在高层建筑中,往往设有管线井,门口设200mm高的门槛。在大约10年前竣工的很多房屋建筑中,打开水电井的门(都是防火门,外开),会发现水电井道像电梯井道一样,从顶层至底层,一望到底,稍不小心一失足,就万劫不复,所以门应外开且设门槛,这样可以起到安全提示的作用,并且这类门平时都应上锁。因为水电井内无立足之处,对于进深较大的 In high-rise buildings, often with pipeline wells, the door set 200mm high threshold. In many buildings completed about 10 years ago, the hydropower wells’ doors (both fireproof doors and outdoes) were opened and the hydropower hoistways were found to be the same as the hoistway from the top to the bottom. It is beyond redemption, so the door should be out and set the threshold, so you can play a safety hint, and such doors should be locked usually. Because there is no foothold in the hydropower wells, for the larger depth