Distance from Sprinklers to Side of Obstruction (A) Maximum Allowable Distance of Deflector Above Bottom of Obstruction (B) [in. (mm)] Less than 1 ft (300 mm) 0 (0) 1 ft (300 mm) to less than 1 ft 6 in. (450 mm) 2 1/2 (65) 1 ft 6 in. (450 mm) to less than 2 ft (600 mm) 3 1/2 (90) 2 ft (600 mm) to less than 2 ft 6 in. (750 mm) 5 1/2 (140)
After a snowfall, remember to clear a three-foot path around fire hydrants near your home. If you are unable to do this please contact the Town of Halfmoon Water Department at (518) 371-7410 ext 2600 for assistance. Landscaping or other obstructions must be a minimum of 10 feet clear around fire hydrants.
Sprinkler Head Obstruction Distance Rules: Standard …
Parked vehicles and other obstructions within 60 in. (1524 mm) of the front of the hydrant pose an undue hindrance to fire suppression operations. Snow certainly isn’t the only potential obstruction to fire hydrant access.
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How much space do you need around a fire hydrant?
18.5.7.1 A 36 in. (914 mm) clear space shall be maintained around the circumference of fire hydrants except as otherwise required or approved. 18.5.7.2 A clear space of not less than 60 in. (1524 mm) shall be provided in front of each hydrant connection having a diameter greater than 21⁄2 in. (64 mm).
How is the distance from the fire sprinkler head to the obstruction?
As the distance from the fire sprinkler head to the obstruction’s side increases, so does the permissible vertical distance. Note also that the distance between the deflector and the side of the obstruction is measured from the deflector’s center.
Can a fire hydrant catch fire in the snow?
Yes, fires happen in the snow, too. NFPA 1, Fire Code, requires the following clearance around fire hydrants: 18.5.7 Clear Space Around Hydrants. 18.5.7.1 A 36 in. (914 mm) clear space shall be maintained around the circumference of fire hydrants except as otherwise required or approved.
Can sprinklers be installed on opposite sides of an obstruction?
For obstructions under four feet wide, installers may place sprinklers on opposite sides of the obstruction (so long as the distance between each sprinkler and the obstruction’s centerline doesn’t exceed half the distance allowed between sprinklers— see part 1 in this series ).
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Planting Trees Near Fire Hydrants Can Damage Underground Piping – Obstruction Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher