Re-establishment of Property Boundary using Geomatics Techniques

Abstract

This study examined a parcel of land situated at Isheri-Olofin Community in Shomolu local government area of Lagos State whose boundary locations and lines have been obliterated with a view of re-establishing them to the required accuracy and standard using Geomatics techniques. The reconnaissance survey of the study area was carried out, and three (3) out of twenty (20) property boundary beacons were identified. The in situ check performed on the three beacons showed that they were in their original boundary locations. The three property beacons were used to relocate the positions of the remaining seventeen obliterated beacons using Geomatics instruments and conventional methods. The seventeen property beacons were re-established. In order to determine the accuracy of the re-established boundary beacons, a perimeter survey was carried out with a closed traverse method, and it commenced from three government control beacons which were within the study area. The in situ check of the three government control beacons was carried out prior to the commencement of the theodolite traversing. The acquired data were processed, the accuracy of the boundary survey was computed, the processed data was modelled using AutoCAD software and the property boundary plan was produced. The results of the study revealed that three of the property boundaries were in their original locations and seventeen (17) of them were obliterated. The obliterated property beacons in the study area were successfully re-established to the required standard and accuracy. The accuracy of the entire property boundary, which was within the allowable accuracy limits for 3rd order traverse survey, was 1:56,470. This indicates that the obliterated beacons were re-established accurately, their boundary locations and lines were well defined. The property boundary plan, which shows the twenty boundary beacons and contains mathematical and documentary evidence for the property description of the study area was produced.