minimum design & construction standards - Martin County, Florida

to provide advance notification of cleaning may result in the Contractor not being allowed to
clean the mains. Water used for filling and cleaning shall be from an approved water
source.
The cleaning of piping systems shall be accomplished by the controlled and pressurized
passage through the system of a series of hydraulic or pneumatic polyurethane plugs (poly
pigs). The poly pigs shall be entered into the system by the use of a pig launching
assembly. The poly pigs shall be removed or discharged from the system at a point as near
to the end of the system as is logistically and mechanically feasible. The contractor must
demonstrate to the satisfaction of the Department that this work will be performed by
experienced and knowledgeable supervisors and personnel who have properly, safely and
effectively provided for the cleaning of comparable systems in similar applications.
10. Pressure Testing
All mains shall be tested for leakage. Water shall be supplied to the main and pumped to
the required 150 p.s.i. pressure.
The Department shall be notified at least 48 hours in advance of any testing procedures.
After flushing is completed, line pressure shall be applied to the complete system to
determine if any major defects are present. The complete system shall then be tested at a
pressure of 150 psi. for a period of not less than two hours. The Department may, at its
discretion, increase the period to four hours. The maximum length of pipe to be tested at
one time shall not exceed 1500 linear feet. An oil filled pressure gauge up to 200 psi at 2
pound increments shall be used for all pressure tests. No visible movement of the system
shall occur and leakage shall not exceed:
L = ND√P
7400
Where L = Leakage in gallons
N = Number of joints in test section
P = Test pressure in psi.
D = Diameter of pipe in inches
11. Installation
A) Installation and testing of DIP force main pipe and fittings shall be in
accordance with AWWA Specification C-600 Latest Revision and Department's
Construction Standards and Specifications.
B) Any pavement cut shall be replaced in accordance with requirements of the
agency of jurisdiction.
C) All loading or unloading of pipe, fittings, valves and accessories shall be done
in such a manner so as to avoid damage. The pipe shall not be skidded or
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