Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent
1996-05-01
1998-06-16
Graysay, Tamara L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
371425, E02F 522
Patent
active
057659672
ABSTRACT:
In a method for backfilling pipe placed in a ditch and surrounded by a padding material a geotextile material is placed over the padding material and then spoil is backfilled into the ditch. The geotextile material prevents rocks and other large particles from encroaching upon the padding material which surround the pipe and then scratching the pipe. Preferably, the spoil is separated into layers of increasingly larger diameter particles. The geotextile material can be carried on a padding machine or a frame attached to a tractor or other vehicle. A spreader and optionally a leveler are also provided to evenly place the geotextile material in the ditch.
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Brochure entitled "Reinforcer High Performance Woven Reinforcement Geotextiles," Synthetic Industries Geosynthetic Products Division, Feb. 1, 1996.
Brochure entitled "Nonwoven Geotextiles," Synthetic Industries, Oct., 1995.
Brochure entitled "Smart Solutions in Synthetics," Synthetic Industries, Feb., 1995.
Advertisement entitled "Pipe Saver Rockshield," Conwed Plastics, undated, received Apr. 9, 1996.
Article entitled "Geotextile Swamp Weights: A New Method of Pipeline Buoyancy Control," by R. G. Marshall and M. Rizkalla, Pipeline Digest, Nov., 1991, pp. 11-13.
Graysay Tamara L.
KNI Incorporated
Lagman Frederick L.
LandOfFree
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