minimum design & construction standards - Martin County, Florida

Coat: Urethane
or equal (2.0 to 3.0 mils DFT)
Flanged fittings shall meet ANSI 21.20 and AWWA C110 standards.
Joints for ductile iron pipe shall conform to the latest standard of ANSI/AWWA C111/A21.11
for rubber gasket joints and ANSI/AWWA C115/A21.15 for threaded flanges.
Cement-lined ductile iron pipe shall conform to the latest standards of ANSI/AWWA
C104/A21.4
DIP shall be required in the following circumstances:
a) Main 24 inches in diameter and larger.
b) Within 15 feet of buildings, canals or lakes.
c) Crossings under potable water, sewage or storm pipes in accordance with
Item 4 of this Section.
d) Crossings over potable water, sewage or storm pipes in accordance with
Item 4 of this Section.
e) Carrier pipe for jack and bores (restrained joints).
f) Aerial crossings.
g) Deep piping.
h) DIP may be mandated by the Department in any instance of off-site or on-site
construction where future abuse to the line is possible due to location or
circumstances, extensive length under pavement, or in private property away
from County rights-of-way.
7. Reclaimed Water Main - Size
The reclaimed water mains shall be sized by the Developer's Engineer as required and as
approved by the Department. The minimum size of reclaimed mains shall normally be 4
inches. The Engineer may be required to demonstrate the adequacy of such sizing.
8. Valves and Fittings
Gate valves shall be ductile iron, resilient seat type with mechanical joints conforming to
AWWA C-500, latest revision. Valves shall be designed for a working pressure of not less
50