| 摘要 |
PROBLEM TO BE SOLVED: To provide an airtight structure of a connection part of a column and a floor capable of eliminating unevenness of airtight performance caused by workers and ensuring high airtight property by facilitating the work for insuring airtight property. SOLUTION: An airtight cover 8 provided with a column adhering part 5 having a column adhering face 4 having substantially same shape as a shape of an outer peripheral face 3 of a leg part 2 of the column, and a floor adhering part 7 having a horizontal floor adhering face 6 integrally formed at outer periphery of a lower end of the column adhering part 5 is used to adhere the column adhering face 4 of the airtight cover 8 on the outer peripheral face 3 of the leg part 2 of the column, and to adhere the floor adhering face 6 on a floor surface 9 around the column. When a brace 15 is attached to the leg part 2 of the column, the airtight cover 8 provided with a brace adhering part 18 is used to adhere the face 6 by putting the brace therebetween. When a column leg connector 16 connecting the leg parts 3 of the columns mutually is provided, the airtight cover 8 provided with a column leg connection adhering part 21 is used to adhere the face 6 on an outer peripheral face 19 of the column leg connector 16.
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