Waterproofing dams and the like
US4834579A · kind A · utility
4Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B7/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dam formed of roll-compacted concrete having an upstream side and a downstream side is provided with an impermeable membrane curtain. The curtain includes a vertical planar wall portion extending for the full depth of the dam and transversely for the full width of the dam. A series of vertical ribs are connected to and spaced transversely along the curtain. The ribs project toward the upstream side of the dam and extend for the full depth of the dam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.