【Daily Question】Utilities - Water Supply and Drainage - 20200311

Thread Content

This post was last edited by hesonchang214 on 2020-3-13 at 17:16. Among the following statements regarding the installation of rainwater inlets and gutters on building roofs, which one does not conform to the current \"Code for Design of Building Water Supply and Drainage\"? (   )   A. Roof rainwater drainage systems with different designed drainage flow patterns should use the same downspouts. B. When roof rainwater pipes are designed for pressure flow, the downspouts in the same system should be located at the same horizontal level. C. Gutter sections should be separated by expansion joints, settlement joints, and deformation joints. D. The slope of gutters should not exceed 0.003. Answer: A. Options B, C, and D respectively conform to Articles 4.9.13, 4.9.17, and 4.9.18 of the current “Code for Design of Building Water Supply and Drainage Systems”. Option A does not comply with the provisions of Article 4.9.14 of the current Code for Design of Building Water Supply and Drainage. Rainwater inlets are important devices for controlling the drainage of rooftops, and different types of rainwater inlets should be selected based on specific circumstances.  Answer: D is the correct answer. Options A, B, and C respectively comply with Article 4.8.2, Paragraph 1, Article 4.8.2, Paragraph 3, and Article 4.8.2, Paragraph 4 of the current \"Code for Design of Building Water Supply and Drainage\". Option D does not comply with the provisions of Article 4.8.2, Paragraph 6, of the current Code for Design of Building Water Supply and Drainage. The depth from the bottom of the oil separator outlet pipe to the bottom of the tank shall not be less than 0.6 m