Fire protecting structure of channel portion of plastic piping in a fire partition

A fire protection structure for a channel portion of a plastic piping that extends through a hole formed in a fire partition, comprising:

• a refractory material filling a space between the plastic piping and an inner surface of the hole in the fire partition;
• support means positioned around the plastic piping and including a support region for supporting said refractory material relative to the outer surface of the plastic piping and for causing said refractory material to contact an outer surface of the plastic piping;
• intumescent material arranged between said support means and said plastic piping, said support means also including portions for supporting said intumescent material;
• and
• wherein the refractory material is provided at said support region of the support means so that the refractory material is caused to contact the outer surface of the plastic piping and fill the space between the plastic piping and the inner surface of the hole in the fire partition, whereby the support means positioned around the plastic piping with the intumescent material supported thereon, is fixedly attached to the fire partition by said refractory material, the intumescent material swelling when subjected to heat of a fire to reduce the size of an internal passage of the plastic piping.