4. Drainage
The drainage system in your arena is
probably one of the most important
aspects of the construction, it ensures
the surface water is drained equally
which enables consistency and a better
performance of the riding surface.
As you can see, the lines of drainage,
either a herringbone or straight-line
system, is most commonly used and
these are cut into the plateau during the
earthworks process.
A sub soil terram is
laid over the site and then the pipes are
laid under a 150mm layer of "clean and
washed" quarry drainage stone. Nothing
other than clean drainage stone should
be used as this is what it is specifically
designed for, water runs through it with
ease and the stone base wont solidify over
time. Reclaimed brick or rubble will cause
you untold problems and should be a vital
point that you check on any quotation.
After testing of the system it should be
sealed with a second layer of membrane,
this time a high quality geotextile
membrane is laid over the complete
subsurface and the seams are bonded. The
edges are then connected to the kickboard
lines to seal the drainage unit from
contamination from the riding surface.
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