SASR Norms & Standards Vol 2 new.indd - Sport and Recreation ...

Construction of a lawn korfball fi eld
The construction of the korfball fi eld should be done with great care and all materials used should be
chemically and physically analysed to ensure that the fi nal product produces a korfball fi eld that will
prevent the fi eld from disintegrating when used.
• Remove all top soil from the area of the square.
• Excavate out natural earth to a depth of at least 450 mm to Civil Engineering specifi cation.
(Depth may vary dependant on the carrying capacity of the soil)
• Rip and compact in-situ earth to 95% modifi ed AASHTO.
• Install sub-surface drainage comprising 110 mm diameter agricultural drains placed in 450
x 600 mm deep herring bone drainage system at 6 metre intervals and to entire perimeter
of the cricket pitch or square.
• Sub-surface drains to be lined with a “Bidum” Hessian layer and fi lled in with 19 mm
crusher run stone.
• Sub-Surface drains to connect at the lowest point to a storm water catch pit which should
be connected to a storm water main.
• The sub-surface drains are then covered with a 150 mm thick layer of crusher run to assist
in the sub-surface drainage compacted to 95 % modifi ed AASHTO.
• Lay strip of 250 micron plastic down the edges of the excavation to prevent encroachment
of invader grass species.
• The crusher run layer is covered with a 50 mm thick layer of course river sand.
• Add 100 mm thick layer of loam soil and mix in fertiliser as required by soil analysis.
• Roll in 150 mm thick clay in layers (Dependant on the results of the chemical analysis,
fertiliser to promote root growth should be mixed into the clay ) and compact.
• Wash grass sods to remove all soil and tease sprigs apart. Lay sprigs on bulli (clay) surface
and add a thin layer of sieved bulli to a depth of not more than 15 mm(sieve aperture of
maximum 10 mm) over the grass and smooth.
• Apply fertiliser and water twice daily with a fi ne nozzle spray until grass shown signs of
sprouting.
• Continue to water until the grass has covered the pitch.
• Once the grass has established, cut to 15 mm and rub in sieved (1.25 mm gauge screen)
bulli, to a smooth even surface, making sure that the grass tips protrude above the bulli.
• Water daily, as required, until the grass shoots push through.
Korfball
54