Minimum Clear Opening
Comment. The issue of minimum clear opening for doors was one of the most widely commented-upon design features of the guidelines. The majority of commenters representing the disability community supported the Option One specification of a minimum clear opening of 32 inches. A few commenters advocated a wider clear opening. U.S. Representatives Edwards, Frank, and Fish expressed their support for the Option One specification on minimum clearance which is consistent with the ANSI Standard.
Commenters from the building industry were almost unanimous in their opposition to a minimum clear opening of 32 inches. Several builders noted that a 32-inch clear opening requires use of 38-inch doors. These commenters stated that a standard 2'10" door (34") provides only a 31¾ inch clear opening. The commenters therefore recommended amending the Guidelines to permit a "nominal" 32 inch clear space, allowing the use of a 2'10" door, which provides a 31¾ inch clear opening. Other commenters stated that, generally, door width should provide a 32-inch clear opening, but that this width can be reduced if sufficient maneuvering space is provided at the door. These commenters supported Option Two's approach, which provided for clear width to be determined by the clear floor space available for maneuvering on both sides of the door, with the minimum width set at 29¼ inches. (See Option 2 chart and accompanying text at 55 FR 24382.)
Response. The Department considered the recommendations for both wider clear openings, and more narrow clear openings, and decided to maintain the design specification proposed in the Option One guidelines (a clear opening of at least 32 inches nominal width). The clear opening of at least 32 inches nominal width has been the accepted standard for accessibility since the issuance of the original ANSI Standard in 1961. While the Department recognizes that it may be possible to maneuver most wheelchairs through a doorway with a slightly more narrow opening, such doors do not permit ready access on the constant-use basis that is the reality of daily living within a home environment. The Department also recognizes that wider doorways may ensure easier passage for wheelchair users. However, by assuring that the minimum 36-inch hallway and 32-inch clear openings are provided. the Department believes that its recommended opening for doors should accommodate most people with disabilities. In the preamble to the proposed guidelines, the Department stated that the clear width provided by a standard 34-inch door would be acceptable under the Guidelines.
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