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Greenheart pile removal


Johnsond
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6 minutes ago, Stephen Blair said:

Long reach digger with a tree shear would do it but I don’t know how many folk would be keen on working with salt water.  Maybe a job for LGP Eddie!

Have you cut greenheart with a tree shear? It makes oak look like balsa

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2 hours ago, Haironyourchest said:

Could you put a choker on them low down where the timber is sound, then Tirfor them out at an angle? Is there an immovable anchor point ashore? Or, how about a 9 tonne chain come-along, and chain two piles to eachother, and pull them towards eachother to loosen them?

These piles can be 4m into the river bed a 9 tonne winch isn’t going to be much good,

we used a 100 tonne crane and a vib clamp last time and it struggled 

if the river is navigable the whole pile has to be removed or you pay to have it marked on the maps you can just cut then off 

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4 hours ago, Stephen Blair said:

Long reach digger with a tree shear would do it but I don’t know how many folk would be keen on working with salt water.  Maybe a job for LGP Eddie!

You need an old Harvesting Head dangled from a crane in the felling position with the saw underneath, and power it remotely.

Just position it, it'll grip and and cut, with the feed rate adjustable to slow it down for the material.

You could make up a small grapple saw to do exactly the same.

 

Salt water and my kit, no way!!!

 

 

Eddie.

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I used to work alongside a firm called Dean & Dyball on the south coast, They specialise in the construction and demolition of coastal and marine structures. May be that someone there would be willing to share their expertise with you. If anyone should know, it would be them.

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9 hours ago, dumper said:

These piles can be 4m into the river bed a 9 tonne winch isn’t going to be much good,

we used a 100 tonne crane and a vib clamp last time and it struggled 

if the river is navigable the whole pile has to be removed or you pay to have it marked on the maps you can just cut then off 

Crane barge will be on site to assist with removal of steel piles which are to broco cut out so hopefully it comes with a good driver with a rough touch when required  as this will be  the first option. Agreed ref the tirfors  and chain pulls, they have there uses but not in this case. Minus 1m below existing bed level is requirement. I've done it numerous times before using several different methods. The question I was really asking and trying to look for an alternative is wether the shears will do the job, from the comments here I'd say it's not looking good. Looking like it's back to old school or poss one of the fishers offshore crane deployed sub sea shears. 

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8 hours ago, Johnsond said:

Crane barge will be on site to assist with removal of steel piles which are to broco cut out so hopefully it comes with a good driver with a rough touch when required  as this will be  the first option. Agreed ref the tirfors  and chain pulls, they have there uses but not in this case. Minus 1m below existing bed level is requirement. I've done it numerous times before using several different methods. The question I was really asking and trying to look for an alternative is wether the shears will do the job, from the comments here I'd say it's not looking good. Looking like it's back to old school or poss one of the fishers offshore crane deployed sub sea shears. 

Old Harvesting Head or Grapple Saw is just a Chainsaw you don’t have to hold!

 

Dangle it from the crane, it’s dangle mounted on the Harvester anyway and simply power up the Grab and Saw function which will work underwater.

 

A Shear would obviously do it, but you’d not be looking at off the shelf stuff.

 

 

Eddie.

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