As cracking pressure is one of the basic mechanical proper is of presrs- sed co crete water pipe, it is necessary to the formula for calculation of cracking pressure which is a measurement of working capability of pressure water pip.

• “开裂压力”是预应力混凝土输水管的一项基本力学强度指标,为此,探讨一下衡量压力水管工作能力的“开裂压力”计算公式,是十分必要的。