Hydraulic and earth engineering – Drainage or irrigation
Patent
1996-04-09
1998-09-01
Suchfield, George A.
Hydraulic and earth engineering
Drainage or irrigation
405 52, 405258, E02D 308, E02D 310
Patent
active
058000909
ABSTRACT:
Liquefiable soil is treated for earthquake liquefaction protection prior to erecting a building structure or work. A plurality of substantially vertical prefabricated drains are positioned at spaced intervals in the liquefiable soil and a reservoir is provided and adapted for draining off water which is expelled from the drains during an earthquake. The drains are generally comprised of an elongated plastic core material providing channels for channeling water off or therealong and this core is sometimes or selectively surrounded by a filter fabric as required to provide a composite drain.
REFERENCES:
patent: 3638433 (1972-02-01), Sherard
patent: 4003210 (1977-01-01), Bostroem
patent: 4040263 (1977-08-01), Eide et al.
patent: 4124982 (1978-11-01), Fuller
patent: 4685835 (1987-08-01), Massarsch
patent: 5213449 (1993-05-01), Morris
patent: 5282699 (1994-02-01), Hodge
By H. Bolton Seed, M. Asce and John R. Booker Stabilization of Potentially Liquefiable Sand Deposits Using Gravel Drains. Jul. 1977.
Shima, M. and Miura, H. (1991) "A New Improvement Method for Loose Sand with Flexible Polyethylene Drain Pipe."
Dr. Helwany, Project Desription Liquefaction Prevention Utilizing Spiral and Wick Drains (undated).
Geotechnics America, Inc.
Suchfield George A.
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