EPOC

Unscientificity of percentage sampling and fixed sampling;

百分比抽样和固定数抽样的不科学性

This paper takes the sampling method used in rebound method as an example to analyze the percentage sampling based on the maximum absolute error and the maximum relative error theory and concludes that this method is not reasonable.

混凝土构件检测时,一般采用百分比抽样的方式。

This paper introduced in detail the characteristics of OC curve evaluation sample program as well as its law of change, analyzed the disadvantage of percentage sampling and double percentage used in the current code by utilizing the OC curve, suggested to use more reasonable sample program in the test of existing hours building structure.

本文详细介绍了OC曲线评价抽样方案的特点及其变化规律,运用OC曲线分析了现行规范所采用的百分比和双百分比抽样方案的缺点,建议在既有房屋结构检测中采用更为合理的抽样方案。