Estudio comparativo de metodos para la obtencion de los factores topograficos.

Abstract

The factors L and S are obtained by plani-altimetry meassurements performed in the site of study by drawing profiles or by using contour line maps, which can be fulfilled through tachymetrical survey, or by grid levelling method. The aim of this work was to determine the accuracy of land representations by tachymetry and by grid levelling method compared to the real topography of the land, so as to be able to determine ih the one calculated by cross section method, not finding significant differences between both methods. So the use of the second method is advisable in conditions that are similar to the one of study and when there is no need to do a complete topographical survey.