Abstract：
Lightweight material was used after analysis on the fire-stopping construction position and relevant material and technical parameters, because it produces small pressure on beam, pipeline and pipeline thermal insulation layer and will not cause pipeline deformation. Fire coating board and expansion fireproof sealant were used and segment construction method was adopted for fire-stopping construction, realizing favorable airtightness and water tightness at the fire-stopping position. The 3-hour fire endurance specified in the design specification was successfully satisfied.
