Application of terrestrial laser scanner for three dimensional as built building model

Abstract

The purpose of this study was for determine the application Terrestrial Laser Scanner (TLS) in the as-built model buildings in three dimensions based on the Level of Detail 3 (LOD3). Analysis on the measurement of the dimensions of the building was carried out to determine the accuracy of the final results obtained. The aim of this study is to generate a 3D model to help with asbuilt work, construction monitoring, and for the other user. TLS is used for data acquisition in this study is to achieve the measurement accuracy and more efficient. In addition to reducing hazardous and safety issues that occur in the field. The usual data acquisition methods needs labor intensive and it is time consuming. 3D Model as built building is resulting in Level of Detail 3 (LOD3), can be used for the management of construction, during operation and also in the maintenance phase related to engineering work. With the resulting model, this may increase work efficiency and provide motivation to the person in charge to ensure that work is carried out in accordance with the requirements of employers. Typically the two-dimensional (2D) as-built plans or data is very popular, but in fact it is not so efficient and is less friendly to be used by project owners, landlords and others to review the status of development projects and to see the changes that occur in the construction system. Based on the final results, the model has met the conditions set by CityGML, which is 0.5m accuracy for 3D model in the LOD3. Furthermore, the use of 'plug-ins' were proposed are necessary to enable the switch point cloud data to be processed in the modeling phase of the software modeling. In addition, it is also useful to reduce the size of raw data without reducing the quality of the resulting data.