Viabilidade de modelos digitais de terreno em projetos de infraestrutura.

Abstract

Obtaining data that represent the real nature of the terrestrial topography is a subject discussed since the human being began to perform measurements capable of representing the field, in order to record and categorize these data for several purposes. In the course of the technological evolution, different methods of topographic data collection were developed, so that it was possible to improve the accuracy of these data and that the collection process became economically viable. In recent years, several databases made available free of charge are used to obtain digital terrain models (DTM), which contain parameters for the representation of the land surface, with the objective of analyzing, categorizing, updating and describing geographically referenced data. The databases provided help constantly the analysis of the terrain for professionals in the areas of architecture and engineering, enabling the prior understanding of the behavior of landconstruction, predicting situations of land movement and even preliminary estimate of the costs that the enterprise will result. Considering this technology, the present research intends to catalog and investigate the errors and estimates that can be made when using each type of field data collection method, verifying the possibilities of using digital terrain and data models collected from traditional topography, in the situations and conditions in which each type of study can be used, aiming the cost / benefit and the reduction of the presence of technical errors in the design of engineering projects.