How long do you think it will take

[Nac]

Here I found this On Craigslist. A comoany is willing to hire a operator and machine with a hammer for up to 2 days at $2,000 a day to take this down 100'x30'x25' almost 48 years reinforced with concrete. I think they are smokeing CRACK

[DigDug]

Nac, I dont know the thickness, but I wouldnt think it could be chipped apart in two days with a hammer.
I would use a big excavator with concrete pulverizer and munch it down to size faster.
I guess you could go hammer on it for two days and collect the $4000. You might get them it go another couple of days once your there???
What is it anyways?? Good luck , hope you get the job one way or the other. doug

[Nac]

It is a old Coal Shoot now I here it could be 100+ years old and rebar 6" on ccenter. Does anybody know about these structures?

[stumper120]

do to the age heres what to do. 2 day $4,000 easy money. 10 hours drilling holes all around it with a hilti. load them up with betonamit or dexpan, go home, return next day and pull it apart with a 120 size machine. easy money. lot quieter than pounding on it with a hammer.:usa

[Nac]

I am going to look at the job tommarow. If it is the way I think the concrete is going to be superhard not week beacuse of the age. I thought about the depan route but if it has rebar 6" on center it will be a pain to drill and the cost of the dexpan can get expensive and I can get it a great price and have 50 box siiting in my trailer.You have to remember this thing is about 100' long 30' wide and 25' tall you will need a lot of holes. I already talk to the developer and he agreees with me that 2 days arent going o do it.

[Turbo21835]

Looks like there is at least a day of hammering on those columns and beams. With a 45ton machine, your looking at 4-5 days. This is assuming that you have to get the concrete to a fairly small size. This also assumes you have another machine to move material out of the way. Old concrete structures seem to be a crap shoot. They either crumble, or they take all the punishment you throw at them. It would be a great deal at 2k a day for all that time, and maybe you can get the steel too.

[Dirtman2007]

I watch a way the other day that worked real good but was extremely rough on the equipment. A local demo company was demoing a bank, they removed everything but bank vault. Then they took a 3500LB wrecking ball and attached a chain to the ball and the bucket leaving it hanging about 6'. Then they would swing side to side and let the ball smack into the side of the vault. It broke all the concrete up real nice and then was removed with the bucket and the remaining rebar was cut apart. Man was that rough on the excavator's turnable though:eek:

[Turbo21835]

Dirtman, a lot has to do with the operator when it comes to "balling." The guy doing it really needs to understand what that momentum at the end of his machine is going to do. Ive watched guys that look like they are just beating the **** out of a machine. Ive watched guys balling have a cable jump the sheeves. On the other hand, ive watched guys swinging a ball and it looks effortless. Best of all, you dont see any shock loads into the machine.

When i was running a cat 320 preparing non ferrous metals, i had a 10,000# iron ingot that i would throw around. Mostly drop on things I couldnt break with a grapple. That was tough on the machine. No matter what I did. Towards the end I had a 3500# wrecking ball to use. I could throw that thing all over the place. It even did a decent job of breaking up concrete when i dropped it.

[Squizzy246B]

do to the age heres what to do. 2 day $4,000 easy money. 10 hours drilling holes all around it with a hilti. load them up with betonamit or dexpan, go home, return next day and pull it apart with a 120 size machine. easy money. lot quieter than pounding on it with a hammer.:usa

Get orfff.....Last time I went to the Hilti shop it cost me nearly 4 Grand:(:rolleyes::D

[bobcat ron]

Give me a 200 sized hoe and a hammer, maybe I could do it in 3 days at a cost of $6000.

[DigDug]

This is a pulverizer that i am talking about , and this is a small one. Makes a excellent finished product and all steel is seperated.
http://www.youtube.com/watch?v=CUCY20qrPoM

[bobcat ron]

That pulverizer is a little too fast with very little power, I've seen bigger ones that work slower and eat through that concrete faster.

[DigDug]

I'll tell him to take it back , you said it was junk.

[Demoguy324]

Give me a 200 sized hoe and a hammer, maybe I could do it in 3 days at a cost of $6000.


HAH!! good luck bud! We spent 3 weeks hammering with that size machine to complete what could have been done in 3 hours with our Volvo460B/Allied-Rammer 4511 hammer. in my opinion, unless you're preping a stack for blasting, or taking out curbs, a hammer belongs on nothing smaller than 45 tons.

right now we're taking down a structure that is 260' tall, 140' across and 36" thick, 6000 PSI concrete with #18 rebar 12" OC. using a PC600-8, PC400-6 and a volvo EC460B all with Allied-Rammer 4511 hammers.

To appropriatly do this job a 45 ton machine would be the best.

[Nac]

Well I saw the job yesterday and they rented a Case 160 with an Okada 3,000 lb hammer and did about an 8' square section in one day. I told that I can get him a John Deere 370 with a concrete cracker there and he said they where going to try the hammer again today and let me know.

[DigDug]

Nac- I'd like to see a pic of the Case and how thick the walls were.

Hey Nac, does anybody make a flatbed that can go on your dumpster truck? Something that would go on in place of a can and haul a dozer, skidsteer , etc.? Preferably with a winch or use the trucks winch? doug

[Nac]

Yes you can get a flatbed made any of the container manufactors will make you a flat bed. The winch is possible but how are you going to power it? you have to remember that the flat bed is going to go on and off the truck so there will be hoses or wires that you must connect and disconect.

[Nac]

The problem is that the 160 does not have the reach in hieght and the bin walls are not that thick and all you do is punch holes in them. Then every 8' there are 24x30 heavily reinfored concrete beams and coloums there are to high to hammer because you can not really get any down presurre on the hammer.

[Turbo21835]

Getting extra height is not a problem. Just hammer at what you can reach to start. Then gather all that material that you have knocked out, and use it as a ramp. Its old school, but it works. Theres a site here in town where they have a ramp, if i have time today ill run by and grab some pics

[bobcat ron]

HAH!! good luck bud! We spent 3 weeks hammering with that size machine to complete what could have been done in 3 hours with our Volvo460B/Allied-Rammer 4511 hammer. in my opinion, unless you're preping a stack for blasting, or taking out curbs, a hammer belongs on nothing smaller than 45 tons.

right now we're taking down a structure that is 260' tall, 140' across and 36" thick, 6000 PSI concrete with #18 rebar 12" OC. using a PC600-8, PC400-6 and a volvo EC460B all with Allied-Rammer 4511 hammers.

To appropriatly do this job a 45 ton machine would be the best.

I never said I'd get it done!!!!!! :lmao

[kamerad47]

Nac, Something tells me these guys don't want to pay!!! There are plenty of guys that have big hammers or you can rent one they are looking to do it cheap!!

[HRD Remco]

When it is really heavy you should use this: Cat 5110B 28m Triple "Dutch Bunker-Killer" with CR100R 11,38 ton crusher.
http://www.bouwmachineforum.nl/forum/viewtopic.php?t=13874
http://66.71.151.107/en_index.asp Mantovannibenne

Gr, Remco

[Turbo21835]

Since I said I would get you a picture, here goes. Kind of hard to see, but the pile goes all the way up to the building. The hoe sits on top, and boom, high reach demo, old school style.

http://i32.photobucket.com/albums/d30/turbo21835/pics4608042.jpg