Dear Sir,
The description of the problem must be incomplete. My previous experience with spun piles ( from : Japan, ususally from Yawata Steel subsidiaries) is that each pile when manufactured as one end the steel driving tip and on the end a steel flange. When requiring an extension, the fabricated extensions have on both ends a similar steel flange. The extension of the pile (with such blank fabricated piles i.e. without the pointed tips) calls for good high penetration weld along the two matching steel flanges. It is simple and effective.
Where is your problem ? Is it a different maker of spun piles ? I suspect that even with other manufactured product you could still bare the cylindrical imbedded reinforced wires . Then with : a good welder/boiler maker , create an appropriate steel flange which could be welded as indicated above. This would require a quick setting concrete to patch up and finish the job.
D.J.Sassoon-Gubbay.
d.j.sassoon-gubbay,International Civil & Mining Engineering Consultant,
