Implantação de rede geodésica de alta precisão para o controle horizontal: ajustamento pelo método paramétrico área de estudo: parcela residencial, Bairro de Mapulene

Abstract

Horizontal and vertical dimensional control is fundamental in civil engineering to ensure compliance with projects. Geodesy plays a crucial role in this process by providing vertices with high-precision coordinates. This study investigates the establishment of a high-precision geodetic network, using the parametric method, to support civil engineering on a residential plot in the Mapulene neighborhood, KaMavota Municipal District, City of Maputo Municipality. The methodology involved the materialization of six vertices, whose initial coordinates were obtained using a GNSS receiver mobile device with an accuracy of 12 cm. The distances between the vertices were measured with a Trimble M5 Total Station (2mm precision). The parametric adjustment, implemented in the Adjust program, refined the coordinates. The quality analysis, with a significance level of 95%, revealed variances of 2.901 and 2.942, resulting in confidence intervals ranging from 0.22 to 9.35 and 0.83 to 12.83. The results demonstrate the effectiveness of the parametric method in obtaining precise horizontal coordinates, capable of providing a reliable reference for dimensioning and dimensional control in civil engineering projects