Static structures (e.g. – buildings) – Specified terranean relationship – With waterproofing means; e.g. – covering – coating – or lamina
Patent
1990-04-06
1991-10-08
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Specified terranean relationship
With waterproofing means; e.g., covering, coating, or lamina
52742, 52746, 52302, E04B 192, E02D 1900
Patent
active
050542524
ABSTRACT:
An impermeable membrane seals a layer of asbestos contaminated material and contaminated earth of an earthen floor so as to prevent airborne contamination by asbestos fibers to a crawl space located underneath a building. The asbestos contaminated material is permanently encapsulated in the crawl space with the impermeable membrane which allows walking or crawling through the crawl space without the asbestos contaminated material becoming airborne due to the stretchability of the impermeable membrane. In addition, any gas entrapped by the impermeable membrane is vented to the outside by a hollow tube passing through the membrane and communicating with the outside of the building. Optionally, cementatious material may be entrapped between the earthen floor and the impermeable membrane which, upon mixture with condensate formed on the undersurface of the membrane, would harden and rigidify the asbestos contaminated material in place.
REFERENCES:
patent: 2899771 (1959-08-01), Burris
patent: 3688457 (1972-09-01), Sherno
patent: 4401636 (1983-08-01), Flowers
patent: 4604111 (1986-08-01), Natale
patent: 4626291 (1986-12-01), Natale
patent: 4907386 (1990-03-01), Ekroth
patent: 4908068 (1990-03-01), Pittman et al.
GPAC, Inc.
Ridgill, Jr. James L.
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