removal of cylinder in concrete.greenspun.com : LUSENET : Elevator Problem Discussion : One Thread
Has anyone ecountered a situation where you tried to remove the existing cylinder during modernization and found that the casing was filled with concrete after the jack had been set(The normal application is dry sand). If so how did you deal with it?
-- ricko washington (firstname.lastname@example.org), March 25, 2003
hey ive been there done that you need a well driller if hes got a precussion rig he can beat it out its pretty cool to watch but you can have the hole cored out too thats a time consumer either way you will have to recase the hole
-- jag (email@example.com), March 26, 2003.
Who did you guys use. Pnone #
-- ricko (firstname.lastname@example.org), April 11, 2003.
You will probably find that the casing is only filled with concrete a few inches, break through to see if there is sand below. The casing was probably full of water which was displaced with sand and sealed on top with concrete. Use 2-20 ton bottle jacks and steel beams under jack head to see if you can break cylinder loose. Once out remove back fill with vac truck (same thing you see cleaning out sewers with).
-- Joe (email@example.com), March 28, 2003.
Ricko, I hope this note finds you after the succesful removal of the jack and casing. If not then I agree with the former comment of trying bottle jacks first. If that fails try dual compressors and blow it out. Well rigs are great if you have the room and money. We spent over a month in an occupied building trying to free a jack encased in 6 ft of concrete. Eventually with the help of the jacks and compressors we were able to free the device. Good luck, I feel your pain.
-- James Holder (firstname.lastname@example.org), May 06, 2003.