Chapter 13.08
WATER DISTRIBUTION – CONSTRUCTION STANDARDS
Sections:
13.08.010 Approval of street superintendent.
13.08.020 Securing permits.
13.08.030 Construction and maintenance bond.
13.08.040 Inspection fee.
13.08.050 Flushing system.
13.08.060 Protection of utilities.
13.08.070 Disinfecting system.
13.08.080 Asbestos-cement pipe and fittings.
13.08.090 Cast iron pipe.
13.08.100 Fire hydrants.
13.08.110 Gate valves.
13.08.120 Valve marker posts.
13.08.130 Coordination of project.
13.08.140 Beginning, completing project.
13.08.150 Pipeline cover.
13.08.160 Fittings.
13.08.170 Patching protective coating.
13.08.180 Fire hydrant installation.
13.08.190 Gate valve installation.
13.08.200 Contamination of pipeline during construction.
13.08.210 Pipeline pressure test.
13.08.220 Flushing and disinfecting pipeline.
13.08.230 Violation – Penalty.
13.08.010 Approval of street superintendent.
All work in the city right-of-way shall be subject to the approval of the city street superintendent. (Ord. 111 § C(1), 1968).
13.08.020 Securing permits.
The contractor shall secure the necessary construction permits. (Ord. 111 § C(2), 1968).
13.08.030 Construction and maintenance bond.
The developer or contractor shall post construction and maintenance bonds as required and set forth under GHMC 12.06.010. (Ord. 588 § 3, 1990; Ord. 111 § C(3), 1968).
13.08.040 Inspection fee.
The developer shall pay the inspection fee. (Ord. 111 § C(4), 1968).
13.08.050 Flushing system.
Water supply for filling, testing and flushing of the new mains will be available from the existing distribution system. Before any flushing is done, the water superintendent shall be contacted to determine if sufficient water is available at that particular time, and no flushing shall be permitted unless the water superintendent is present or gives his authorization. Flushing overnight will not be permitted. (Ord. 111 § C(5), 1968).
13.08.060 Protection of utilities.
The contractor shall be responsible for locating all existing utilities well enough in advance of the excavation to prevent damage during construction. (Ord. 111 § C(6), 1968).
13.08.070 Disinfecting system.
Water mains and appurtenances shall be disinfected in accordance with Section 2.4 of the “Standard Specifications and Standard Construction Details,” 4th Edition, 1966 published by Hill & Ingman, Consulting Engineers of Seattle, Washington, copyright 1966, a copy of which is on file with the city street superintendent at the city hall, Gig Harbor, Washington. (Ord. 111 § C(7), 1968).
13.08.080 Asbestos-cement pipe and fittings.
A. Pipe shall be new, asbestos-cement, class 150, in accordance with the latest revision of AWWA Specification C-400. Couplings shall be Super Simplex, Fluid Tite, Ring Tite, or equal.
B. Fittings to be used with asbestos-cement pipe shall be of cast iron as manufactured by the Olympic Foundry Company, or equal, with mechanical joint, flanged or bell ends designed for the direct reception of the pipe ends with connection made by means of a rubber ring retained in an internal groove inside the ball. The fittings shall be functionally compatible with the respective type of pipe joint being used, with respect to gasket, dimensional data and class of pipe. Fittings shall conform to applicable ASA Specification A21.10 with respect to wall thickness, manufacturing process and water pressure requirements.
C. The fittings shall be of the appropriate class, and the flange faces shall be machined F & D, 125 pound. (Ord. 111 § A(1), 1968).
13.08.090 Cast iron pipe.
Cast iron pipe shall be new, Class 150, cement lined, cast iron pipe, conforming to Federal Specification WWP-421, and shall be Tyton, or mechanical joint. (Ord. 111 § A(2), 1968).
13.08.100 Fire hydrants.
A. Hydrants shall be four inch MVO Corey Type, conforming to the latest revision of AWWA Specification C-502, except as modified herein. The hydrants shall be Iowa or equal, furnished with two two-and-one-half-inch hose nozzles and one four inch pumper nozzle, flanged joint inlet and a riser of sufficient length to provide at least 36 inches of cover over the pipe. Pentagon operating nuts shall turn counterclockwise to open. Nozzles and operating nuts shall be identical with existing equipment of the city. The hydrants shall be furnished with an auxiliary gate valve and valve box, all of which shall be approved by the city and the superintendent.
B. The installation shall be made in accordance with city standards and hydrants painted with two coats of paint as directed by the water superintendent. (Ord. 111 § A(3), 1968).
13.08.110 Gate valves.
A. Gate valves shall conform with the requirements of AWWA Standard Specification for gate valves for ordinary water works service No. C-500. They shall be iron body, bronze mounted, parallel seat, double disc valves with bronze wedging devices. The valves shall be nonrising stem, open to the left, and shall be equipped with standard two inch square operating nuts. Valves shall be equipped with “O” ring packing.
