mini excavator choice for a small demolition project- 1.5 or 3 Ton???
Dug
have got involved with recently. I am hoping to complete the work in a
single weekend.
The scope of the project is
1. To pull down a single car, pre-fabricated garage made from 35mm
(1.5") concrete panels. Approx dimensions of 2m wide x 5m long x 2m
high.
2. To rip up the base of the garage (10 square metres) and surrounding
concrete (10-15 square metres).
The space I have to work in is reasonably restricted. It is about
3.5-4m wide and the only access I have to the garage is from inside it
walls.
My current plan was to hire a 1.5 Ton 360 mini (with breaker) in order
be able to pull the garage down in toward the centre and to rip up the
base of the garage (2"-7" thick) and surrounding concrete drive (2-3"
thick).
The concern I have is that the breaker on the thick garage base will
not be up to the job and worse, will take too much time up. The second
is the shifting capability of the machine. 10 cubic metres of rubble
may take a while!
So in summary...... Do I hire a small 1.5T digger and have room to move
around the area, or hire a bigger 3 ton machine, restrict my working
freedom, yet be able to easily move all the material I need to as well
as cutting down on the requirement to use the breaker?
Any suggestions? P.S. all are welcome.
Thanks
Dug
JerryD(upstateNY)
he/she wants to use.
They will know if the smaller machine will be up to the task or if there is
enough room to use the bigger machine.
Why make an uneducated guess ?
--
JerryD(upstateNY)
Dug
JerryD(upstateNY) wrote:
> Have whoever is going to do the job come over and tell you what machine
> he/she wants to use.
> They will know if the smaller machine will be up to the task or if there is
> enough room to use the bigger machine.
> Why make an uneducated guess ?
> --
> JerryD(upstateNY)
JerryD,
Maybe I made myself unclear. I am doing the digging/demolition for
them. I have used most sizes up to and including 5 tons, but I have
never used a breaker on this type of machine before.
I was really fishing for advice about a typical shifting capacity of a
1.5T machine in a day (assuming a slick operator) and the thickness of
concrete a breaker of this size can actually get through. The last
thing I want to do is hire a machine that can just about do the job,
but struggles alot!
I am confident that the 3 ton machine can do what I want, but like I
said before it will be restricted and obviously costs more to hire.
Maybe I will just have to make an educated guess and learn from the
experience!!
Dug
JerryD(upstateNY)
>>have used most sizes up to and including 5 tons, but I have never used a
>>breaker on this type of machine before. I was really fishing for advice
>>about a typical shifting capacity of a
1.5T machine in a day (assuming a slick operator) and the thickness of
concrete a breaker of this size can actually get through. The last thing I
want to do is hire a machine that can just about do the job, but struggles
alot !<<
When you say "Breaker" do you mean a hoe-ram ? (hydraulic Hammer)
Will you have a regular bucket on the machine and then change it to the
hoe-ram to break up the floor ?
If so, if the concrete in the floor doesn't have any rebar in it, the small
machine will break it up OK.
--
JerryD(upstateNY)
Bobk207
moved, estimate a factored scoop load & thne estimate the number of
t\trips needed.
BobCats can have three breaking hammers BT700, Bt850, BT900
each step up just about doubles the ftlbs deleivered
the BT700 is good for 50mm to 200mm, the 850 100mm to 250mm (concrete
thickness)
my gut is that I would go with the smaller hammer & loader; I'd want
ease of access over capacity
cheers
Bob
Dan Deckert
"Dug" <themonk...@yahoo.co.uk> wrote in message
news:1137347528....@f14g2000cwb.googlegroups.com...
of construction relative to what you need to do a job. A certain piece of
equipment, yes, 3 ton, 1 ton etc, no, except for cranes. IE:We need a 30
ton rig(crane) blah blah. Demo work by tonnage per your description, no.
In lieu of that, it sounds as though you need/want to tear down some
concrete walls & a slab. A simple 580 Case backhoe, or similar size(416/426
Cat hoe), with a thumb on it will do what you need.
Per your measurements of about 6 foot wide x 16 feet long & 6 feet high plus
a slab about 10 feet square. A thumb wouldn't be a requirement but would be
helpful. You're looking at about 5 to 6 hours for destruction & full loadout
at the most. Mini-excavator..NO!
Dan
Dug
>
> --
> JerryD(upstateNY)
Dug
accessability over capacity too. The smallest breaker you mention BT700
is similar to the one provided with the 1.5T machine as well. Thanks
for the approximate hammer capability figure.
Dug
ecavators hired out by companies.
With all due respect to the last exclamation, the garage is completely
inaccessable from its exterior sides, except the main entrance to the
garage. The concerns you raise are an arguement for the larger 3 ton
machine as it can be operated from a safer distance. ( 1.5T and 3T are
the only options reasonably available for this job). Admittedly care
has to be taken in dismantling the sides as there are boundaries and
the house, on all sides. I am intending to shore up (if neccessary) the
walls from falling outward and pull the sides inward, maybe reducing
the height by half all round before final levelling of the structure.
I would love to be able to use a bigger machine with a thumb, but its a
no go on this job.