A fire hydrant is a source of water provided in most urban, suburban and rural areas with municipal water service to enable firefighters to tap into the municipal water supply to assist in extinguishing a fire.
A fire hydrant may have a useful life in the vicinity of 30 years.
Types of Hydrants
Fire Flow Requirements
Chapter 6 of the Planning Guidelines for Water Supply and Sewerage Table 5.5 (see below) states that in residential areas, hydrants should be capable of delivering 15 l/s for two hours at a pressure of at least 12m, at all times.
||Number & Duration
|Residential (ie and area comprising of predominantly residential dwellings of a maximum of 3 storeys)
||15 l/s for 2 hours
||1 @ 2 hours
|Commercial (ie an area comprising of shop and office accomodation of a maximum of 3 storeys)
||30 l/s for 4 hours - For schemes serving a population of less than 1000 a fireflow of 15 l/s for 2 hours should be satisfactory except where a special hazard or risk development exists.t
||1 @ 4 hours
|High risk (ie a development where there is a probability of a fire occurring or there is a high cost of resultant damage (personal injury or property)
||To be determined
||Adopt a special hazard or risk fire
|Residual pressure is to be 12m minimum at hydrant at all times.
References & External Links
- Planning Guidelines for Water Supply and Sewerage
- Wikipedia Article
page revision: 12, last edited: 08 Aug 2010 23:19