In order to provide adequate open spaces for
access of light and circulation of air, to facilitate the prevention
and fighting of fires, to prevent undue concentration of population
and to lessen congestion on streets, no building or premises shall
be erected, altered or used except in accordance with the standards
set forth in this chapter.
The attached schedule of density control regulations
is hereby adopted and declared to be a part of this chapter and is
hereinafter referred to as the "Density Control Schedule."
Whenever a side or rear yard is adjacent to
a street, the standards for front yards shall apply.
Side yards for semidetached and attached dwellings
shall be required at the ends of the total structure only.
No detached principal building shall be closer
to any other principal building on the same lot than the average heights
of said buildings.