Hi All,
Not a LandFX question, but this site has the brightest irrigation designers that I'm aware of. So, the more comments the better. Please use the VOTE button in the upper right to agree with someone else. I'd like to give a prize, but don't know how I would do so. So just "Thanks to You" in advance.
Is there a chart that your office uses to direct the contractor (or to use internally) the maximum number of wires (we can use 12 gauge for this purpose) can be run in a certain size of pipe? Currently our specification may be too vague. "... allow for wires to be easily pulled through the sleeve...". Sometimes the general contractor has not even hired the Landscape Contractor before the streets are installed.
Please share your knowledge with the rest of us. Please post a comment or vote on someone else's.
Much appreciated!
Not a LandFX question, but this site has the brightest irrigation designers that I'm aware of. So, the more comments the better. Please use the VOTE button in the upper right to agree with someone else. I'd like to give a prize, but don't know how I would do so. So just "Thanks to You" in advance.
Is there a chart that your office uses to direct the contractor (or to use internally) the maximum number of wires (we can use 12 gauge for this purpose) can be run in a certain size of pipe? Currently our specification may be too vague. "... allow for wires to be easily pulled through the sleeve...". Sometimes the general contractor has not even hired the Landscape Contractor before the streets are installed.
Please share your knowledge with the rest of us. Please post a comment or vote on someone else's.
Much appreciated!
I'm with Tom. The minimum size of our sleeves/conduit is 2" dia. and we specify 2-wire for larger systems. In addition to that, our specs say that the pipe diameter shall be 2 times the diameter of the pipe or wire bundle that is inside of it. While that may be somewhat vague, we've never run into any issues with sleeves/conduit.
-CadMonkey
-CadMonkey
Irrigation Project Manager, CLIA
Glasir Design Irrigation Consulting
Glasir Design Irrigation Consulting
I'm with Tom. The minimum size of our sleeves/conduit is 2" dia. and we specify 2-wire for larger systems. In addition to that, our specs say that the pipe diameter shall be 2 times the diameter of the pipe or wire bundle that is inside of it. While that may be somewhat vague, we've never run into any issues with sleeves/conduit.
-CadMonkey
-CadMonkey
Irrigation Project Manager, CLIA
Glasir Design Irrigation Consulting
Glasir Design Irrigation Consulting
Our chart is as follows:
1" - 7 wires max.
1.5" - 12 wires max.
2" - 17 wires max.
3" - 22 wires max.
4" - 27 wires max.
Note: Use multiple wire chases if number of wires exceeds the maximum for the sleeve size. Do not use greater than a 4" wire chase sleeve.
As has been mentioned above, we typically don't use less than 2" but we have 1" and 1.5" on the chart for the occasional small commercial job that might have 4 or less total valves with a small wall mounted controller on the outside of a building. This way the wire chase can be a small as possible and less conspicuous if it happens to be on the face of the building.
1" - 7 wires max.
1.5" - 12 wires max.
2" - 17 wires max.
3" - 22 wires max.
4" - 27 wires max.
Note: Use multiple wire chases if number of wires exceeds the maximum for the sleeve size. Do not use greater than a 4" wire chase sleeve.
As has been mentioned above, we typically don't use less than 2" but we have 1" and 1.5" on the chart for the occasional small commercial job that might have 4 or less total valves with a small wall mounted controller on the outside of a building. This way the wire chase can be a small as possible and less conspicuous if it happens to be on the face of the building.
Steve Cook
selected the reply #4773 as the answer for this post — 1 year ago
Hi Seaweed, I'm in Australia and we use metric here. We go with what CADMonkey said for the irrigation pipe sleeves, where as for the irrigation cable conduit, we use the following criteria:-
One cable in conduit 50% Space Factor
Two cables in conduit 33% Space Factor
Three plus cables in conduit 40% Space Factor
One cable in conduit 50% Space Factor
Two cables in conduit 33% Space Factor
Three plus cables in conduit 40% Space Factor
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