Openings in drainpipes shall be stopped for testing by a proper
expansion plug, screw cap or plug. The use of plaster of paris or
any similar substance for this purpose is prohibited.
No fixture shall be connected with a drainage system or any
part thereof which requires testing under these rules until the test
has been applied and approved by the Plumbing Inspector.
Defective materials and drainage work poorly constructed and
unworkmanlike in manner or which does not conform to these rules and
regulations shall be removed by the master plumber when condemned
by the Plumbing Inspector. No cement, wax, grease, paraffin, plaster,
sal ammoniac, sand or other improper substance shall be used about
any part of the drainage system, and the presence of any foreign substance
about a joint or any part of a drainage system shall be sufficient
cause for condemning such joint or part of said system. Any split
fitting, hub, defective material and material not as specified in
these rules and regulations, which shall have been condemned by the
Inspector, shall be removed from the work and not used again.