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The selection of cost-effective components of the building envelope plays a significant role in a sustainable building design solution. Therefore, in terms of effective decision-making, it is important to have a complete insight into construction and running costs throughout the lifespan of the building. A systematic building information modelling (BIM) approach as a new trend in the innovative approaches in the construction (AECO) industry provides appropriate support for improvement of environmental assessments. Our study presents a new approach to automated/semi-automated comprehensive energy and the whole life-cycle cost analysis of building envelope components using BIM, and, as such, it represents a novelty for Advanced Construction Project Management. It focuses on the sequence of steps required for evaluation of energy and economic assessment, from the basic 3D BIM model, through the energy and cost analysis, to the final evaluation and decision-making. The energy balance was calculated with dynamic simulation, the results of which formed the basis for the cost analysis. Economic assessment of construction and operating costs was performed by implementation of the cost-optimal methodology. Our proposed approach contributes to the environmental assessment of building envelope components throughout the life cycle and includes the economic valuation. The applicability of the systematic approach in our case study considered 24 different variants of building envelope components at three different U-values, namely U0 = 0.28 W/m2K for external wall, U0 = 0.20 W/m2K for roof, U1 = 0.15 W/m2K and U2 = 0.10 W/m2K. Sophisticated project BIM management software was used for the economic evaluation of all elements of the life-cycle costs (LCC). In summary, the main contribution of this approach is provision of a comprehensive and simple insight into all costs in a transparent way, because a 5D BIM model allows for optimal decision-making on appropriate energy and cost-efficient envelope components.

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The focus of this paper is to represent some important mobile computing potential which help tackle project collaboration and information dissemination problems. Especially in the construction industry where workers have no steady working places mobile computing is shown as a chance for optimising the traditional ways of organizing Construction Company. Special attention is given to the description of changing the current information system as well as to the hierarchical organization structure based on mobile computing. Applying the “reengineering” as a tool forward business reorganization, optimised network organizational structure for Construction Company is being designed. Using our flat organization structure project partners can decide directly about particular matters and thus optimal decision-making is ensured. Therefore, certain decisions can be made in due time and nearer to the point in the organization structure. As a result of study, our findings about the cost/time savings are represented

Sustainable development is a priority for the future of our society. Sustainable development is of particular importance to the Architecture, Engineering, and Construction (AEC) industry, both for new buildings and for the renovation of existing buildings. Great potential for sustainable development lies in the renovation of existing office buildings. This paper introduces a new framework for identifying the best set of renovation strategies for existing office buildings. The framework applies selected green building rating system criteria and cost-effective sustainable renovation solutions based on cost-benefit analysis (CBA), and thus provides a novelty in decision-making support for the sustainable renovation of office buildings at an early-stage. The framework covers all necessary steps and activities including data collection, determination of the required level of renovation, selection of the green building rating system, identification of impact categories and criteria, and final evaluation and decision-making using CBA. The framework can be used in conjunction with different systems and according to different regional characteristics. The applicability of the addressing procedure is shown through a case study of a comprehensive renovation of an office building in the city of Maribor.

In this paper, we are using the business process reengineering (BPR) concept together with the potentials of mobile information and communication technology (mobile ICT) to interpret the ability for better capturing of business changes that construction companies are faced with. Through our intensive examination of reengineering initiative in construction, we find that relatively low emphasis was placed on the opportunity to use information and communication technology (ICT) more progressively throughout the construction processes. We developed a methodological concept 'Reengineering of the construction process (RCP-model)' that captures the BPR philosophy as well as potentials of mobile ICT as technical background. Research assumptions were tested with the implementation of the proposed model in a concrete Construction Company in Slovenia. The reengineering project realization is defined from the viewpoint of the given implementation projects and exposure of the elements that affect adoption of BPR and enable evaluation of the attained results of company reorganization. Difficulties and milestones of the reengineering project, the importance of management and coordination of work are also stressed.

Today's information exchange in managing projects are to a great extent supported by information technology. Especially mobile computing potencials can significantly improve the information exchange in construction. This paper addresses some important mobile computing potencials which can help tackle project collaboration and information dissemination problems. Special attention is given to the organizational and mobility issues of construction projects which must be considered by implementing mobile computing in construction. The final objective of the paper is to show why should be further research on mobile computing more focused on identifying the weaknesses of the present project information exchange procedures and their optimisation according to the applied IT in order to employ all of its advantages. The paper, however resides on practical experiences, which have been accurnulated through a series of experimental projects called e-site.