SETTLEMENT MEASURING METHOD FOR ROAD SURFACES

PROBLEM TO BE SOLVED: To provide a method with good maintainability and long-term stability to measure the amount of settlement of road surfaces or the like. SOLUTION: A reference water bath 11 is buried under measuring points 102A and 102B on the surface 101 of a runway 100, and a settlement gage 12 is installed in a manhole 103 formed at a predetermined fixed position. The reference water bath 11 and the settlement gage 12 are connected with a connecting tube 13. The amount of settlement at the measuring points 102A and 102B can be measured by detecting changes in the level of the reference water surface of the reference water bath 11 with the settlement gage 12. Since the present invention is configured such that the reference water bath 11 with no moving parts and sensor parts is buried under the road surface and the settlement gage 12 with moving parts and sensor parts is installed at a fixed position, it can have good maintainability and long-term stability. COPYRIGHT: (C)2006,JPO&NCIPI