No permanent dead-end streets shall be approved unless the following conditions are met:
1. The area is residential.
2. The street ends in a cul-de-sac with a paved outside radius of not less than sixty (60) feet.
3. There shall be no more than 20 houses (i.e. Lots) on the cul-de-sac street.
Temporary dead-end streets may be approved in locations in which the street will be continued in the future. In such locations, the end of the street shall be properly barricaded and a temporary cul-de-sac constructed.