hey guys, i have a large driveway that displaces a large amount of water
when raining heavy. there are down dpouts from the house and the garage in
the back and the driveway/patio is pitched to the grass. i want to put in
an in ground drain and 4" pipe to make the flow go elsewhere. the drain in
about 4"deep and w/ a 90 elbow off of the bottom, i'm guessing the overall
the pipe will be about 12" below grade, then i'll make myrun of pipe to
discharge the water.
my main question is, since i love in NJ and the winter can be cold do i have
to worry about the line freezing up or will it be deep enough no to have a
problem. i know as long as there is zero standing water in the discharge
line there is nothing to actually freeze, but before i go digging in the
spring and reseeding grass where i need to, is there something i'm over
I am guessing that if the pipe freezes below grade, there won't be any
surface water to flow into it anyway, and if the surface ice thaws before
the pipe, so you'll have a little flood for a day. Would that work out for
If you have multiple gutter drains plus driveway/patio runoff, you may
need larger than a 4" pipe. If it is NOT below the frost line, it may
freeze (which if not large enough or drained completely, may plug and/or
split it), and frost heaving may eventually shove it out of the ground
(although, that may take years).
Water expands with tremendous force when it freezes.
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