(a) The following regulations shall govern the design and layout of blocks:
(1) The arrangement of blocks shall be such as to conform to the street planning criteria established in this Chapter, and shall be arranged to accommodate lots and building sties of the size and character required for the district as set forth in these Subdivision Regulations or the zoning regulations and to provide for the required community facilities.
(2) Irregularly shaped blocks, those intended for cul-de-sacs or loop streets, and those containing interior parks or playgrounds, shall be approved by the Planning and Zoning Commission when properly designed and located and when the maintenance of interior public spaces is covered by agreements.
(3) No block length shall be longer than 1,500 feet nor less than 500 feet.
(4) Where blocks are over 900 feet in length, a crosswalk easement not less than ten feet in width with a paved sidewalk at or near the halfway point shall be required, if necessary, to provide proper access to schools, recreational areas, shopping centers and other facilities. All sidewalks in crosswalk easements shall be constructed according to the Municipal Standard Construction Drawings.