| • Yard Curtain Drains • Perforated PVC • | ||||||||||||
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Yard Drainage SystemsGenerally less damaging but no less annoying than
flooding in the home, is flooding and swampiness in the yard. Submerged
patios, marshy lawns and fungal death in trees and shrubs can render your
yard an unusable wasteland for 4 months of the year (if we have an uncharacteristic
cold spell, you can always lace up the skates and spark up a neighborhood
hockey game on your lawn).
The remedy for this is to install a curtain
drain system in your yard (sometimes referred
to as French drains or California
drains). Perforated
PVC plastic pipe is installed bedded in drain rock in trenches cutting
across the slope of the yard. The number and location of these lateral
trenches will be dependent on the design of the landscape and the severity
of wetness.
Generally, trenches should not need to be less than 1.5m (5') apart.
In spots where puddling is
particularly bad, 3" low
point surface drains can be installed (drain
grates can be found in a subtle green or black colour).
These also provide excellent clean out points. The system can then be connected to the solid
line of the house perimeter drainage, preferably the rainwater lead,
or directed into a ditch, seasonal pond or sump pit.
As with all drainage projects, establishing a decent grade
(slope) is the key. There must always be a continuous grade between every
individual high (starting) point and the outlet (connection to house system,
ditch, etc.)
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