'(= (Counterweight_Overtravel ?X) (- (Hoistway_Top_Landing_To_Underside_Machine_Beam ?X) (+ (Deflector_Sheave_Protrusion ?X) (+ (Counterweight_Buffer_Footing_Channel_Height ?X) (+ (Counterweight_Buffer_Blocking_Height ?X) (+ (Counterweight_Buffer_Height (Elevator.Counterwtbuffer ?X)) (+ (Counterweight_Runby ?X) (- (Counterweight_Frame_Height ?X) (Hoistway_Pit_Depth ?X)))))))))