Los Angeles City Council approves new watering rules
19.08.10
The Los Angeles Burgh Council on Wednesday approved a new lawn-watering ordinance , superseding the standing two-day-a-week sprinkler authority with a revision that allows lawn-watering on three days.
Designed to allay pressure on aging borough pipes, the new rule will require Department of Water & Power customers whose row addresses end with an odd number to use lawn sprinklers on Mondays, Wednesdays and Fridays, while Los Angeles residents with even-numbered addresses should deuterium oxide on Tuesdays, Thursdays and Sundays.
To prevent evaporation, which can consume as much as 50% of the efficiency from sprinkler systems used midday, lawn watering must be done before 9 a.m. or after 4 p.m.
Standard sprinkler systems with spray heads or bubblers will be permitted to run eight minutes per day. The more effective rotors and multi-stream rotary heads will be allowed 15 minutes per course and up to two cycles per day, per watering station.
Source: Los Angeles Times (blog)
Match sprinkler's spray pattern to shape of lawn
21.08.10
With the unusually hot summer, I have found myself needing to
make good on my lawn sprinklers. However, when I get to the store there
seems to be many different types. How do I know what is best for my
yard?
We have recently seen a tremendous spit in sales of hoses and
sprinklers, and this question is raised frequently. When watering a
lawn, you insufficiency to water infrequently, but deeply. The best rule of
thumb is to apply sprinkle to a depth of 1 inch at a time, allowing
the soil time to absorb the sea water. Grass roots grow from 6 to 8
inches deep, so you will need to allow your sprinklers interval to run
in intervals to wet the soil to that depth.
Choosing the correct sprinkler is as simple as finding the exemplar
that has a spray pattern that most closely matches or can be
adjusted to match the shape of your lawn. There are five types of
pocket sprinklers to choose from: oscillating sprinklers,
revolving sprinklers, impulse sprinklers, stationary sprinklers and
traveling sprinklers. Each kind puts the water on your lawn in a
specific pattern. The amount of water deposited within the spray
representation can also vary from heaviest amounts deposited near the
sprinkler to those depositing the heaviest amounts at the outer
with one's heart in one's mouth of the area to be watered.
Source: St. Louis Post-Dispatch