Sounding

Bin Wang drainage boards with a microwave sounding wire, high-performance drainage board, and depth-sounding instrument can directly inspect the construction depth together with the repeated sounding method. The range of deviation between the measurement accuracy and the actual measurement is controlled within 20cm, the acceptance sampling rate of construction quality is not less than 10%, and the plastic drainage board needs to be provided with the wires for electronic microwave sounding and the digital scale marks through spray printing. The sounding technology is conducive to ensuring the authenticity of the construction process data and increasing and improving the means of construction process supervision and quality management of projects. After drainage boards are inserted on site, a third-party quality inspection company can be entrusted with the random sampling inspection of the actual construction depth at a frequency of 10% of the total number of drainage boards. The electronic sounding instrument for testing needs to be calibrated, and if there is some doubt about the construction depth of drainage boards, the frequency and range of sampling inspection can be increased.