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HOLLOW CONCRETE BLOCK FUNCTIONING AS BASEMENT AND FOUNDATION AT GROUND SURFACE SIDE FOR UPPER BUILDING AS A SEPARATE PORTION, AND METHOD OF FASTENING SINGLE BLOCK UNITS TOGETHER, AND FASTENING METHOD WITH UPPER BUILDING
HOLLOW CONCRETE BLOCK FUNCTIONING AS BASEMENT AND FOUNDATION AT GROUND SURFACE SIDE FOR UPPER BUILDING AS A SEPARATE PORTION, AND METHOD OF FASTENING SINGLE BLOCK UNITS TOGETHER, AND FASTENING METHOD WITH UPPER BUILDING
PROBLEM TO BE SOLVED: To provide a foundation surface and a basement for an upper building as a separate portion by fastening and installing hollow concrete blocks as single block units on the top surface of a reinforced concrete slab foundation on the job site. SOLUTION: Adjacent hollow blocks 01 to 09D are fastened together by using fastening bolts a71 and b72 in fastening holes 13. The upper building as a separate portion is fastened by using foundation bolts a81, foundation bolts b82 and foundation nuts 83 or the like.
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