【Daily Question】Utilities - Water Supply and Drainage - 20200101

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An office building in a school, with a building height of 48.60 m and a total construction area of 24,638.0 m2. The building is equipped with a fire hydrant system and an automatic sprinkler system for fire suppression. According to calculations, the water consumption of the automatic sprinkler system is 26.0 L/s. All water required for firefighting, both indoors and outdoors, is stored in a fire tank located in the basement; therefore, the effective volume of this fire tank is ( ) m3. A.237.6       B.309.6        C.381.6       D.525.6  Answer: C is the correct answer. In accordance with Article 7.2.2 and Table 7.2.2 of the current Code for Fire Protection Design of High-Rise Civil Buildings, as well as Article 7.3.3 regarding the duration of a fire, the building in question is a regular office building with a height of no more than 50 m. The water flow rate required for indoor fire hydrants is 20 L/s, and that for outdoor fire hydrants is also 20 L/s. The duration of the fire is 2 hours; therefore, the effective volume of the fire water tank should be: v = 20×3.6×2 + 20×3.6×2 + 26×3.6×1 = 381.6 m3.