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桁条是房屋建筑中的重要材料。过去,人们盖房时,桁条的两头都统统放在墙上,尽管是杉木、杂木、格木、时间久了,两头也易被腐蚀烂掉,致使房屋倒塌。为使桁条两头经久耐用,在盖房时,可把坚硬耐用的木材加工成“X”式佯,放在墙上,脊桁放“X”字架交叉点上固定好,其他桁条还要在“X”架上凿斜空,用硬木卡住“X”条,以免下滑。这样,桁条两头不紧贴土墙,不受泥土和石灰侵蚀,能延长使用时间。目前,海南省文昌县许多农村和乡镇盖房时都采用这种方法。
The purlin is an important material in the house building. In the past, when people built their houses, the two ends of the purlin were all placed on the wall. Despite being a long period of time, the firs, the logs and the logs were eroded and the houses collapsed. In order to make the two ends of the purlins durable, the hard and durable wood can be processed into “X” type rakes on the wall when the room is built. The ridges are fixed at the cross point of the “X” and other purlins are also fixed. To cut the slant on the “X” rack, stick “X” with hardwood to avoid slipping. In this way, the two ends of the purlins do not cling to the earth wall and are not eroded by soil and lime, which can extend the use time. At present, many rural and township houses in Wenchang County of Hainan Province use this method.