Abstract: A low-temperature/cryogenic liquid-storage structure has an inner tank liner made of conventional low-temperature/cryogenic tank-quality plates with structural members that provide flexibility. The plates are mounted on connectors that accommodate movement of the liner with respect to the bearing wall. The plates have a thickness of between 1/16? and ½? and a surface area of at least 100 square feet. The structural members are conventional construction materials that have a wall thickness of more than 1/16?. Load-bearing insulation extends between the outer surface of the inner tank liner and the inner surface of an outer bearing wall that is impervious to vapor.