I did schematic areas for the lawn to see what the needed flow rate should be before placing my equipments.
for example, one of the schematic areas showed that i need 164 l/min..
but when i placed the heads of Rain Bird full 12 van series(triangle layout) and labeled the connected valve, it showed 161 l/min..
first question does this difference is acceptable?
seconed, if not what is the best way to fix it?
for example, one of the schematic areas showed that i need 164 l/min..
but when i placed the heads of Rain Bird full 12 van series(triangle layout) and labeled the connected valve, it showed 161 l/min..
first question does this difference is acceptable?
seconed, if not what is the best way to fix it?
Nibal,
You bring up a great question and the answer is yes, the difference between your schematic area and placed heads flow is ver much acceptable. The main thing you need to remember is that the flow created using schematic irrigation is basically used at the beginning stages, as a conceptual number. This allows you to get a rough (but very close) number to use as you start laying out your areas, and sizing your mainline if needed.
The last thing to remember is that the system is using two different ways to get the same result. One using square foot (or metric) coverage, pressure and precip rate (with then a little bit of fluff factor so you are safely on the high side), while the other is based on the actual performance data for that nozzle.
So again, you will probably always see a bit of a difference, but the system should always err a bit on the high side so you know you are covered.
You bring up a great question and the answer is yes, the difference between your schematic area and placed heads flow is ver much acceptable. The main thing you need to remember is that the flow created using schematic irrigation is basically used at the beginning stages, as a conceptual number. This allows you to get a rough (but very close) number to use as you start laying out your areas, and sizing your mainline if needed.
The last thing to remember is that the system is using two different ways to get the same result. One using square foot (or metric) coverage, pressure and precip rate (with then a little bit of fluff factor so you are safely on the high side), while the other is based on the actual performance data for that nozzle.
So again, you will probably always see a bit of a difference, but the system should always err a bit on the high side so you know you are covered.
Nibal,
You bring up a great question and the answer is yes, the difference between your schematic area and placed heads flow is ver much acceptable. The main thing you need to remember is that the flow created using schematic irrigation is basically used at the beginning stages, as a conceptual number. This allows you to get a rough (but very close) number to use as you start laying out your areas, and sizing your mainline if needed.
The last thing to remember is that the system is using two different ways to get the same result. One using square foot (or metric) coverage, pressure and precip rate (with then a little bit of fluff factor so you are safely on the high side), while the other is based on the actual performance data for that nozzle.
So again, you will probably always see a bit of a difference, but the system should always err a bit on the high side so you know you are covered.
You bring up a great question and the answer is yes, the difference between your schematic area and placed heads flow is ver much acceptable. The main thing you need to remember is that the flow created using schematic irrigation is basically used at the beginning stages, as a conceptual number. This allows you to get a rough (but very close) number to use as you start laying out your areas, and sizing your mainline if needed.
The last thing to remember is that the system is using two different ways to get the same result. One using square foot (or metric) coverage, pressure and precip rate (with then a little bit of fluff factor so you are safely on the high side), while the other is based on the actual performance data for that nozzle.
So again, you will probably always see a bit of a difference, but the system should always err a bit on the high side so you know you are covered.
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