Tatjana Vilutienė

THE APPLICATION OF MULTI-CRITERIA ANALYSIS TO DECISION SUPPORT FOR THE FACILITY MANAGEMENT OF A RESIDENTIAL DISTRICT

Abstract The article deals with the problem of dwelling maintenance. In this paper the process of building maintenance in Lithuania is analysed, the activities of subjects carrying out maintenance work described, and a comparison of maintenance variants was made applying the methods WSM, WPM, AHP, Revised AHP and Topsis. A method of multi- criteria complex proportional evaluation of the projects was also applied for determining the efficient variant and the degree of its utility. The analysis of the application of the multi-criteria methods for solving the problems with multiple objectives was also made. In striving to prolong the existence of buildings the professional use of a property should be ensured. The article presents a model of property management with the participation of monitoring organisations. This model helps ensure a more effective facilities management process and the work quality in dwellings.

Decision model for selection of modernization measures: public building case

The aim of our study is to present the decision model for selection of optimal combinations of modernization measures. the presented algorithm of decision synthesis method comprises method for integrated significance determination of efficiency indicators and multiple criteria decision methods. the paper also presents the case study illustrating the application of proposed model. as the alternative modernization measures can generate many alternative combinations the decision tree model was proposed as an efficient tool facilitating the analysis of big data and included in algorithm. three multiple criteria decision support methods based on quantitative measurements included in algorithm used to increase the reliability of the decision. the proposed algorithm is very suitable for evaluation of modernization decisions of the building and enables decision-maker to select the best performing alternative in terms of energy consumption, cost of instalment and other relevant criteria.

Analysis of waterproofing defects and technology development for car parking roofs: Lithuanian case

Abstract This work presents the analysis of installation options of exploitable car park roofs offered by the designers, material manufacturers and suppliers and introduces the Lithuanian legislation with the requirements for this type of roofing. Reasons of the most frequently occurring defects have been examined and several options for correcting defects have been provided. The most cost-effective option for correcting the defect in question has been chosen. Practical measures for increasing the reliability of exploitable car park roofs have been proposed. The analysis has shown that at a minimum slope reliability of the exploitable roof coated with roller heat-welded materials is not guaranteed. The authors propose to tighten the requirements on car park roofing.

A method to predict change propagation within building information model

AbstractThis study examines problem of the management of design changes caused by the complexity of the design process and the lack of knowledge of all aspects of the design dependencies. This paper addresses the subject of design changes management in the context of a multidisciplinary collaborative environment of Building Information Modelling (BIM). Due to evolving role of BIM in designing of building projects and the increasing complexity of the design process a need to develop change management based on BIM methodology aroused. The application of BIM to construction projects has the potential to enhance the quality of information provided for making critical design decisions. Trusted change propagation is the key for successful change management. Paper describes developed method to predict the propagation of change through the building information model and provides the concept of visual technology to help designers to predict the change in the construction industry. The developed method includes the...

A quantitative evaluation of theoretical renewable energy potential of the building site

AbstractModern building design process is becoming more complex. Local conditions and future constructions are computer-simulated. The aim of this simulation is to evaluate theoretical RE potential for the successful and efficient exploitation of the new building. As usual, in the simulation process of local conditions, the assessment of the renewable energy potential is one of the key elements. This article presents and analyses the idea of the quantitative evaluation of renewable energy (RE) theoretical potential of the building site and the approach on how to prepare initial data file for further process of site energy development concept creation. The study describes a building site that is undergoing the RE evaluation in terms of thermodynamic and descriptive statistics characteristics. The applicability of the offered approach was verified in the case study. The specified evaluation of the combined energy fluctuation throughout the year provides new and potentially crucial information about the issu...

Comparative Analysis of Newly-Built Housing Quality in Poland and Lithuania

Abstract The Presented research aims to analyze the Lithuanian and Polish housing markets in terms of the quality of life in new residential buildings. The article presents the concept of customer satisfaction in construction and criteria that define the quality of dwellings; the benefits, consequences, merits and demerits of the assessment of customer satisfaction are also named. A survey of customer satisfaction helps to evaluate the quality of dwellings according to their technical and functional parameters, as well as the degree of cooperation between customers and developers/contractors. The customer satisfaction index (CSI) was calculated for both countries. The results are useful for developers, contractors, facility management companies and building users.

Forecasting the demand for blue-collar workers in the construction sector in 2020: the case of Lithuania

After 2020 all new buildings must be energy efficient, which means that the construction industry workforce must be prepared and up-skilled. Formal and informal continuing education must respond to these changes, which means the curriculum needs to be updated and supplemented with the necessary knowledge and skills. This article provides the forecasts for blue-collar worker demand by 2020 in the construction industry and the number of construction workers who should be up-skilled or have extra training to be able to build energy efficient buildings and to install the renewable energy systems. The need for blue-collar workers in the construction sector up to the year 2020 was estimated by the use of mathematical models and expert evaluation, as well as taking into account the Lithuanian economic growth forecasts for the year 2020, trends of employment changes in the construction sector, the impact of EU support to the national economy and other factors having significant impact on employment in the construction sector.