(A) Laying of pipe on curves.
(1) Long-radius curves, either horizontal or vertical, may be laid with standard pipe by deflections at the joints. If the pipe is shown curved on the plans and no special fittings are shown, the contractor can assume that the curves can be made by deflection of the joints with standard lengths of pipe. If shorter lengths are required, the plan will indicate maximum lengths that can be used.
(2) Where field conditions require deflection with curves not anticipated by the plans, the Village Engineer will approve the methods to be used.
(3) Maximum deflections at pipe joints and laying radius for various pipe lengths are as found in the following standards:
Ductile Cast Iron Pipe Mechanical Joints AWWA C600
Ductile Iron Pipe Push-On Joints AWWA C600
(4) When rubber-gasketed pipe is laid on a curve, the pipe shall be jointed in a straight alignment before the deflection is introduced.
(B) Joints for ductile cast iron pipe. Joints for cast iron pipe shall consist of one of the two following types, unless otherwise provided in the special provisions:
(1) Mechanical joints; or
(2) Push-on rubber gasket joints.
(C) Jointing mechanical joint pipe (AWWA C111).
(1) The outside of the spigot and inside of the bell of mechanical joint pipe shall be thoroughly cleaned to remove all foreign matter from the joint. The cast iron gland shall then be slipped onto the spigot end of the pipe with the lip extension of the gland toward the socket or bell end. The rubber gasket shall be placed on the spigot end with the thick edge toward the gland. The pipe shall be pushed forward to completely seat the spigot end in the bell. The gasket shall then be pressed into place within the bell, being careful to have the gasket evenly located around the entire joint. The cast iron gland shall then be moved along the pipe into position and bolted. Mechanical joint restraint shall be Megalug Series 1100 produced by EBAA Iron Inc. or approved equal.
(2) Nuts spaced 180 degrees shall be tightened alternately to AWWA C600 standards in order to produce an equal pressure on all parts of the gland.
(D) Jointing rubber gasket joint pipe (AWWA C111).
(1) The inside of the bell shall be thoroughly cleaned to remove all foreign matter from the joint. The circular rubber gasket shall be inserted in the gasket seat provided.
(2) A thin film of gasket lubricant shall be applied to the inside surface of the gasket. Gasket lubricant shall be a solution of vegetable soap or other solution supplied by the pipe manufacturer and approved by the Village Engineer.
(3) The spigot end of the pipe shall be cleaned and entered into the rubber gasket in the bell, using care to keep the joint from contacting the ground. The joint shall then be completed by forcing the plain end to the seat of the bell.
(4) All pipe shall be furnished with a depth mark to assure that the spigot end is inserted to the full depth of the joint.
(5) Field-cut pipe lengths shall be beveled to avoid damage to the gasket and facilitate making the joint.
(E) Bell and spigot pipe with lead joints. This type is allowed only when required by special conditions. Details of such installations shall be specifically approved by the Village Engineer.
(F) Thrusting blocking.
(1) Blocking to prevent movement of lines under pressure at bends, tees, caps, valves and hydrants shall be with minimum 3000 psi Portland cement concrete, a minimum of 12 inches thick, placed between solid ground and the fittings and shall be anchored in such a manner that pipe and fitting joints will be accessible for repairs. A mechanical joint restraint may be used as an alternative to thrust blocking. Mechanical joint restraint shall be Megalug Series 1100 produced by EBAA Iron, Inc. or approved equal.
(2) All bends of 11-1/4 degrees or greater, and all tees and plugs shall be thrust protected to prevent movement of the lines under pressure as per the East Dundee Standards.
(G) Connections to existing mains. Connections to existing water mains shall be accomplished without interruption of service unless otherwise authorized by the Village Engineer or Director of Public Works. Tap and gate valves will be provided at the point of connection to the existing system.
(Ord. 07-57, passed 12-17-2007)