Piping and Valves Knowledge: [Question of the Day] 2011-01-20

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This post was last edited by superkiller0305 on 2011-1-20 at 18:27. Multiple-choice question: Which of the following are factors to be considered in the design of supports for buried pipelines? ( ) A. Presence or absence of groundwater B. Angle of internal friction of the soil C. Unit weight of the soil D. Bearing capacity of the foundation E. Depth of soil covering above the pipeline surface. 1) All participants will receive a reward (usually 5 points for correct answers, 3 points for incorrect answers, 1 point for answers that are not hidden; additional points may be given to those who provide detailed discussions)； 2) Please hide your replies; the method to do this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit the replies after posting them. 3) This question will be closed the next day or when a new daily question is released. 4) Due to my limited skills, there may be shortcomings in terms of rationality; I kindly ask all experts to point them out promptly! 5) Answer: ABCDE