Structural blocks for building a basement, block manufacturing method, block transporting method, and block installing method

A basement structure comprising:

• first and second basement units;
• a foundation on which said first and second units are disposed;
• said first and second units having a common generally horizontal axis;
• preclusion parts on said first unit and said foundation engaging each other so as to preclude translatory movement of said first unit relative to said foundation in a first direction parallel to said axis;
• said second unit having a first slanted surface extending at an obtuse angle relative to said axis;
• said foundation having a second slanted surface extending at an obtuse angle relative to said axis;
• said first slanted surface engaging said second slanted surface such that said engaging slanted surfaces provide a force component to said second unit extending parallel to said axis and directed in said first direction;
• said force component urging said second unit in said first direction toward said first unit while said first unit is precluded from translatory movement relative to said foundation in said first direction by said preclusion parts.

A basement structure comprising:

• first and second basement units, at least one of said first and second basement units comprising:
• a reinforced concrete lower structural block having a floor portion and surrounding walls;
• and
• at least one reinforced concrete upper structural block having surrounding walls and the same shape as the lower structural block in plan view, the upper structural block being stacked on top of the lower structural block with a seal member placed between the top end of the lower structural block and the bottom end of the upper structural block;
• a foundation on which said first and second units are disposed;
• said first and second units having a common generally horizontal axis;
• preclusion parts on said first unit and said foundation to preclude translatory movement of said first unit relative to said foundation in a first parallel to said axis;
• said second unit having a first surface extending at an obtuse angle relative to said axis;
• said foundation having a second surface extending at an obtuse angle relative to said axis;
• said first surface engaging said second surface such that said engaging surfaces provide a force component to said second unit extending parallel to said axis and directed in said first direction;
• said force component urging said second unit in said first direction toward said first unit while said first unit is precluded from translatory movement relative to said foundation in said first direction by said preclusion parts.

A basement structure comprising:

• first and second basement units;
• said first and second units having a common generally horizontal axis;
• a foundation on which said first unit is disposed;
• said first unit being disposed on said foundation so as to preclude translatory movement of said first unit relative to said foundation in a first direction parallel to said axis;
• said second unit having a first slanted surface extending at an obtuse angle relative to said axis;
• said foundation having a second slanted surface extending at an obtuse angle relative to said axis;
• said first slanted surface engaging said second slanted surface such that said engaging slanted surfaces provide a force component to said second unit extending parallel to said axis and directed in said first direction;
• said force component urging said second unit in said first direction toward said first unit while said first unit is precluded from translatory movement relative to said foundation in said first direction.

A basement structure comprising:

• a first basement unit including:
• a reinforced concrete lower structural block having a floor portion and surrounding walls;
• and
• at least one reinforced concrete upper structural block having surrounding walls and the same shape as the lower structural block in plan view, the upper structural block being stacked on top of the lower structural block with a seal member placed between the top end of the lower structural block and the bottom end of the upper structural block;
• a plate like foundation panel on which the first basement unit is mounted, the foundation panel having at least one retaining groove running parallel to a bottom edge of the first basement unit, and the lower structural block having a bottom projection which is so located and shaped as to slide into and fit in position in the retaining groove in the foundation panel;
• the retaining groove being obliquely cut on one side to form a slant surface inclining downwardly from an upper edge of the retaining groove toward its narrower bottom, and the bottom projection 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;
• a second basement unit mounted on the foundation panel side by side with the first basement unit along a direction intersecting the lengthwise direction of the bottom projection, wherein the two 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 two basement units press against each other with the openings seal member placed in between when the bottom projection is fitted into the retaining groove.