Liquefied hydrocarbon gas storage tank with unlined concrete walls

摘要

A liquefied hydrocarbon gas storage structure is provided having inner (2) and outer (4) unlined concrete walls. The walls are formed by slipforming and are cyclindrical in form. The walls are post-tensioned to resist the pressure exerted by the gas stored in the tank. The inner wall can be arranged to be free to move relative to the outer wall. Further, the walls can ideally be formed simultaneously by slipforming and the roof of the structure is then erected after the walls have been completed.