HEAD-TO-HEAD COVERAGE For proper coverage, layout your sprinkler heads so that the spray from one reaches all those adjacent to it. Head-to-head coverage ensures uniform water application, which saves water and creates the best possible results.
As you can see, the triangle pattern (actually called a diamond pattern) is more efficient, but it is less common because it is more difficult to lay out. Most residential sprinkler systems are done using the square pattern. Layout can actually be quite simple.
This requires sprinklers to be positioned away from obstructions a minimum or three times the maximum dimension of the obstruction.
Most lawns need to be watered no more than three days a week in the spring as well as in the summer and two days a week in the fall. This watering schedule is recommended under normal water supply conditions.
Nothing should be in that area between the bottom of the sprinkler heads and the imaginary horizontal plane parallel to the ceiling that is 18 inches below. This is done to allow an even and unobstructed spray pattern from the sprinklers when triggered to extinguish the fire.
It is ideal to water lawns about one inch of water per week. To determine how long you need to water to get one inch, place a plastic container in your yard and set a timer. On average, it will take 30 minutes to get a half inch of water. So, 20 minutes, three times per week will give a lawn about an inch of water.
1.3 lays out the “Three Times Rule” which states that unless specific requirements are met that “sprinklers shall be positioned away from obstructions a minimum distance of three times the maximum dimensions of the obstruction”, up to a maximum of 24 inches (0.6096 m) though the “maximum clear distance does not apply ...
1-2-3-2-1 watering technique:
In April water 1 day/week. In May ramp up to 2 times/week. In the heat of the summer water 3 times/week. In September drop back to 2 times/week. In the fall drop back down to 1/week.
On average, the sweet spot for watering your lawn is between 25 to 30 minutes each session. However, achieving that deep, healthy green isn't just a matter of setting a timer and walking away — it's a delicate balance that depends on a few factors, which we'll dive into in this article.
For example, rotor sprinkler heads might require 20 to 30 minutes of straight watering time, while a traditional spray head zone will only need 5 to 10 minutes.
We recommend that you use 40 psi when designing your system. Example: if your sprinkler heads use 2.5 gpm @ 40 psi, then a ¾” service (20 gpm) could operate approximately 8 heads at one time. Based on this example calculation, you would not have more than 8 heads on at one time.
1 of NFPA 13, which states that the distance from the sprinkler to the wall can be no more than one-half the allowable distance between sprinklers. The max distance between standard spray sprinklers in light hazard settings is 15 ft. (4.6 m) (with exceptions for light-hazard, combustible concealed spaces).
On average, a traditional sprinkler system zone boasts five to six rotary heads or eight to ten spray heads. At a minimum, you usually need four or five to cover a small square or rectangle.
You want to design the sprinkler system to deliver 100% overlap of the watered areas to eliminate dry spots. To achieve head-to-head overlap, make the distance between heads to be the sprinkler's radius. If the lawn has an odd shape, you can increase the inter-sprinkler spacing.
Yes, sprinklers should overlap, but only up until the point where they're reaching the next zone.
1. Water Thoroughly: Rotor zones should run for about 30-40 minutes per zone and spray zones 10-15 minutes per zone. 2. Water Frequently : Sod areas should be watered at least 2 or 3 times daily for the first two weeks.
Watering like this too frequently for less time doesn't wet the ground enough and keeps roots too close to the surface. Less frequent, longer, and deeper watering encourages roots to reach down for water. A root system extending far down is less susceptible to heat stress and pest damage.
Most homeowners should fertilize their cool-season turf in March, then May, then from September to October. However, UC IPM recommends that lawns in the Sierra area should be fertilized from May to June and August to September.
The 1/3 rule makes the most sense for relatively high cut turf found in golf course roughs, sports fields and home lawns. Applying the rule, you should never let a rough maintained at 2 inches grow higher than 3 inches before mowing.
The rule of thumb for watering an established lawn is, “water as deeply and as infrequently as possible.” Deep and infrequent irrigation stimulates root growth, resulting in healthy, drought tolerant, and pest resistant turf.
Drip irrigation is the most water-efficient way to irrigate many different plantings. It is an ideal way to water in clay soils because the water is applied slowly, allowing the soil to absorb the water and avoid runoff.
6.4, which states, "a minimum clearance to the top of storage and ceiling sprinkler deflectors to be less than 18-inches (457 mum) between the top of storage and ceiling sprinkler deflectors shall be permitted where proven by successful large scale fire tests of the particular hazard." The burden is on employers to ...
Minimums & Maximums:
Maximum sprinkler spacing is defined in NFPA 13 Tables 10.2. 4.2. 1(a) through (d) for Standard Spray Pendent and Upright sprinklers. Minimum sprinkler spacing is 6-ft (1.8 meters) for standard spray pendents and uprights, from Section 10.2.