Patent ID: 8297885

Claim:
A method of erecting a building structure on a water basin, the water basin having a water level and a basin floor and located in a preset site having a site depth, the method comprising: floating at least one prefabricated pan-shaped block to the preset site, wherein said block has a height higher than the site depth, and wherein said block comprises a base member having a perimeter, a bottom, and walls that embrace said perimeter in a manner to resist the introduction of air or water to form a working area; submerging said block onto the basin floor by filling at least a part of said working area with water; fixing said block on the basin floor such that at least part of said block is located above the water level; removing water from parts of the working area; erecting a building structure on said base member wherein the building structure is erected on the parts of the working area where the water was removed; fixing said block against a displacement relative to the basin floor and against further submergence into the ground; and securing upright process pipes having a height exceeding said site depth and spaced over said working area through holes of said base member, by installing piles into the ground through said pipes and dismantling said pipes.