Prime Horizontal Gallery of Case Histories

The following images show the geometries for completed projects with ParaTrack-1 and ParaTrack-2. CLICK ON AN IMAGE TO GO TO THE PDF PAGE where you will find this case history and others like it.




 
Falmouth Harbor Crossing
September 2000
500 m under Falmouth Harbor with long, curving track in the horizontal plane to avoid docks. Residences, a seawall, a deep sewer main and a roadway was in very close proximity blocking the exit point.







 
Poldervaart Railway Corridor
December 2000
Pipeline in 1 meter corridor for the first 300 meters of the crossing and a large radius right hand curve over the balance to maintain spacing against the railway. The electrical and magnetic interference from electric trains passing every 7 minutes and high voltage power lines feeding City of Rotterdam caused the failure of two previous attempts to lay the pipeline by another contractor.






 
Paris - River Seine Parallels
March 2001
Two 5 meter parallel crossings under the River Seine and under the Electricity de France building at the edge of the river. Very high electrical and magnetic interference prohibited the use of conventional methods.






 
Teeside Parallel Crossings
December 1999
Two parallels under the River Tees near Teeside, England, in the vicinity of a 3 m square tunnel containing oil pipelines with a large radar mast near the exit point, causing a great deal of magnetic interference.





 
Yerseke Mussells Parallel Crossings
October 2000
3 parallel crossings of 1,500 meters passed under a seawall on entry, under 3 harbors, across an 800 meter estuary, through the center of two sport marinas and down the center of the commercial harbor, all at a depth of 35 m.





 
Hong Kong Suspension Bridge Parallel Crossings
May 2001
4 parallel equi-spaced product lines in designated right-of way under shipping lane and 30 meters offset from suspension bridge. Significant magnetic and AC interference was present. Hilly jungle at beach exit point caused the conventional gyroscopic techniques used for the first 2 parallels to be abandoned.





 
Tunis Parallel Crossings
August 2001
15 horizontal parallels near Tunis with ±1 meter tolerance between bores. Rail lines and infrastructure congestion throughout.





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