The person to whom a permit has been issued shall be responsible for requesting periodic inspection at each of the following stages of construction before covering or concealing work and before proceeding beyond such state with the construction:
   (a)   Excavation of footing drains, building drains and building sewers;
   (b)   Completion of the foundation and waterproofing;
   (c)   During the framing of the superstructure;
   (d)   Completion of roughing in the plumbing, electrical wiring, gas piping, heating ducts or piping, or other similar service installations;
   (e)   Before closing in all structural elements; and
   (f)   Upon the final completion of the structure.
(Ord. 178-1959.  Passed 9-14-59.)