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Chapter 7.90 UNIVERSAL DESIGN Page 8 of 9 hallway with a thirty -nine (39) inch width, and a thirty -six (36) inch clear doorway width may be requested from a hallway with a thirty -six (36) inch width. 2. The width of the level area on the side toward which an accessible door swings consistent with CBC Chapter 11A. 3. If the Building Official or owner /purchaser determines that the accessible route and doorway width options prescribed by Chapter 11A are not feasible and that a less wide accessible route is necessary, a functional alternative to ensure that all entries into rooms required to be accessible may be approved by the Building Official or purchaser /owner if it meets at least one (1) of the following requirements and if the hallway is not less than thirty -six (36) inches in width: a. The entry door to the room must be at the end of a hallway or passageway, or open directly from another room on an accessible route of travel, so that no turn of ninety (90) degrees or more is necessary to enter the room. b. The hallway wall opposite the room must be inset enough to allow an area of at least eight (8) inches deep with at least a sixty (60) inch run centered on the center of the entry door opening [e.g., an eight (8) inch by sixty (60) inch notch or alcove.] c. The hallway wall on the same side as the room must be inset enough to allow an area of at least eight (8) inches deep with at least a sixty (60) inch run centered on the center of the entry door opening [e.g., an eight (8) inch by sixty (60) inch notch or alcove.] d. The hallway wall directly opposite the room door must open to another room with at least a sixty (60) inch opening on a level with the accessible passageway or hallway. NOTE: Doors or openings to the rooms required to be accessible may be wider and the notch or alcove smaller if equivalent access is not impeded. In addition, for a doorway at the end of a hallway, or in other circumstances, the notch or alcove need not be centered on the doorway if equivalent access is not impeded. 4. Flooring throughout the residential dwelling unit consistent with CBC Chapter 11A. 5. Standards pertaining to residential structures from ANSI A117.1 may be used throughout this chapter when CBC Chapter 11A does not contain specific standards or when the ANSI standards are equivalent to the Chapter 11A standards. (Ord. 21 -07 1 (part)) 7.90.140 Standards —New construction Permissive options. A. The developer or builder of a visitable residential dwelling must offer an opportunity to select any of the features listed in this chapter to an owner or prospective owner of a visitable residential dwelling at the earliest feasible time after the owner, purchaser, or prospective purchaser is identified. B. The developer or builder of a visitable residential dwelling shall construct or install any requested features identified in this chapter unless it would result in an unreasonable delay in the construction or significant unreimbursable costs to the developer or builder. http: /www.codepublishing.com /ca/ Dublin /Dublin07/Dublin079O.html 4/5/2010