E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/32
E02B 11/00 (2006.01) E01F 5/00 (2006.01)
Patent
CA 1305332
ABSTRACT The invention is concerned with a drainage cell per- mitting the drainage of large volumes of liquids from adjacent layers supported thereon. The drainage cell according to the invention comprises a rigid, unitary structure incorporating first and second substantially parallel, load-bearing surfaces for supporting layers requiring drainage, the surfaces com- prising individual perforate portions having substantially equal areas which, in the aggregate, comprise at least 40% of the total area of the surfaces. A plurality of rigid spacer members maintain these surfaces in fixed, spaced relation relative to one another. The perforate nature of the surfaces and the disposition of the spacer members are such that either one of the perforate planar surfaces has a load bearing ca- pacity of at least 20 kg/m2 when the opposing perforate planar surface is supported by a rigid planar surface, and gases or liquids may freely pass through the composite structure around the spacer members in any direction.
534151
Swabey Ogilvy Renault
Urriola Humberto
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