Pervious/Porous Concrete

1
Pervious/Porous Concrete

• Poolesville Town Hall

2
Site Plan
3
Details
4
Selling The Idea

• This is different to what is normal in appearance
• Explain that this is part of a total storm water
  management system
• Keep the system in the local news.

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Working with Agencies

• Coordinate with the review agencies
• During construction make sure other inspectors
  are aware of what is taking place

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Setting parameters

• Specifications have not been established to a
  great extent.
• But set reasonable specifications until ASTM and
  ACI issue

7
Finding contractors

• This should be part of the review process and
  part of the contractor selection process.
• Look at what other successful projects have in
  common.

8
Subgrade Prep
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Fabric Placement
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Day of the Pour
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The Material
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Discharge
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Testing
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Test Panel
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Sample
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Placement
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Finish and Cover
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Testing the product and placement in Service

• The Town flooded the Parking lot using a fire
  hose to determine if the Pervious Concrete had
  sections that were not Porous.
• The beams were broken and flex was examined along
  with the shear plains within the aggregate.
• Cores were examined for uniformity of placement.
• Once all, criteria were met the parking lot went
  into service 28 days latter.

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Beam Break
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Functioning
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Finish