Some types of residential elevators do not use a traditional elevator shaft, machine room, and elevator hoistway. This allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation. The ASME board first approved machine-room-less systems in a revision of the ASME A17.1 in 2007. Machine-room-less elevators have been available commercially since the mid 1990s, however cost and overall size prevented their adoption to the residential elevator market until around 2010. COUNT 4
QSN1 What types of elevators occassionaly do not use a traditional elevator shaft, machine room or hoistway? ANS1 residential QSN2 In what year were Machine-room-less elevators first allowed? ANS2 2007 QSN3 This decision reflected a revision of what? ANS3 the ASME A17.1 QSN4 What benefits does this serve? ANS4 allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation