4-Inch Rule

Q: I just would like to confirm: When you say a 4-inch projection is allowed into the corridor is that for one side of the corridor or is that for a total of both sides cannot exceed 4-inch?

A: I would say that is for each individual side of a corridor. So, each side of the corridor is allowed a 4-inch projection. The reason I say that is the limit on a projection into the corridor is to prevent a sight-impaired person from running into an object while egressing. Since most corridors are wider that the largest human, the 4-inch restriction is based on individual sides of the corridor.

Even though section 19.2.3.4(2) of the 2012 Life Safety Code permits a 6-inch projection into the corridor, CMS explained in their Final Rule to adopt the 2012 Life Safety Code (published May 6, 2016) that they will require all healthcare facilities who receive Medicare/Medicaid reimbursements to comply with the ADA restriction of a 4-inch maximum projection.  The ADA refers to the ANSI standard A117.1-2009, section 307.2 that limits a 4-inch projection from 27-inches above the floor to 80-inches above the floor.

Brad Keyes
Brad Keyes, CHSP

Brad is a former advisor to Healthcare Facilities Accreditation Program (HFAP) and former Joint Commission LS surveyor. He guides clients through  organizational assessment; management training; ongoing coaching of task groups; and extensive one-on-one coaching of facility leaders. He analyzes and develops leadership effectiveness and efficiency in work processes, focusing on assessing an organization’s preparedness for a survey, evaluating processes in achieving preparedness, and guiding organizations toward compliance. 

As a presenter at national seminars, regional conferences, and audio conferences, Brad teaches the Keyes Life Safety Boot Camp series to various groups and organizations. He is the author or co-author of many HCPro books, including the best-selling  Analyzing the Hospital Life Safety Survey, now in its 3rd edition. Brad has also authored a variety of articles in numerous publications addressing features of life safety and fire protection, as well as white papers and articles on the Building Maintenance Program. Currently serving as the contributing editor of the monthly HCPro newsletter Healthcare Life Safety Compliance  gives Brad further insight into the industry’s trends and best practices.