混凝土配合比专用计算尺是一种供工地基层使用的简便工具。原设计为圆盘形状,后改为直尺状,是在配合比三个参数之间找出函数关系,然后结合天津市历年实际数据,整理做成对数加减适于滑尺(或转盘)运算的形式。此尺完成后曾小批量制做几百支,命名为“建工701混凝土配合比计算尺”,在天津市一定范围内试用,反映较好。但是十年浩劫,工地管 The special scale for concrete mix ratio is a simple tool for the use of site base. The original design was a circular disk shape and was later changed to a straight ruler. It was to find out the functional relationship between the three parameters and then combined with the actual data of Tianjin over the years to make a logarithmic addition and subtraction suitable for the slide rule (or turntable). ) The form of the operation. After the completion of this ruler, it had made hundreds of small batches and named it “Computation Rule for Construction Workers’ 701 Concrete Mixture”. It was tried in a certain range in Tianjin and reflected a good response. But ten years of havoc, site management