minimum design & construction standards - Martin County, Florida

Hydrants shall be placed within 15 feet of the street of paved area when possible, and shall
be no closer than 5 feet from the edge of the street or paved area and/or back of curb. The
height of the hydrant above grade shall be acceptable to the Fire Marshall and Department.
A detector check valve and other appurtenances as may be required will be specified on
fire sprinkler lines and privately owned and maintained fire hydrant lines.
11. Water Service Lines and Taps
Water service taps on the main shall be spaced at a minimum distance of 18 inches apart.
A minimum distance of 18 inches from all joints must be maintained. All service line taps
shall be installed in accordance with the construction details of this manual. Services shall
have a minimum of 30 inches cover including at ditches. All service crossings under
roadways shall be installed in a casing not less than 36 inches between the top of the
pavement and the top of the casing. Water service taps shall not be placed under
pavement including roads, driveways, parking lots and sidewalks.
Services shall not exceed 100 feet to the meter. Meters should generally be placed at the
property line. In developments where the property line is not clearly defined (such as at
condominiums) the meter should be placed for ready access. Meters shall not be placed in
areas that can be fenced, such as backyards, under any circumstances. Services crossing
under parking lots shall have their meters placed prior to the crossing so that the
Department is not responsible for the service lines.
All valves shall be placed according to plan unless relocation is mutually agreed to. Record
or as built drawings shall reflect the actual location and size of all mains, fittings, hydrants,
services and valves. All taps must be at least 18 inches from a fitting or bell.
12. Connection To Existing System
a) Tapping Tees and Valves
Tapping sleeves shall be #304 stainless steel with flanged outlets. Tapping valves shall be
resilient seat type with a flanged joint on the inlet side and a mechanical joint on the
discharged side of the valves. Tapping valves shall have a 2 inch operating nut. Working
pressure rating shall not be less than 200 psi. Gaskets between the flange faces of the
tapping sleeve and tapping valve shall be 1/8" minimum thickness of BUNA N gasket
material.
b) Size on size taps
Taps may be made on the same size main only when the main to be tapped is AWWA
C900, C905 or DIP.
c) Installation
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