| 摘要 |
PROBLEM TO BE SOLVED: To provide a vertical hole curing cover material which is mounted in a vertical through hole on a building site easily and definitely and which covers the through hole with a cover and is cured in safety. SOLUTION: This vertical hole curing cover material 11 is formed with a steel plate or a metal plate in stead of the steel plate so as to cover a vertical through hole on a building site and cure. A plurality of bendable cut-off sections 12 and 13, which are bendable in conformity with at least two standard size dimensions of pipe materials used as a sleeve pipe for the formation of the vertical through hole, are formed for every equal central angle where uneven reinforcing ribs 18, 19 and 20 are formed by throttling work, thereby forming the cut-off sections 12 and 13 so that they may be bent and brought in contact with the inner peripheral surface of the vertical through holes. |
