PILE AND MEASURING METHOD FOR ORIENTATION OF PILE

PURPOSE:To facilitate an orientation measuring work by a method wherein a hole for measuring orientation is formed along the longitudinal direction of a pile body, the tip part of the hole for measuring orientation is closed, the base end part thereof is opened, and a light emitting device is disposed at the inside of the tip part with the device pointing to the base end part. CONSTITUTION:Internal and external engaging connection members 3a and 3b of a connection member 3 are attached to a steel pipe pile 1 in a position where the connection members are spaced away from each other at a 180 deg. in the same direction. A hole (h) for measuring orientation is formed in a manner that the through-direction of the internal space of the member 3a is extended along the longitudinal direction of the pile 1. A cover 4 is welded to the tip part of the member 3a, a light emitting device 5 is disposed in the cover 4, and a light source body 5a is fixed to the central point of the inside of the cover 4. The collimation central point of a telescope 6 is set to the central point of the opening of the hole through the opening of the hole (h) as the light source body 5a is caused to emit light. The interior of the tip part of the member 3a is observed from below in a vertical direction being a reference angle direction. A relative position between the central point of the opening of the base end part and the light source body 5a is measured by means of the telescope 6, and orientation of a column 1 is decided from a measuring result and a reference angle.