(1 )Buffers shall be provided below all Lift cars and counterweights in accordance with the requirements stated below:
(i) Spring buffers or their equivalent may be used with contract speed not exceeding 1.52 metre per second Spring buffers shall be capable ofstopping a Lift carwith contract load from contract speed without permanent deformation.
(ii) Oil buffers their equivalent shall be used with Lift having a contract speed exceeding 1.52 metre per second.
The maximum rate of retardation of oil buffers based on governor tripping speed shall be 24.54 metre per second and the minimum total stroke of such buffer shall be based on an average retardation of 9.81 metre per second based on governor tripping speed Means shall be provided for ascertaining the adequacy of oil supply in the buffers.
(2) Buffers shall be placed symmetrically with respect to the centre ofthe car platform or counterweight, as the case may be and these shall be so arranged that the car or counterweight under normal conditions ofoperation, does not strike them.
(3) Spring buffers shall be capable of supporting a static load equivalent to two times the weight of car and its rated load for car buffers and two times the weight of counter weight for counter weight buffers without being compressed solid.
(4) Spring buffers shall be compressed solid with a static load three times the weight ofthe car and its rated load for car buffers and three times the weight of counterweight for counterweight buffers;
(5) Oil buffers can be used for more than I.5mls speed with separate manual/auto reset electrical switch.