Where created by the subdivision of land, all new blocks shall be of modern design and shall comply with the general requirements of this article.
Generally, the maximum length shall be 1,200 feet, and the maximum length of blocks upon which lots have frontage shall be 500 feet.
Blocks shall be wide enough to allow two tiers of lots of minimum depth, except where fronting on major streets, unless prevented by topographical conditions or the size of the property, in which case the agent may approve a single tier of lots of minimum depth.
When a proposed subdivision will adjoin a major street, the agent may require that the greater dimension of the block shall front or back upon such major thoroughfare to avoid unnecessary ingress or egress.