal landscaped area. Runoff still goes into the area and seep through the soil as much as it can then overflow. Would it be a problem because we don't have a underdrain?
Hmm, good point. Any input?
When I told him it may not be suitable for this project, the client asked me a good question and I did not have a good answer. He said: what's the difference if the planter area wasn't a bioretention area and just a normal landscaped area. Runoff still goes into the area and seep through the soil as much as it can then overflow. Would it be a problem because we don't have a underdrain?
Hmm, good point. Any input?





RE: Bioretention with no underdrain
Where's the site? (state/city) How high is the water table?
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Bioretention with no underdrain
The easiest way to remedy the lack of a drain is to install more (deeper and or wider) porous material, assuming your groundwater table is not too high.
RE: Bioretention with no underdrain