A. Use Of Conduit, Chase Or Channel: When piping is to be placed in concrete, cement, masonry, etc., it should, if possible, be laid in a conduit pipe or in a chase or channel left in the solid work. All conduit pipes, pipe channels, and chases shall be carefully graded and drained to prevent the accumulations of water about the pipe; and the walls of such pipe chases or channels should be coated with asphalt, pitch, or moisture resisting paint before the pipe is placed, and be painted with two (2) coats with a bituminous paint or equivalent protective coating. All exposed threads or tool marks on galvanized piping should be painted with protective coating.
B. Black Or Painted Pipe:
1. When necessary to embed a pipe in direct contact with cement or concrete, black iron pipe may be used.
2. If cinders, salt, sea water, or other substance which has corrosive action on the piping is to be used in the fabrication of the cement or concrete, or if the concrete or cement in which the pipe is laid is to be exposed to brine, acid pickling bath liquor, or to other liquids of corrosive nature, or if the pipe is to be in contact with composition flooring or similar, structural material, the piping shall be made up of pipe and fittings galvanized on the outside, and shall be painted with two (2) coats of a pure red lead paint, a bituminous paint, or an equivalent protective coating. It is preferable that such pipe also be wrapped or coated with an approved material for protection against corrosion.
C. Embedding In Structural Member: No pipes shall be embedded in the required protection of columns or other structural member in buildings of fire resistive construction. (Ord. 15.28; amd. 2006 Code)