Is it possible to drill through concrete filled steel pipe piles?
Is it possible to drill through concrete filled steel pipe piles?
(OP)
I'm reviewing plans for a replacement bridge. Two of the new piers will be at the location of the existing piers. The existing footings are supported by concrete filled 12 inch diameter steel pipe piles. The new piers will be sitting on 4'-6" diameter shafts.
Is it possible to drill through the existing pipe piles? I don't have the original plans in front of me but 20+ years ago when I started the project I recall the piles were closely spaced. I don't think they can be drilled but drilling isn't my area. One spot is low headroom ~20'(-) the other is about 29' headroom. A couple a years ago I seawall replacement project - the contractor had to drill 2'6" holes through cyclopean concrete to install piles and it was a b!+(#.
Thanks in advance for your thoughts.
Is it possible to drill through the existing pipe piles? I don't have the original plans in front of me but 20+ years ago when I started the project I recall the piles were closely spaced. I don't think they can be drilled but drilling isn't my area. One spot is low headroom ~20'(-) the other is about 29' headroom. A couple a years ago I seawall replacement project - the contractor had to drill 2'6" holes through cyclopean concrete to install piles and it was a b!+(#.
Thanks in advance for your thoughts.





RE: Is it possible to drill through concrete filled steel pipe piles?
https://www.seattletimes.com/seattle-news/transpor...
RE: Is it possible to drill through concrete filled steel pipe piles?
RE: Is it possible to drill through concrete filled steel pipe piles?
RE: Is it possible to drill through concrete filled steel pipe piles?
Edit: For adjustable length jests, consider test boring drill rod in the larger diameters. It might even be possible to use a larger test boring drill rig for this.
RE: Is it possible to drill through concrete filled steel pipe piles?
The bridge is being replaced in three stages but the current plans don't present a suggested sequence. If I were a contractor, I would want to drill as much as I can up front rather than mobilizing and demobilizing over three years. This is one of six bridges in a fairly complex project; while I'm sure their design works they didn't put enough thought into contractibility.
RE: Is it possible to drill through concrete filled steel pipe piles?
RE: Is it possible to drill through concrete filled steel pipe piles?
RE: Is it possible to drill through concrete filled steel pipe piles?
RE: Is it possible to drill through concrete filled steel pipe piles?
1. See if the bunch of piles in the way have enough capacity to replace the pier.
2. Put the pier outside the pile group and extend the cap out to it.
3. Pull the affected piles, like you mentioned.
4. Draw the pier where you want it and wait for the Contractor to submit a value engineering proposal and split the savings.
A plan and some soil profile details may get you some additional suggestions.
RE: Is it possible to drill through concrete filled steel pipe piles?
www.PeirceEngineering.com
RE: Is it possible to drill through concrete filled steel pipe piles?