Introduction to Aerated Floor Systems for Vapor Intrusion Mitigation 2nd Southeastern States Vapor

30 Pages·2016·4.48 MB·English

by  Eric Lovenduski

2nd Southeastern States
Vapor Intrusion Symposium
Introduction to Aerated Floor Systems for Vapor
Intrusion Mitigation
Atlanta, GA
April 28, 2016
Justin Knight, P.E.
Agenda
 Vapor Intrusion (VI) Conceptual Site Models and
Mitigation Tools
 Introduction to Aerated Floors – Cupolex
 Geosyntec’s Role
 Case Study
 Take Away’s
 Questions
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VI CSMs
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Many mitigation tools, though many ways
to do it right (or wrong)
 Barriers
 Sub-slab depressurization/venting
(SSD/SSV)
 Vertical venting & pressurization
barriers
 Aerated flooring
 Building pressurization
 Sub-slab pressurization
 Membranes and seals
 Indoor air treatment (activated
carbon)
 Passive, active or semi-passive
options
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Example: Sub-slab depressurization
 Sub-slab depressurization most effective, if:
- Dry, permeable soils
- Lack of subsurface obstructions
• Grade beams
• Varied slab elevations
- Intact slabs
- Narrow building footprint
Fan
- Single story buildings
Advective flow
-∆P
4
Introduction to Aerated Floors - Cupolex
A plastic form used to create a continuous void space below
concrete slabs.
 Patented Concrete Forming System
 100% Recycled Non-Toxic Plastic
 Little to No Additional Cost to New Building Construction
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Introduction to Aerated Floors - Cupolex
 Long Track Record
 Invented by Pontarolo
Engineering in Italy circa 1990
 Over 600 million SF installed
world wide
 Installed at 5 USAF bases in Italy
 Introduced to the US in late 2000s
 Sold in Italy, Germany, Spain,
Austria, England, France,
Portugal, Greece, Poland,
Romania New Zealand, Australia,
Italian Federated Police Academy
Africa, Russia, Brazil, Costa Rica,
Canada, Mexico and the United
States.
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Introduction to Aerated Floors - Cupolex
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Introduction to Aerated Floors - Cupolex
Traditional Sub-Slab Depressurization
Radius of Influence
-2”
-0.2”
Minimum -∆P
-0.02”
e.g., Gravel, sand
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Introduction to Aerated Floors - Cupolex
Aerated Floor Sub-Slab Depressurization
Radius of Influence
-2”
-0.2”
Minimum -∆P
-0.02”
Open void
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