A bed-plant for patients in a hospital including rails fastened horizontally to walls of the hospital selected for the installation of bedsteads which each have bracket elements detachably supported by said rails with a plurality of said bedsteads so connected to the rails on a given one of said walls. A plurality of carriages with lifting means for transporting and lifting or lowering said bedsteads as desired and further carriages for transporting empty and upwardly tilted ones of said bedsteads.