FIRE PREVENTION MEASURE STRUCTURE AND FIRE PREVENTION MEASURE UNIT

摘要

PROBLEM TO BE SOLVED: To provide a through-hole fire prevention measure structure capable of easily securing necessary fireproof performance without use of a high-performance thermal expansion material.SOLUTION: A fire prevention measure structure is provided on the side of an outer surface 3a of a division body 3 corresponding to a gap G between a through-hole 3H of the division body 3 and a long body 4 inserted therethrough. A thermal expansion material 6 is arranged around the long body 4. A thermosetting material 7 is arranged around the thermal expansion material 6. An annular holding frame 20 arranged in the state of covering at least the periphery of the thermosetting material 7 is fixed to the outer surface 3a of the division body 3.SELECTED DRAWING: Figure 2