'(= (Counterweight_Bottom_Reference ?X) (+ (* 0.1 (Hoistway_Travel ?X)) (+ 6 (- (Hoistway_Pit_Depth ?X) (+ (Counterweight_Buffer_Footing_Channel_Height ?X) (+ (Counterweight_Buffer_Blocking_Height ?X) (Counterweight_Buffer_Height ?X)))))))