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Posted by BobK207 on March 21, 2007, 9:22 pm
>
>
> > wrote:
> >> A yard of dirt is only about a ton damp, and he's only talking about
> >> roughly
> >> 166 yards. So it's considerably less than your mistaken math.
>
> >> --
> >> Steve Barker
>
> >> YOU should be the one
> >> controlling YOUR car.
> >> Check out:www.lightsout.org
>
>
>
> >> > Good to see you're a CE but what do you plan to do with the ~200 yds
> >> > of dirt?
>
> >> > ~ 3000 tons
>
> >> > That's ~8 "double dumps"
>
> >> > btw I've done the shop vac "moving sandy soil / damp sand" experiment
>
> >> > medium sized shop vac ~10 gallon........ soil removal rate ~ 1gpm
>
> >> > so you've got something on the order of 650 hours of vacuum
> >> > time.....not including time to empty & dispose of the dirt.
>
> >> > We're taking about ~100 days of vacuuming (if you can keep at it for 6
> >> > hours per day) Even if I'm high by 2x .....still 50 days of
> >> > vacuuming!
>
> >> > Consider contracting with a vacuum excavator.
>
> >> > Your new footings are 24" wide? How deep?
>
> >> > I hope they go below your intended excavation depth.
>
> >> > cheers
> >> > Bob
>
> > Steve-
>
> > Oops!
>
> > My arithmetic is fine but my reading needs a little work.........
>
> > I read he was digging another 42" but he's digging down to 42", which
> > is really only another 38".
>
> > So I calc'd 194 yds & rounded up to 200.......at 38" additional dig
> > its 175 yd
>
> > the ~3000 tons was a slip on the keyboard (an extra zero) & no proof
> > reading should have been 300 tons
>
> > clearly 3000 tons cannot fit in 8 double dumps!
>
> > I used a guessed estimate of 100 pcf for soil weight (2700lb / yd)
>
> > Researching density of sandy loam gives 80 to 90 pcf. I think your
> > number of 74 pcf is a little light.
>
> > So my arithmetic is fine, its the input assumptions & my typing that
> > need a little work.
>
> > Independent of the exact (real) numbers ~200 tons he's still facing a
> > job that will take many days if done hand.
>
> > cheers
> > Bob
>
> Old, old Mechanical Engineering textbooks indicate that one man can load 1
> cubic yard of loose dirt in about 45 minutes on a continuous basis. Because
> of my constraints I am assuming it will take about 2 hours per cubic yard.
> That includes running the Kubota to the back acreage for disposal. Maybe I
> can lose most of my excess weight?
>
> Thanks,
> Ivan
Ivan-
I'm not disputing that this project is doable.....it is.
But it is a non-trivial undertaking. The fact that you have a Kubota
AND back acreage for disposal will really help out. If you've got
even as little as a half acre you can make this dirt disappear easily
but for me living in an urban / suburban area getting rid of more
than a few yds is a pain.
Check my calcs but 175 yards at 2 hrs per yd ........that's about 2
man months, if you can do it 8 hrs per day.
The final answer isn't going to be 10 work days or 200 work days.
I know of a guy who dug a basement by hand.....weekends & a few hours
here & there after work......took him 3 1/2 years (calender years)
let us know how it works out so we can update our "by hand" dirt
removal rates.
cheers
Bob
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