The following types of joints and connections shall be prohibited, unless approved by the sewers department guidelines or as referenced in the current edition of that department's permit requirement and fees:
- Cement or concrete joints;
- Mastic or hot-pour bituminous joints;
- Joints made with fittings not approved for the specific installation;
- Joints between different diameter pipes made with elastomeric rolling O-rings;Solvent-cement joints between different types of plastic pipe; and
- Saddle-type fittings.