All materials used in any plumbing system or
part thereof shall be free from defects.
Each length of pipe, fitting, trap, fixture
and device used in a drainage or venting system shall be stamped or
indelibly marked with the weight or quality thereof and the maker's
mark or name.
All cast-iron pipe and fittings shall conform
to the American Society for Testing and Materials Standard Specifications
for Extra Heavy Cast Iron Soil Pipe and Fittings (Serial designation
A74-18).
All wrought-iron pipe shall conform to the American
Society for Testing and Materials Standard Specifications for Welded
Wrought Iron Pipe (Serial designation A 72027) and shall be galvanized.
All steel pipe shall conform to the American
Society for Testing and Materials Standard Specifications For Welded
and Seamless Steel Pipe (Serial designation A53-27) and shall be galvanized.
Brass pipe and copper tubing shall conform respectively
to the standard specifications of the American Society for Testing
Materials for brass pipe, standard sizes, and for copper tubing, standard
sizes (Serial numbers B 43-24 and B 42-24 respectively). Brass pipe
and copper tubing shall have fittings of like material.
All lead pipe shall be of best quality and shall
conform to minimum weights per linear foot as follows: one-and-one-half-inch
pipe, three pounds; two-inch pipe, four pounds; four-inch pipe, eight
pounds.
Sheet lead shall weigh not less than four pounds
per square foot.
Sheet copper or brass or galvanized iron duct
work shall not be lighter than No. 26 Brown and Sharpe gauge, and
individual ducts direct to the roof shall be provided for each compartment.
A.
Plain screwed fittings shall be of cast iron, malleable
galvanized iron or brass of standard weight and dimensions.
B.
Drainage fittings shall be galvanized recessed cast
iron, malleable iron or brass, with smooth interior waterway, with
threads tapped out of solid metal.
C.
All malleable iron fittings shall be galvanized.
Brass caulking ferrules shall be of the best
quality red cast brass known as "extra-heavy."
Floor flanges for water closets shall be revealed
and known as "extra-heavy brass."
