Section 29.12 - Safety Factor and Hoistway Requirements(1)Elevator Platform Construction. The platform shall be of steel frame construction designed with a safety factor of not less than six based on the rated load, uniformly distributed. All other parts of the equipment shall have a safety factor as required by 524 CMR 35.00: Safety Code for Elevators and Escalators A17.1-2013 and the Massachusetts Modifications of That Code.(2)Installations in the Same Hoistway. When installations are in the same hoistway the adjacent sides shall be provided with solid dividing wall partitions with not less than % hour fire resistive construction.(3) When travel extends above the top of the hoistway enclosure, aprons of substantial construction shall be provided on the platform of sufficient depth to enclose the space between the top of the hoistway enclosure and the underside of the platform plus three inches when the platform is at its limit of travel.(4) The lower edge of the aprons shall be beveled at an angle of at least 75 with the horizontal.Amended by Mass Register Issue 1366, eff. 6/1/2018.