旧式平房一般为砖墙承重或木屋架承重,屋面多用灰、瓦建造。到了雨期,特别是遇到连雨天,灰和瓦处于水饱和状态,木屋架承受不了新增加的雨荷载,便可能发生突然性的破坏,致使柁(梁)、檩、椽折断,严重的还会造成屋顶坍塌、伤人毁物事故。这种事故在发生之前,总会有各种迹象的。居民在居住和使用中,只要留心观察,一些迹象是不难发现的。常见的迹象有:1.顶棚里边突然发生嘎吱、嘎吱的劈裂声响,这种声响可能是柁(梁)、檩、椽劈裂折断或已部分 Old-style cottages are generally load-bearing brick walls or load-bearing wooden trusses, and roofs are mostly constructed of gray and tile. In the rainy season, especially in the rainy days, if the ash and tile are in a state of water saturation, and the wooden roof frame cannot withstand the newly added rain load, sudden damage may occur, resulting in the breakage of the girders (beams), plutonium and plutonium. It will cause the collapse of the roof and cause accidents. There are always signs of this kind of accident before it happens. Residents in the residence and use, as long as careful observation, some signs are not difficult to find. The common signs are: 1. There is a squeaking and squeaking noise in the ceiling. The sound may be 柁 (beam), 檩, 椽劈 fracture, or part of it.