工业与民用建筑中,为防止因局部平面内的雨水顺着砌体流淌而污染外墙面等现象的发生,施工验收规范中规定,窗台、檐口、雨篷、阳台等部位必须做滴水线,切断雨水顺流的线路,使其自然下滴,以保护墙面、饰面。 In industrial and civil buildings, in order to prevent the occurrence of phenomena such as pollution of the external wall surface due to rain flowing in the local plane along the masonry, the construction acceptance standard stipulates that windowsills, cornices, awnings, balconies and other parts must be used as dripping lines. Cut off the flow of rain along the river, so that it drops naturally to protect the walls and finishes.