Nataša Šuman

Automated continuous construction progress monitoring using multiple workplace real time 3D scans

Abstract In recent years, exponential growth has been detected in research efforts focused on automated construction progress monitoring. Despite various data acquisition methods and approaches, the success is limited. This paper proposes a new method, where changes are constantly perceived and as-built model continuously updated during the construction process, instead of periodical scanning of the whole building under construction. It turned out that low precision 3D scanning devices, which are closely observing active workplaces, are sufficient for correct identification of the built elements. Such scanning devices are small enough to fit onto workers’ protective helmets and on the applied machinery. In this way, workers capture all workplaces inside and outside of the building in real time and record partial point clouds, their locations, and time stamps. The partial point clouds are then registered and merged into a complete 4D as-built point cloud of a building under construction. Identification of as-designed BIM elements within the 4D as-built point cloud then results in the 4D as-built BIM. Finally, the comparison of the 4D as-built BIM and the 4D as-designed BIM enables identification of the differences between both models and thus the deviations from the time schedule. The differences are reported in virtual real-time, which enables more efficient project management.

Planning of Maintenance Cost for Business-Storage Facility Using BIM

The aim of this paper is to present case study of the use of BIM approach for planning of maintenance cost of a facility in the operation time of a real business-storage facility in Slovenia. The first part outlines general principles of FM and BIM. Next, the features of facility maintenance are described according to the current Slovenian legislation. In addition, several standards used in other countries, as the result of the mutual development of the FM and BIM, are introduced. After that, step-by-step procedures for planning of maintenance cost are exposed, namely from Element list for maintenance, determination of the lifetime, service measures and cost analysis to development of cost plan in tabular form. The presented cost plan is designed in a unique way in which cost analysis is performed by using BIM approach with linked data to 3D BIM model. Moreover, Construction Project Management Software (Vico Office) is applied. For the purpose of appraisal maintenance costs over the entire life of 60 years, cumulative costs are distributed over the years. Thus, the cost plan is made in tabular form in Excel, presenting visual overview of planned maintenance more explicitly.

Application of 6D Building Information Model (6D BIM) for Business-storage Building in Slovenia

The aim of this paper is to present an application of 6D building information modelling (6D BIM) on a real business-storage building in Slovenia. First, features of building maintenance in general are described according to the current Slovenian legislation, and also a general principle of BIM is given. After that, step-by-step activities for modelling 6D BIM are exposed, namely from Element list for maintenance, determination of their lifetime and service measures, cost analysing and time analysing to 6D BIM modelling. The presented 6D BIM model is designed in a unique way in which cost analysis is performed as 5D BIM model with linked data to use BIM Construction Project Management Software (Vico Office), integrated with 3D BIM model, whereas time analysis as 4D BIM model is carried out as non-linked data with the help of Excel (without connection to 3D BIM model). The paper is intended to serve as a guide to the building owners to prepare 6D BIM and to provide an insight into the relevant dynamic information about intervals and costs for execution of maintenance works in the whole building lifecycle.