(1) Apit of adequate depth shall be provided for every Lift below the level of its lowest landing.
(2) The Lift pit shall be so constructed as to be capable ofwithstanding the impact of the Lift car with the rated load or the impact of the counter-weight when either is descending at rated speed or at governor tripping speed in case governor operated safety gear is used.
(3) The Lift pit shall be of adequate size, treated with water proofing compound, net cemented and shall be maintained in a dry and clean condition. The floor of the Lift pit shall be approximately level and where necessary provision shall be made for pennanent drainage.
(4) Where the pit depth exceed 2 meter, suitable access shall be provided by a ladder or any other suitable device and light point with a switch along with a car control switch at entrance level shall also be provided for facility ofmaintenance and repair work.
27. Bottom and top car clearances.
(1) Bottom Car Clearance - when the car rests on its fully compressed Buffer, there shall be vertical clearance ofnot less than 600mm between the Pit Floor and Buffer Striker or the lowest structural or Mechanical part, Equipment or Device installed. This clearance shall be available between the whole areas of the Platform except for
(i) Guide Shoe or Rollers, Safety Jaw Blocks, Platform Aprons, Guides or other equipments located within
300mm. measured horizontally from the sides of the Car Platform, and
(ii) Compensating Sheaves
Provided that in all the cases when the Car rests on it's fully compressed Buffer, there shall be a vertical clearance of not less that 50mm between any part of the Car and any obstruction of device mounted in the Pit.
(2) Top Car Clearance ► The vertical clearance between the Car crosshead and the nearest overhead obstruction within 500mm measured horizontally, to the nearest part ofthe crosshead when the Car Platform is level with the Top Landing shall not be less than 900 mm for the contract speed less than 1.5mi/s and1500 mm for the contract speed 1.5 mis or above.
► In case of oil or similar buffer used, Inspector ofLifts may permit such clearances as he may consider adequate for car & counterweight.