Precast box culvert Jack-n-Bore

[gbam]

Hello all. Has anyone performed, spec'd or witnessed a jack and bore (or similar installation) on a precast box culvert? I am considering this type of installation for a two cell precast box and am wondering if it is feasible. I have heard that it has been done in the past but have not seen it. I think of rectangle being pushed through a round hole. I am hoping some information can be provided on this installation method:

Can you provide back ground on your installation?

What was the cover criteria?

What are the Pros & Cons?

What problems were encountered?

 

[cvg]

yes it can be done and I have seen it
[li]there is no round hole, although you could use a round auger to help remove the soil[/li]
[li]the box needs to be designed for the axial jacking force and the jacking force will be very large. This could be a limiting factor.[/li]
[li]you will need a geotechnical engineer and a jacking contractor on-board to help you evaluate your design.[/li]
[li]Expect it to be enormously expensive[/li]
[li]problems encountered will depend mostly on specific details of your installation[/li]

 

[gbam]

Thanks cvg. I will try to get in touch with a jacking contractor to get more information.