Wikipedia claims that the figures shown on a fire hydrant sign are in SI units, though the example they depict would imply a 1mm pipe, which seems unlikely. From my youth I seem to remember that the upper figure was in feet and the lower in inches, which is somewhat more credible.
I'll check the upper distance figure, though I'm not going to open the hydrant lid up to see how big the pipe is. Anyone know what the correct unit is?
Comments
Alfred
These are the Staffordshire Fire and Rescue notes on Fire Hydrants
How to Spot a Hydrant:
1) Look for the Marker Plate; a large black capital H on a yellow background.
2) Marker plates are fixed to yellow concrete posts at the roadside, or directly to walls or street furniture.
3) The number between the top of the H shows the diameter of the water main, in mm or inches, feeding the hydrant.
4) The number between the bottom of the H shows the distance in metres from the marker plate to the fire hydrant.
5) Hydrants can be found in the roadway, footway or the grass verge.
6) Look for the cast iron cover with the letters FH.
Thanks, Anonymous. That's the stuff!
Thanks for the info. My ? is who is respnsible for carrying out Flow Testing & Static Pressure Testing/ operation of the full working hydrant? Dose this come down to the owner of the premises in which the hydrant is on? As you may know that the Fire Brigade use to take this test as part of their routine check, but for reduction in man power etc have they now lease this responsibility to a third party?
Sounds good, except I have a hydrant outside my property that has 6 and 28 listed (upper and lower). So its a 6 inch diameter pipe right? but 28 meters away from the sign? its either very deep or incorrect because theres no way its 28 meters away. would this not be listed in feet since the top number is inches?
Wikipedia says the top number is the diameter of the pipe (mm or inches, depending on how modern the sign is, and the lower number is the distance from the hydrant (inches or meters or millimetres). Personally, I doubt the use of millimetres on the lower number under any circumstances. So, "Sounds Good", I would suggest that your hydrant is 6 inches in diameter and 28 inches from the sign.
Thanks, Anonymous . That's the stuff!
From the Staffordshire Fire Brigade website
(http://www.staffordshirefire.gov.uk/ccm/navigation/999/general-informati...)
"Information: "
"Staffordshire Fire and Rescue Service own over 17,000 fire hydrants connected to water mains in the county."
"Hydrants are a special type of valve used to access water for fighting major fires and for replenishing water tanks on fire appliances."
"Hydrants are sited below ground to protect them from frost and accidental damage. They are enclosed by cast metal covers embossed with the letters FH."
"Their location is shown by marker plates fixed to concrete posts, street furniture and walls."
"The figures above the H are the nominal pipe diameter (mm or inch), and below the H is the distance to the hydrant (m)."
Hope the above helps :)
My neighbour has a fire hydrant sign on a concrete post at the edge of the pavement, adjacent to his wooden panel fence. He is claiming that the original fence was some 18" further back off the pavement but previous owners have moved the fence nearer to the pavement this distance (which is onto land not previously owned by them i.e. a verge).
Would a hydrant sign be put in a position close to the pavement or further back adjacent to the originally claimed position of the fence? If the sign is in its original position and the fence is not, surely this would prevent a serious trip hazard as the sign would be exposed adjacent to the pavement? Would /is this an acceptable position for a hydrant sign as logic would suggest that the hydrant sign would have been placed further back on the verge adjacent to the original fence position to avoid this trip hazard? We contend that the hydrant sign and fence are both in the original position. My neighbour claims to have stolen this 18" strip of land from the local authority. This strip of land is 18" wide at its widest part, narrowing to 0" over approximately 30'.
Any information/ legislation on the placing of hydrant signs/ sign posts could be extremely helpful..
Many thanks
Phil
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