Owners of houses and buildings in the City are hereby directed to number houses and buildings, and the following directions and rules are hereby prescribed for numbering the same:
A.
On streets running east and west, Market Street from Delaware River to Sixth Street; Sproul Street from Sixth Street to Thirteenth Street; Edgmont Avenue from Thirteenth Street to the northwest City line, the Building Inspector shall proceed forthwith to renumber in accordance with the provisions of this chapter any houses or buildings which are incorrectly numbered.
B.
In the numbering of houses on streets running northwardly, the Delaware River shall be the starting point. One hundred numbers shall be the allotment for each square, and the odd numbers shall be on the east side and the even numbers on the west side of such streets.
C.
On streets where vacant lots exist, one number shall be allotted to every 20 feet of ground fronting on the street, unless a lot is to be built up with houses or buildings either less or more than 20 feet front, in which event the same shall be numbered as the Building Inspector may decide.