The contractor, under this item, shall furnish
all the materials, labor and equipment and shall properly furnish,
lay and joint all cast-iron pipe as shown on the approved plans. The
contractor shall also furnish all pipe, valves and appurtenances and
shall properly install all air-release valves and boxes and fittings
and conduct all necessary tests as specified or shown.
The inside of pipes and castings shall be cleaned
before laying and shall be kept clean until accepted in the completed
work. Whenever the work is interrupted, all open ends of pipes shall
be temporarily closed by plugs. All pipes and special castings shall
be carefully examined for defects, and no pipe or special castings
shall be laid which are known to be defective. If any such pipe or
special castings are discovered to be defective after being laid,
they shall be removed and replaced with a sound pipe or casting by
the contractor at his own expense. Prior to final inspection, the
contractor shall flush out the sewer pipe.
Cast-iron pipe shall be laid to conform to line
and grade shown on the plans or as directed by the Engineer. Each
length of pipe and special fitting shall be firmly supported on good
foundation, and adequate means must be taken to prevent settlement.
Pipe within a structure shall be supported on piers or by suitable
hangers as shown on the plans or as required.
Joints may be mechanical joint, compression
gasket joints or ring-type rubber-gasket bell and spigot joints.