All pipe other than vitrified clay or cast iron shall first have been approved for
use by the county engineer and shall be equivalent to vitrified clay or cast iron
pipe in strength, effectiveness, durability and safety in accordance with the use
intended.
B.
Before approving any pipe, the county engineer may require satisfactory proof that
such pipe is suitable for use, including actual tests performed by an independent
and approved testing laboratory at no expense to the county.
