How deep are they buried in the mud?
Do they have to be removed below the mud line?
If so how far below?
There could be many remedies to help just need a bit more info.
The Navy drove them in for a railway drydock a very long time ago. I'm assuming that they are very deep. They tried to use a vibratory hammer to pull them out with no luck. My plan of attack for now is to cut about 1 foot above the mudline with a hydraulic chainsaw. Also, I'd say that they are between 30 and 40 feet below
Thanks Chuck. In your opinion, the way I described the pilings, do you think it would be safe to rig the piling that I am cutting to another one that hasn't been cut yet? (No barge with a crane at this shipyard, and the owner wont spring for it for this job)
You know Sauwn Sorry Flynn and Mikes thoughts pretty much say what I want to say now correct me if Im wrong but the way I understand you want to cut the piles unsupported and to fall like a tree if thats the way the customer whats it Id tell him to find someone else Think about it 0 Vis current ECT....... you have no idea where its going to go.
as`mentioned by mike cut the pylon 70 to 80% starting on the upstream or windward side depending on conditions so that is does not fall on the diver in the event of remaing 30% failing.
get the diver out of the water and fell the pylon by mechanical means of a boat, wire puller, winch etc..
as for stays to hold pylon upright,possible but time consumsing can be use to prevent the pylon falling toward the direction of the diver or umbilical, i wouldn't use unless dealing with particulary large pylons capable of falling on other structures that arn't to be demolished
Yeah, you and Dale made an excellent point about the possiblity of it sinking....especially considering how old they are. A small workboat pulling on it is a great idea...I feel pretty dumb for not thinking of that sooner. Thanks:)
By all means make sure the pile is tied off so it wont come over your way as it falls and either hurt you or land on top of your air hose there bye pinning you on the bottom until you figure how your going to get out of that one. One who has been there.
Number one how high above water line is the pile at high tide??
you do not have to cut a wedge like your cutting down a tree.
I have cut hundereds of wood pile and have never been hit with one.
you need to make a straight cut and have a sharp blade on the chain saw.
take a 4 inch long 2x4 and nail it just below cut line.
rest the blade on it and make your cut.
the pile will kick towards the 2 x 4 just stay off to the side when making the final cut. work the saw right and left as you cut.
the pile will run for the surface and lay over.
If you are in real shallow water with a high pile work the same way just stay off to one side and always have your dive hose and tool hose away from the saw.
If you have a number of pile to cut in a row , run a line and staple it to all the piles so when you cut them they will float together and can be pulled into to remove from the water.
Concrete and steel can piles is another story.