Specifications include, but are not limited to: Pipe shall be installed at the locations shown on the plans and to the position, alignment and grade shown thereon, or in the event of grade conflict, as directed by the Engineer. All pipe, fittings, packing, jointing materials, valves, and fire hydrants shall conform to section C of the AWWA Standards. All associated hardware shall have a minimum working pressure of Class 250. All pipe used must have working pressure rating at least two times the expected static pressure. All pipe, special castings and fittings for water distribution shall be furnished in weights, classes, and/or thickness in accordance with specifications as outlined herein and in the proposal form. The water main shall be laid and maintained to the required lines and grades with fittings, valves, and hydrants at the required locations; spigots centered in bells; and all valve and hydrant stems plumb.