4-1-14: NONE BUT LICENSED DRAIN LAYERS OF SEWER BUILDERS TO DO WORK:
No sewer builder or drain layer shall allow his name to be used by any other person or party, either for the purpose of obtaining permits or doing any work under his license. And no licensed drain layer or sewer builder shall employ any person to lay pipe or do any brick work in connection therewith except said person shall have a drain layer's certificate to do said work, signed by the Engineer.