a transportable apparatus for shelter comprising two sections , a base section and a top section . the base section and the top section have cavities that can be filled with water or are pre - filled with foam . the top section may be cone - shaped or dome - shaped , and is dimensioned to be placed on the base section . after the top section is placed on the base section , the top section can be secured to the base section via bolts . finally , both the top section and bottom section are divided into sections such that if one section develops a leak the other sections remain unaffected .