Thursday, 16 January 2014

A Look At Landscaping Sprinklers

By Judy Sullivan


One of the most valuable features among property developers is a well designed landscape. A poorly designed layout results in incorrect usage of landscaping sprinklers, eventually violating water conservation policies that are enforced by many town authorities. Designers must first grasp the hydraulics of water in order to come up with long life installations.

It is paramount that the designer correctly determines the working range of the static pressure associated with his water supply. Assumptions may appear feasible but will more likely result in design flaws that will result in erratic performance. Above all, the design must try to anticipate pressure fluctuations in the supply or reduced flow rates in case upcoming projects will have to be supplied from the same source in the future.

Landscaping sprinklers must be chosen carefully in consideration of the resources available for the project. If the target area is made up of wide spanning fields, rotating sprinklers with a large radius of throw are the cheapest solution. Nevertheless, they will have to be taken off when you intend to do some maintenance on the land. Popup sprinklers are flush with the ground surface when not working and will not be damaged by mowing equipment.

In case you realize that your supply lacks adequate pressure for a sprinkler consider using sprayers. These installations are ideal for fitting in the far off corners where the former are least effective. In nursery beds, strong jets will uproot seedlings so drip irrigation is the most appropriate technique. One thing you should strive to avoid is watering to the extent of creating runoff.

It must be appreciated that runoff exposes plant roots and washes away commercial additives that you have applied. Watering at midday or using sprayers that atomize water into fine mists will lead to evaporative losses. Irrigating in the evening is also to be avoided as wet plants are exposed to disease during the night. The best practice is to irrigate early in the morning so that plants make maximum use of available moisture as their uptake rate increases during the day.

Operation valves must be situated within easy reach by the operator. Underground valves have to be encased in special covered boxes that can be opened for servicing. In case manual valves are installed, consider fitting them in a manner that will allow the operator to work them without getting doused by the working sprinkler.

Installations sharing a lateral line will get a uniform distribution only if the supply is introduced midway on this pipe. Rainwater harvesting is a good practice as it will save on the water bill associated with your project. Remember to tailor your design to the watering patterns you intend to use.

Most golf courses have to be irrigated at night to avoid disrupting business the next day. The water window is a description of the watering times and is bound to differ with the applications. Landscaping sprinklers designing is an engaging activity that has to involve topology, flora and human element studies.




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