(1) All counterweights shall travel in rigid guides and in the Lift well or part of a Lift well to which these belong.
(2) If an independent Lift car counterweight is used, it shall not be ofsuch weight as will cause undue slackening of any of the suspension ropes during acceleration or retardation.
(3) Counterweights consisting ofmultiple section with or without frames shall be secured by at least two tie rods passing through holes in all the sections, Such tie rods shall have lock nuts at each end and shall be further secured by suitable split pins .The factor ofsafety ofthe threaded portion ofthe tie rods shall be not less than
8.
(4) RCC casting filler weights which shall be suitably covered on all sides by M.S. sheet and counter weights consisting ofmultiple sections which shall be secured by steel plate and angle bolted with both the ends of counterweight frame. This arrangement shall be used for a contract speed ofa Lift ofmaximum 1.0 mis and capacity ofmaximum 6 passengers (408 Kg). Above the speed of 1.0 mis, Cast Iron fillers are to be used.