Apparatus and method for minimizing liquid infiltration into subterranean openings

Assemblies and methods are provided to divert liquids that would otherwise infiltrate utility manholes or other hatchways, while allowing gases to vent to the atmosphere. Preferred embodiments of the assemblies comprise a cover support frame, a sheet of water-repellent gas-permeable material occludi...

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Bibliographic Details
Main Author CLOSKEY ROBERT F
Format Patent
LanguageEnglish
Published 01.06.2004
Edition7
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:Assemblies and methods are provided to divert liquids that would otherwise infiltrate utility manholes or other hatchways, while allowing gases to vent to the atmosphere. Preferred embodiments of the assemblies comprise a cover support frame, a sheet of water-repellent gas-permeable material occluding the central opening of the support frame and a cover mated to the frame. Preferably, a stiffening ring or other means of providing structural rigidity to the venting structure is provided. The assemblies are lightweight and are simple to install, and can be fabricated from materials that are readily available. Moreover, the assemblies can be easily modified to accommodate field conditions.
Bibliography:Application Number: US20020238478