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Stormwater Management alternatives for an over budget, over crowded site

Posted on May 7, 2017

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Q: We have a project which is over budget and has limited space. Is it possible to eliminate catch basins and retention ponds if we use a Permeable Articulating Concrete Block (P-ACB) paving surface?
-Stormwater Alternatives are a Must-have

A: 

Dear SAM: Depending on the soil type and specific site conditions, it is possible to eliminate traditional storm water infrastructure, such as catch basins and retention ponds, by using a high performance permeable articulating  concrete block (P-ACB) paving surface.  These systems allow for a more natural, vertical infiltration path, recharging local groundwater,  and reduce pollutants by filtering out suspended sediments.  The specialized shape allows for the paving units to have open joints which don’t need to be filled with sand.  This allows for a much higher infiltration rate compared to traditional permeable pavers and pervious concrete pavements.  The open joints also reduce the probability of being filled or obstructed over time.  If the joints do become clogged, maintenance is  performed by using a specialized vacuum.  If a significant amount of sediment accumulates in the aggregate bedding, the units can be easily removed, allowing the subgrade to be cleaned and re-installed.

Another advantage of these systems is the larger unit size, which allows for heavier loads, making them perfect for parking lots and driveways. The infiltration rate is so high for these systems, that walkways, and/or a parking lot (or even just a percentage of the parking lot) with a P-ACB system can handle the runoff (in most cases) from the entire site, eliminating the need for catch basins and underground structures. This could save the owner of the property a considerable amount of money and space.

If you have any burning questions related to Concrete Masonry you can ask it here, tweet Heidi  Follow us on Twitter, or connect on Linkedin View our profile on LinkedIn

Heidi Jandris is a technical expert and trusted voice of the industry.  She part of the family business’s 3rd generation, grew up immersed in all things concrete block and worked as a welder at the plant before getting her BArch at Pratt Institute in Brooklyn NY. She is the Sustainability Manager and provides technical and design services for A. Jandris & Sons.

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