METHOD FOR MEASURING BUILD-IN ERROR OF STEEL PIPE, AND STEEL PIPE

PROBLEM TO BE SOLVED: To provide a measuring method which can measure the vertical accuracy of a reversely-driven support inserted into the ground without excavating the ground when constructing a building by a reverse drive method. SOLUTION: In the measuring method devised for measuring a build-in error of the reversely-driven support 10 which is equipped with a pillar 20 formed of a steel pipe 21, a pile 30 connected to the lower side of the pillar 20 and a base plate 40 provided between the pillar 20 and the pile 30, a mark is given to a position on the base plate 40 where a passing core passes when the reversely-driven support 10 is correctly built in, and the position of the reversely-driven support 10 built in the ground 1 immediately above the mark of the base plate 40 is specified by a laser plummet instrument at the ground height, so that a distance between the passing core and the specified position immediately above the mark is measured at the ground height. COPYRIGHT: (C)2011,JPO&INPIT