Microslotted pipes in PVC for drainage and consolidation
In all situations in which water in the ground is or could
be the primary cause of damage or destruction of building
structures, devices must be used to re-establish the
correct hydraulic drainage of the soil to prevent risks.
PLAFOND sub-horizontal drainage pipes, with a wide
range of mechanical and hydraulic features, allow engineers
to obtain the best performance of the terrain in
every specific case. It is only through careful control and
optimization of the presence of water in every type of
terrain that it will be possible to ensure the maximum
capacity and stability.
PLAFOND pipes are made of high quality impact-resistant
PVC. Modern extrusion technology and the chemical and
physical properties of this polymer give the finished
product the following characteristics:
durability
resistance to stray currents in the soil
excellent resistance to chemical aggression by agents
normally present in the soil
good mechanical resistance to crushing
high resistance to impact and falls
Morphological features
Water collection is ensured by the presence along the
pipe of narrow slots perpendicular to the axis of the
pipe.
The slots are cut with special equipment that ensures
uniformity and the absence of burrs – a very important
factor – in order to reduce to a minimum any resistance
to water intake.
The width of the standard slot -0.4 -0.5 mm – solves
the problem of water extraction in most types of soil
normally involved in this type of operation. In other
words, the standard slot dimensions are the best
compromise, in the range of granulometries of sandy
silt and alluvial mixtures, to obtain a good extraction
capacity without the risk of clogging or, on the other
hand, trapping particles inside the pipe. In the presence
of higher granulometries, a higher extraction capacity
can be obtained by increasing the number of slots, up
to a maximum of 3. The standard extension of each
slot is 2/9 of the circumference.
Filtering cover
To eliminate the risk of clogging by fine sediment carried
by the water, or of trapping, the PLAFOND pipe can be
covered on the outside with a geotextile sheath stitched
with double crossed weft and apply so as to fit tightly
and prevent rolling up during installation of the pipe.
The nonwoven fabric used is made of continuous filament
polypropylene; with its particular features of permeability,
it allows water to penetrate, while trapping any particles
that could enter the pipe and reduce its drainage capacity.
