摘要:
A guide method for guiding a device that is designed to insert elements into the ground in order to make a structure, the method comprising the following steps: establishing topographical points and determining the coordinates of these points in an X, Y, Z frame of reference; putting a measuring station in place in the vicinity of the structure and determining the X, Y, Z position of said measuring station with reference to one or more topographical points; determining, by means of said measuring station, the distance and the angle between said insertion device and the measuring station; calculating the position of the device by means of the measured distance and the known position of the measuring station; displacing the insertion device so that said elements are in register on the insertion axis with given positions where the elements are to be inserted into the ground.
摘要:
A method of constructing a rail track on a track-receiving concrete slab provided with channels serving to receive the rails of the rail track, wherein, after the concrete forming the track-receiving slab has set, it comprises at least the following steps: a) the stretches of rail are put in place above the channels in the track-receiving slab, each rail having a foot coated with a casing of resilient material; and b) the foot as coated with its casing is inserted into the channel by force.