[Music]
as part of your farm water supply system
it's really important to have it
properly designed well selected and
properly installed
the first thing is the basics of the
budgeting you need to have your
budgeting sorted out so you're not what
you're trying to achieve and that's what
you're designing what you're trying to
do is work from what the stock need
backwards we need to go with the highest
carrying capacity we need to make
realistic estimates of the usage per
head per day
the pig flow rate comes from the fact
that the stock like to water in the
morning in the evening and a whole lot
of stock at once sort of creates a peak
demand and it does take about that four
hour period is roughly when you think
they want to drink as a rule of thumb so
you need to be able to deliver all the
water in a four-hour period not over all
the hours in a day and so that will
determine the pipe sizes and the valve
sizes and all the rest to get that water
moving through
on this farm that we're on the flow rate
required is
well met actually more than capable of
delivering the water required with a
good system
once you know what the flow rate is when
you've worked from the head of stock and
you want to get it done in the four
hours you can work out what the flow
rate is in in liters per minute or
liters per day
assuming the ball can deliver it or if
it's on a dam you then size the pump to
suit that flow rate and the pressure
it's got to go to there are myriads of
pumps on the market they're not very
expensive and if you get the right one
to do the job it will serve you really
well
and work efficiently the pipe work that
reticulates the water from the dam or
the pump or the tank to the stock is
often considered it doesn't matter
but it does matter because firstly
you've got to have the right pressure
rating if you buy a cheaper bit of pipe
and we always want to buy something
that's a bit cheaper it might not have
the right pressure rating so it might
fail if if the pressure rating is wrong
more importantly is the size or the
diameter of the pipe
water running through pipes actually has
friction
and that friction against the walls will
slow up the flow rate
the smaller the diameter the more that
friction is
and the longer the length of pipe the
more that friction is so if you're going
a long distance you need to have a
bigger diameter pipe now the reason why
you want that is if if you might have
the flow rate from your bore
and you might have enough water in your
tank
but the size of the pipe might choke the
system and not let the water get out to
the troughs where the stock are as
quickly as you want
so you need to design that size of pipe
to suit
so moving on from the pipes selection of
the troughs and installing them is
really really important firstly the size
of the trough we need to have enough
capacity in the trough to handle the
stock that are going to be accessing it
and also where the pipe work comes into
the trough you've normally got a gate
valve so you can isolate it if anything
goes wrong but that pipe work and the
valve work it's also good to have that
protected
the actual design numbers that you start
with you've got to think well where am i
what's the climate how much water have i
got what's the topography where will i
put the tank where will the piping go
where's the ball all those things will
matter because it tells you how far
you've got to move things it gives you
the pressures you're talking about it
gives you the distances so all the
designs will be unique
you don't just say i can pull something
off the shelf every situation is unique
so you need to get someone who can do
the design for you on your farm
so the big picture on this farm is we've
got a bore just down on the lower points
that's delivering the water from a
relatively shallow depth the bore is
only about 40 meters deep and uh the the
standing water level is about 12 meters
so that's brilliant it's a solar powered
bore that's also got mains back up which
means it's extremely reliable and it
pumps water up the hill to this tank
behind me which is about a 95 000 liter
tank and that's giving a command in
pressure terms of about 40 meters head
from this tank to the lowest trough
and that's going to be the pressure that
will push the water to the trough if the
pump's not working
that will determine for us the pipe
sizes so it comes up to this tank then
there is the pipes running from this
tank all the way through the farm with
little off takes to a trough in each
paddock a trough of about a thousand
litter size
there's almost zero losses on this place
because the system is fully contained
the water is not
open down there comes from a bore that's
underground it's pumped through a closed
pipe to this tank which has got a closed
roof fully enclosed so there's no
evaporation there's no sevis losses and
then it's reticulated to the uh all of
the troughs in in good time and the
troughs are a good sturdy quality trough
which i think are all set also quite
firmly that means that this system
should supply the water at the rate you
want very reliably for a long time
the installation of a system and and
it's its longevity it's really important
to have it designed properly components
selected properly and everything
installed will if that's done
your system will work well for a long
time
if any of those are actually compromised
it might not
so if you do the job when you can do the
job comprehensively do it well and it'll
go for a long time
