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横断面测量精度的高低,非但关系到土石方量的准确性,而且影响施工质量。现介绍一种测法: 测量尺用2米长,5厘米宽,2厘米厚的木枋两条(一为竖尺,另一为平尺),在尺的正反两面每隔5厘米刻一划(逢5短划,逢10长划),仿照标尺的样子,每10厘米依次写上“0、1、2、……7、8、9”等号码,反面“0”从另一端写起,这样在使用时,不论哪一端着地,都能直接读数。
Cross-section measurement accuracy, not only related to the accuracy of earthwork, but also affect the construction quality. Is now introduced a test method: measuring scale with 2 meters long, 5 centimeters wide, 2 cm thick clogs two (one for the ruler, the other for the flat ruler), the ruler on both sides of the engraved every 5 cm A plan (every 5 shorts, every 10 long plan), modeled on the ruler like, every 10 cm followed by writing “0,1,2, ... 7,8,9” and other numbers, the reverse “0” from the other end Write, so that when in use, no matter which end to the ground, can be directly read.