Patent ID: 6032421
Filing Date: 2000-03-07
Classification: E02D,E04B,E04G

Abstract:
A basement structure comprising:a reinforced concrete first basement unit having a floor portion and surrounding walls;a reinforced concrete second basement unit having a floor portion and surrounding walls;a platelike foundation panel on which the first and second basement units are mounted side by side with each other, the foundation panel having at least one retaining groove in which bottom projections formed on the bottom of the first and second basement units can slide and fit in position;wherein the retaining groove is obliquely cut on at least one side to form a slant surface inclining downward from an upper edge of the retaining groove toward its narrower bottom, and at least one of the bottom projections is obliquely cut on its side corresponding to the slant surface of the retaining groove to form a slant surface having the same angle of inclination as the slant surface of the retaining groove;wherein the first and second basement units have openings formed in their facing walls and an opening seal member is placed between the facing walls to surround the openings;and wherein the slant surface of the retaining groove and the slant surface of the bottom projection are so arranged that the first and second basement units press against each other with the opening seal member placed in between when the bottom projections are fitted into the retaining groove.