I have a multi-family building with a parking garage on grade level and four stories of residential units above. The main entrance lobby is off the parking garage. My question, does code require the elevator to be on emergency power. I believe the code reads that a building of 75' in height or more does require emergency power, however in the latest issue of EC&M magazine, it states that "The new ADAAG guidelines now require that emergency power be available to elevators that have four or more stories of travel above or below the accessible floor (4.1.3(9)(1). I haven't found this new requirement on the DOJ website. Are these guidelines code? Does emergency power require a generator or will battery back-up suffice? Thanks.