Hydrant valves shall be so arranged that the barrel
drain valve will be open when the main hydrant valve is closed, and
the barrel drain will be closed when the hydrant valve is open. The
hydrants shall be so constructed that the hydrant valve shall be shut
reasonably tight when the upper portion of the hydrant barrel is broken
off.
Hydrants shall have two hose nozzles of 2 1/2
inches and one pumper connection of 4 1/2 inches. Hose and pumper
threads shall be in conformity with ANSI Specification B-26 for national
(American) standard fire hose coupling screw thread.
Above the ground-line mark, the hydrant exterior shall
be painted with one coat of zinc chromate primer, two coats of primer
and one finish coat of enamel, the colors of which shall be so designated
by the Water Superintendent.
The interior of the hydrant shall be painted according
to the manufacturer's usual standards. At least one primer coat shall
be applied.
All hydrant branch lines from the water main to the hydrant shall be six-inch cast-iron pipe with a six-inch gate valve and valve box in conformance with § 238-52 of this Part 2.
Each hydrant shall have a concrete thrust block from
the base of the hydrant to the undisturbed ground at the end of the
trench. The bearing area of the concrete block against the ground
shall be sufficient to withstand the water pressure thrust against
the hydrant base.
The area around the base of the hydrant shall be backfilled
with No. 2 washed or crushed stone to allow the hydrant to drain.
This backfill shall have a minimum radius of two feet and a minimum
depth of three feet.
Each hydrant shall be so placed that it is located
between the traveled portion of the highway, including the shoulder
or curb if there is a curb, and the highway side of any existing or
future sidewalk, that is, between the edge of the shoulder or curb
and the sidewalk area. All exposed portions of the hydrant shall be
at least one foot in back of the curb.
Each hydrant shall be set so as to be readily accessible
to the Fire Department and shall not be set in cutouts, ground depressions
or on high embankments above the road.
Each hydrant shall be so installed that the height
(as measured from the crown of the finished road or street surface)
to the center line of the lowest outlet connection on such hydrant
shall not be less than 18 inches. All hydrants shall be installed
so that the minimum distance from the center line of the lowest outlet
connection to finished ground shall be at least 18 inches. All hydrants
installed on other than public roads shall also be installed to meet
the above requirements.
All hydrants shall be so placed that the distance
between hydrants on any street, measured along the center line of
the street, will not be more that 600 feet.
Any person, including firefighters, shall report the
use of any hydrant to the Clerk or Superintendent of Public Works
on the next regular workday so that the hydrant can be checked by
the Water Department.
No person shall erect or plant any obstruction within
six feet of any hydrant or cause any obstruction that will in any
way hinder a fire company from hooking onto or operating any hydrant.