【Daily Question】Utilities - Water Supply and Drainage - 20191209
Thread Content
The installation of fire hydrants in high-rise buildings shall comply with the following regulations; which one of them is incorrect? ( ) A. Fire hydrants should be of the same model and specification; the diameter of their nozzles should be 100 mm, the length of the hoses should not exceed 25 m, and the diameter of the nozzles on the fire hoses should be at least 19 mm. B. Each fire hydrant in a temporary high-pressure water supply system should be equipped with a button for directly starting the fire pump. C. A fire hydrant should be installed in the vestibule ahead of the fire elevator shaft. D. High-rise buildings should have a test fire hydrant equipped with a pressure display device on their rooftops; in areas with heating systems, it can be installed at the top exit or inside the water tank room. Answer: A
The installation of fire hydrants in high-rise buildings shall comply with the following regulations; the incorrect one among them is ( A ). A. Fire hydrants should be of the same model and specification; the diameter of their nozzles should be 100 mm, the length of hoses should not exceed 25 m, and the diameter of the nozzles on fire hoses should be at least 19 mm. B. Each fire hydrant in a temporary high-pressure water supply system should be equipped with a button for directly starting the fire pump. C. A fire hydrant should be installed in the vestibule ahead of the fire elevator shaft. D. High-rise buildings should have a test fire hydrant equipped with a pressure display device on their roofs; in areas with heating systems, it can be installed at the top floor exit or inside the water tank room
A. Fire hydrants should be of the same model and specification; the diameter of the hydrant nozzles should be 100 mm, the length of the hoses should not exceed 25 m, and the diameter of the nozzle tips of the fire hoses should be no less than 19 mm