(A) Arrangement. A block shall be so designed as to provide two tiers of lots, except where lots back onto a major street, natural feature, railroad or subdivision boundary, in which case it may have a single tier of lots.
(B) Length. The maximum length of blocks shall be 1,500 feet and the minimum length, 400 feet. Blocks over 900 feet long may require pedestrian ways at least ten feet wide at their approximate center.
(1989 Code, § 12.06, Subd. 5)