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1.就水力条件等方面的看法①雨污水管在满足自清流速的情况下所需要的纵坡随管径的增大而减小,而修改标准的意见洽与此客观规律相反,管径越大许可误差也越大,试计算如下表:
1. Viewpoints on hydraulic conditions, etc. 1 The longitudinal slope required for a rainwater sewer pipe to satisfy the self-cleaning flow rate decreases with increasing pipe diameter. The amendment to the standard's opinion is contrary to this objective rule. The larger the allowable error is, the more the calculation is as follows: