Where it is necessary to raise, lower or alter existing sewer or water manholes, such work shall be done as ordered. The price bid for each manhole shall include the necessary masonry and the resetting of frames and covers.

New frames and covers where ordered shall be paid for separately.

Should the amount of reconstruction found necessary involve the use of over one-fifth cubic yard of masonry, such excess shall be paid for under the Items for "Brick" or "Concrete" masonry, this payment being in addition to the price bid for a readjustment.