因(yin)為(wei)在供水(shui)(shui)時,每(mei)層(ceng)樓使(shi)用(yong)(yong)都會(hui)分流(liu),越(yue)靠近低層(ceng),管道總體需(xu)要的水(shui)(shui)量(liang)越(yue)小,因(yin)此要做(zuo)變(bian)徑處(chu)理(li),以滿(man)足(zu)中高(gao)層(ceng)用(yong)(yong)戶有足(zu)夠的水(shui)(shui)量(liang)使(shi)用(yong)(yong),否則會(hui)出現搶(qiang)水(shui)(shui)現象,低層(ceng)的用(yong)(yong)戶用(yong)(yong)水(shui)(shui)很足(zu),高(gao)層(ceng)則用(yong)(yong)水(shui)(shui)不足(zu)甚至無水(shui)(shui)。