I need to cut a trench across an asphalt parking pad, about three inches
wide, three inches deep, 10 feet across. (The purpose is to lay a pipe.)
I guess I could rent a machine to do this, but that would be expensive and
difficult to transport.
Can anyone suggest an easier way?
rent a saw made for cutting pavement. That IS the "easier way".
you could get a "concrete" blade for your circular saw,and get down on your
knees and start cutting asphalt.
and wreck your knees,back,and the circular saw.
or try a cold chisel and hammer. same result,except you don't wreck your
I've read the term "pipe jacking" in the Journal of Light Construction
(US) in an article about 8' dia sewer pipes being installed this way.
Either way, jacking a 2" pipe with a 10' span under asphalt should be
pretty easy to accomplish and far better than damaging the expensive
I'd strongly suggest *not* cutting the asphalt. Try pipe-jacking under
it instead which should be pretty easy for a 10' span and not damage the
"Pipe-jacking" was new to me, but when I look it up on the Internet, it
appears to me I'd need some heavy equipment and hydraulic boring machinery
to accomplish my purpose.
Am I right?
Only for the big stuff. For something like a 2" pipe going 10' it should
be very easy. Often for tasks like this is is recommended to feed water
through the pipe as you force it through under the obstruction. A lot of
DIY sites have instructions for doing this for landscape lighting,
sprinklers and the like.
I tend to favor using a larger diameter metal pipe as a sleeve, putting
a point and cap on it and simply hammering it through like a "driven"
well only horizontally. This will compact the soil around the pipe
rather than the small risk of undermining the asphalt if you use too
much water. Once through, remove the point and cap and push whatever
pipe or conduit you need through the sleeve.
Plug the ends of the sleeve with some putty (electrical department) and
you can readily add additional runs to the sleeve later if needed.
easier to lose your life,or perhaps to lose your freedom.
I'd like to see someone blasting their neighbor's windows(or even their own
windows) in with the shockwave from their explosives. B-)
or maybe cracking somebody's foundation,or at least giving the obnoxious
neighbor the opening to sue for alleged cracks from blasting shocks.
America,what a country! :-)
If you don't mind a lot of labor, for that short distance it is
possible to go under the pad with a water jet set up. Dig holes at
each end, connect your water hose to a length of pipe with the jet
end, and start shoving the pipe horizontally under the pad as the
water erodes away the dirt. Messy? Absolutely, but it is in fact a
known commercial method. Folks have used variations of this for years
with real success. Water wells are commonly drilled this way in
On the plus side, there is no damage to the pad at all, and odds are
it will be a lot faster than hacking at the asphalt.
What are you installing ?
The best solution if you don't want to rent a machine to trench the
or hire a company to do this for you is to re-route whatever wiring
or landscape sprinkler piping around the pad so you don't have to cut
Contrary to what the others have said, pipe ramming an entire length
some sort of pipe (typically 10' lengths unless you get a 20' long
is very difficult and requires that you have a 10' long trench + the
you need to swing a sledgehammer at the end of the pipe in question
(so realistically that is 14 or 15 feet) dug down slightly deeper than
level at which you wish your pipe to be buried...
Depending on how your pipe or conduit needs to be routed (how many
turns or bends in it) it might be worth renting a trenching machine as
it will result in less work but you would need a paving company to
patch the parking pad when you are done with your project...
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