Sprinkler System Planner is a tool designed to assist a sprinkler system installer with calculations, and a list of the likely parts and quantities. Being a tool, it will likely not work as well for some projects as it does for others. The goal for this app is to help the installer save time and money. We will work hard to improve the calculations and make updates as they become necessary. Double check calculations and quantities before making your purchases.
The calculations in this app are based on using schedule 40 PVC pipe and fittings.
Will you be needing a backflow preventer?
A backflow is required for any sprinkler system supplied from culinary (drinking) water. If you are not familiar with backflows you need to do some research for your particular area since there are different requirements.
Enter the available water supply for irrigation. Available water supply is rated in gallons per minute (GPM). You will find a tool for measuring GPM below.
The most common method is to measure the amount of water supplied from a hose bib on the property. Simply place a bucket (generally a 5-gallon bucket) such that it will catch all the water from the hose bib while it is running.
Enter the size of your bucket or container in gallons, as you turn the spigot on (all the way open), press the start button, and when the container is full press the stop button.
Percent used is the maximum amount of water you desire to use for irrigation. While you can, in theory, use 100 percent, it is recommended that you use 70-80 percent. It is, after all, it is nice to have water available for things like showering, washing dishes, etc.
PSI (pounds per square inch) Measure and enter the PSI from a tap or hose bib on the property.
If you do not enter a pressure for the system, the App will assume it is 55 PSI.
Select the main line supply size for the property.
This selection is used to help determine the best way to connect the stop and waste to the existing water supply.
Will you be needing a sprinkler timer?
Will you be needing a stop & waste?
This is a must in areas that have hard freezes. The stop and waste is a shutoff valve that drains the downstream water from a main line. It is generally installed at the point of connection that is leading to the sprinkler system (generally close to the meter or a building). The weep hole allows water to escape when the valve is closed. Thus, a stop and waste is regularly installed at a depth that is sufficient to prevent freezing of the live side of the water main.
This divides the system into sections. Example: front and back yard. Generally, a residential sprinkler system will only have 1 or 2 locations. Keep in mind that by choosing multiple locations the parts list won't be as accurate, meaning you may need more valves to control the selected sprinklers. We will strive to improve this function. It is recommended that you choose 1 or 2 locations.
Will you be installing any garden spigots / free standing hose bibs?
Garden Spigots are a great source for large volumes of water to be supplied with a garden hose. They tend to have more volume and pressure than a regular garden spigot. The most common uses are filling a pool or hot tub quickly, and sprinkler system winterization (Access directly to the main line for blowing the system out with air).
Below you will input sprinkler heads and emitters by selecting their nozzle size or emitter GPM. Simply press the plus button for the corresponding nozzle or emitter GPM. You can likewise remove a selection by pressing the subtract button.
Sprinkler spacing is measured by radius. The radius of a sprinkler is measured from the position of the sprinkler to the edge of the spray pattern (how far the water is thrown by the sprinkler). This means that a sprinkler with a radius of 15' with a full nozzle will actually cover a 30' area.
If you are planning to use Hunter products the calculations will be comparable if you select the nozzles by distance
It is not recommended that you use standard VAN nozzles sizes 4, 6, 8 and 10 with this tool at this time. Substitute with HE-VAN or MPR nozzles for these sizes where applicable. If you must use standard VAN Nozzles, input these sizes using the nozzle that would be considered the next size up, as standard VAN nozzles have a higher GPM.
Drip emitter stations very greatly, thus, to keep the parts list more accurate we need some additional input. The linear feet of drip is representing the length of the area where you intend to install drip lines.
The number of areas covered by drip, is the total locations for the whole yard. Example: If you are installing drip in 2 garden boxes and 1 flower bed you would enter 3 total locations.
Drip, bubblers and micro sprays are all covered in this section. You will need to know the GPH (Gallons Per Hour) for the emitters you plan to use. Simply select the option below that matches your rate of flow in GPH. If you are unsure which emitters to choose, here are some popular options / resources.
These calculations will work with all drip manufacturers as long as you choose the correct emitter for the rate of flow.
If installed properly, MP Rotators are the most efficient type of sprinklers available. They are not the answer for all applications, in fact, I only use them in approximately 1 out of 4 systems, but given the right situation, they work very well. They are less durable and more expensive, but on the other hand, they work well along driveways, because they are less likely to leave water spots on vehicles since they apply water in a very accurate pattern.
MP Rotators are listed here in favor of Rain Bird Rotary nozzles because of their durability.
By using the Estimate Tool in this app you agree to accept full responsibility and total accountability for the prices generated.
Below you need to list the full cost for installation for each item, including all associated labor, pipe, fittings, connections, wiring and other materials. Example: When pricing out a pop-up you include labor, sprinkler head, nozzle, swing joint and the fittings to attach to the lateral.