METHOD TO DETERMINE DEPTHS OF THE LOCAL AND THE GEMETHOD TO DETERMINE DEPTHS OF THE LOCAL AND THE GENERAL EROSIONS AT RECONSTRUCTION AND OPERATION OF NERAL EROSIONS AT RECONSTRUCTION AND OPERATION OF A BRIDGE A BRIDGE

摘要

Method for determining the depths of the local and the general erosion at reconstruction and operation of a bridge comprises an installation of floaters-integrators near each support of the bridge and in between of those, with performance of air-photo survey of the bridge by fixed distances between the bridge and the points of the liquid-integrator emergence on the surface, with making a stereoscopic model of the bridge by the results of the survey, this from one obtains the needed data to calculate the depth of the stream by formula and to calculate the depth of the general and the local erosion by formula: .