Section 5 in The Bombay Aerial Ropeways Rules, 1959
5.
(1)The minimum safely factor on the rope stress shall be 4.00(2)Trestles, station buildings, rope anchorages, foundations and other civil engineering structures shall be according to the relevant codes and standards of the Indian Standard Institution, except that no increment in the allowable working stress shall be permitted for inclusion of wind load in the analysis. The external forces taken as basis for the calculation of the supports and their foundation shall also consists of the dead weight of the supports, the rope pressure, the weight of the fully loaded carriers, the effect of starting and stopping of the carriers. The promoter of every ropeway system shall ensure that trestles, station buildings, rope anchorage, foundation and other civil engineering structures have a minimum factor of safety of 4 on the breaking stress after taking into consideration the stress caused by all the aforesaid forces.(3)The height and the distance of the supports shall be arranged in manner that the minimum height of the lower edge of the carrier above the ground except within the station limits shall be 12 feet and such clearance over the highways, canals, rivers and other public places shall be determined by a reference to the authorities in charge of them :Provided that, such clearances over main roads shall not be less than 20 feet.
