|
3. Applying the Sub-Base Material
for your Synthetic Putting Greens
Before distributing the sub-base, consider the location for
the hole cups. If you put in a crushed limestone sub-base
only, you should consider digging a small trench, under the
sub-base, from the cup to past the edge of the golf putting green and put
washed pea stone into the trench or a PVC pipe, from the hole cup to
past the edge of the green, so that water will drain under
the putting green (French Drain). The hole cups have holes in them
and when it rains, water will drain into the area, under the
hole, and saturate it.
 Bring
your crushed limestone or limestone fines sub-base material
into the area with a bobcat or wheelbarrow, and spread the
sub-base material evenly. We suggest using a shovel
and a landscaping rake to distribute large amounts of
sub-base material and then using a 2"x4" board to
make the sub-base even. Make sure there are no
depressions in the middle of the sub-base because water must
run off the top. You do not want any areas that will
hold water.
Use stakes, string, and a level to determine the height and
contour of the top of the sub-base. Insert the stakes,
in various locations, and mark them where the string
crosses. You can also stretch string across the width
and length of the sub-base to ensure that it will be
basically level with adequate water run-off.
You should distribute the sub-base in 1" or 2"
layers for purposes of compacting it with a plate compactor.
Use the landscaping rake to smooth out the surface. If you
use a power roller, you can put all four inches in before
rolling the sub-base. You should build any contours at
this time. Be sure that the top level is a
little above ground level and allow for a slight slope for
drainage off the top of the green.
To assure yourself that the sub-base is distributed to a
depth of 4", you may want to frame the area with
2"x4"s.
Remember, you will need one ton of each sub-base material
you choose to use, for every 72 sq. ft. or 12'x6' area
|
