E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
61/64
E21D 9/00 (2006.01) E21D 11/38 (2006.01)
Patent
CA 1243498
ABSTRACT A process for waterproofing surfaces, especially applicable to the interior surfaces of tunnels, canals and mines, comprising the steps of cutting strips of lining material; drilling holes spaced at regular intervals in the interior surface of the vault according to the various transversal sections of the tunnel to be waterproofed; fastening the strips of lining material to the vault by means of anchoring elements, broad-headed nails or fastening members, so that the strips of lining material are anchored to the vault of the tunnel; coupling each strip with the adjacent strips, in both longitudinal and transversal direction, to make a leak-tight weld between them. The anchoring elements not covered in the coupling operation are then covered with accessory pieces of lining material and a cord or stringer of waterproof material is placed at the side edges of the lining sections, between the end strips and the lower part of said side edges. The holes in the inner lining which enable the metal elements projec- ting from the vault to pass through the lining strips, as well as those joints between sheets or strips which, in addition to the welding between said sheets, which require watertightness of special quality are then sealed with an elastic sealer.
495580
Burillo Fernando Gordun
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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