Garden sprinkler system calculator

A

A3@MBB

Expert Member
Joined
Sep 17, 2009
Messages
1,807
Reaction score
1,025
Location
Paarl
Anyone with industry knowledge (or someone that want to do the math) to go about setting up a proper garden system?
My DIY system does not work as I don't have enough pressure/flow for the pop-ups to eject and spray within the grid set out.
Next step is to buy a bigger pump, but how big do I need to go?

6 x 5ft rainbird pop-up sprinklers
at max a 1/2 m incline to highest pop-up
total 20mm pipe length estimated at 30m (pump to last pop-up)
38L/min @ 8m Speroni pump does not cut it
 
Last edited:
A3@MBB said:
Anyone with industry knowledge (or someone that want to do the math) to go about setting up a proper garden system?
My DIY system does not work as I don't have enough pressure/flow for the pop-ups to eject and spray within the grid set out.
Next step is to buy a bigger pump, but how big do I need to go?

5 x 5ft rainbird pop-up sprinklers
at max a 1/2 m incline to highest pop-up
total 20mm pipe length estimated at 30m (pump to last pop-up)
38L/m @ 8m Speroni pump does not cut it
Click to expand...

Did you link the last sprinkler with the first sprinkler again i.e. circle? Just download either the Hunter or Rainbird install manuals from their sites, goes into detail with everything you need to know.
 
krieg said:
Did you link the last sprinkler with the first sprinkler again i.e. circle? Just download either the Hunter or Rainbird install manuals from their sites, goes into detail with everything you need to know.
Click to expand...
No I did not. Straight line with end stop after last sprinkler
 
A3@MBB said:
No I did not. Straight line with end stop after last sprinkler
Click to expand...

If you connect it back to the first you will have equal pressure at each sprinkler, with your setup the first one will go the furtherest and the end of line will most probably don't come up. Next step would be to work out your liters per minute and from there looking at how much each sprinkler use at your water pressure, then you can work out how much sprinklers you can put per zone or on at the same time. Also you need to put your sprinklers so that the boundary of one sprinkler is another sprinkler because the sprinklers put out more water towards the end compared to the base, so the base will be covered with the sprinkler on the boundary.
 
krieg said:
If you connect it back to the first you will have equal pressure at each sprinkler, with your setup the first one will go the furtherest and the end of line will most probably don't come up. Next step would be to work out your liters per minute and from there looking at how much each sprinkler use at your water pressure, then you can work out how much sprinklers you can put per zone or on at the same time. Also you need to put your sprinklers so that the boundary of one sprinkler is another sprinkler because the sprinklers put out more water towards the end compared to the base, so the base will be covered with the sprinkler on the boundary.
Click to expand...
Grid has been set out correctly, thanks.
Equal pressure on all as far as I can see with the eye on current pressure if I look at extrusion & spray.
When I manually hold two down, the other extrude completely and spray the grid.

Thanks for the replies
 
A3@MBB said:
I will do this over the weekend as my manifold have spare capacity.
Save me from buying a bigger pump I guess.
Click to expand...
more zones also mean its easier to water a specific area more if needed.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X