B. A cast iron valve box, with lid marked “water,” and a valve marker post shall be furnished with each gate valve, except marker posts shall not be furnished with hydrant auxiliary valves. Valves shall be Iowa, List 14, or equal.
C. All valves shall be approved by the water superintendent. Contractors shall furnish the location of the nearest point at which replacement working parts are stocked.
D. Gate valves used with asbestos-cement pipe shall be hub end, MJ, Ring-Tite, or Flanged, as shown on plans. Two-inch gate valves shall be IBBM, shall have screwed ends and shall otherwise meet all requirements under this paragraph. (Ord. 111 § A(4), 1968).
13.08.120 Valve marker posts.
A concrete valve marker post shall be furnished and installed as directed, with each gate valve. The concrete marker post shall have a four inch minimum square section and a minimum length of 42 inches with beveled edges and containing at least one three-eighths inch diameter bar of reinforcing steel. Markers shall be placed as directed by the superintendent and set so as to leave 18 inches exposed above grade. The exposed portion of the marker posts shall be painted with two coats of paint as directed by the water superintendent and then the size of the valve and the distance in feet and inches to the valve shall be stenciled with black paint on the face of the post, using a stencil which will produce letters two inches high. (Ord. 111 § A(5), 1968).
13.08.130 Coordination of project.
The contractor shall notify the water superintendent a reasonable time in advance of contemplated construction to allow for coordination of the project. This paragraph does not remove any responsibility from the property owner in regard to proper notifications prior to construction. (Ord. 111 § B(1), 1968).
13.08.140 Beginning, completing project.
The contractor shall not operate any gate valves or make any connections to the existing water main without making the necessary arrangements with the water superintendent a reasonable time in advance. Work shall not be started until all of the materials, equipment and labor necessary to properly complete the work are assembled on the site. When work is once started on this connection, it shall proceed continuously without interruption and as rapidly as possible until completed. (Ord. 111 § B(2), 1968).
13.08.150 Pipeline cover.
All new pipelines constructed shall have a minimum of three feet cover, measured from top of pipe to approved road grade. (Ord. 111 § B(3), 1968).
13.08.160 Fittings.
All fittings are to be blocked with poured concrete, Mix 1-2-4, against undisturbed soil with sufficient concrete and three-fourths inch anchor rods, if required, to resist the resultant forces. (Ord. 111 § B(4), 1968).
13.08.170 Patching protective coating.
All couplings, bolts and pipe, where protective coating has been damaged or removed, shall be patched by coating with applications of hot asphaltum and wrapping with protective wrapping material before installation in the trench. Surfaces shall be dry and clean when either patching or joint wrapping is being done. Other methods which will provide complete protection of the joint or coupling may also be used subject to approval of the water superintendent. (Ord. 111 § B(5), 1968).
13.08.180 Fire hydrant installation.
A. All fire hydrants shall be installed vertical and furnished with gate valve and cast iron valve box as shown on the construction standards.
B. The length of the hydrant run will be determined by the superintendent. The hydrant shall be set on a solid concrete block four inches by eight inches by 16 inches, a minimum of six cubic feet of clean gravel shall be placed around the base of the hydrant for a drain pocket, and a concrete bearing block of adequate size shall be provided behind the hydrant.
C. Where it may be necessary to set a hydrant in cut or fill, the area for at least three feet radius around the hydrant shall be graded and leveled. The slopes or fills shall be neatly graded by hand. (Ord. 111 § B(6), 1968).
13.08.190 Gate valve installation.
Each gate valve shall be installed with the specified valve box and a concrete marker post four inches by three feet six inches long set 24 inches deep and shall be installed as directed. The distance to the valve shall be stenciled on the face of the marker as specified. (Ord. 111 § B(7), 1968).
13.08.200 Contamination of pipeline during construction.
Care must be taken to prevent contamination of the pipeline during construction. (Ord. 111 § B(8), 1968).
13.08.210 Pipeline pressure test.
The pipeline shall be tested by the contractor in the presence of the superintendent to a pressure of 250 psi, and the leakage rate at this pressure shall not exceed the following tabulated amounts:
Allowable Loss per 15
Pipe Size Minutes/1,000 ft.
4" 0.78 gallons
6" 1.18 gallons
8" 1.58 gallons
10" 1.98 gallons
12" 2.37 gallons
(Ord. 111 § B(9), 1968).
13.08.220 Flushing and disinfecting pipeline.
The pipeline shall be thoroughly flushed and disinfected by the contractor. (Ord. 111 § B(10), 1968).
13.08.230 Violation – Penalty.
Violation of any portion of this chapter is an infraction and subject to a penalty of $500.00 as provided in GHMC 1.16.010D and for any costs incurred by the city relative to any violation and as otherwise provided in this chapter. (Ord. 460 § 20, 1985).