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M. Guerrieri and G. Parla

Sustainability Practices in the Construction Industry, p. 654-660, ISBN 9780784412046, ASCE Conf. Proc. doi:10.1061/41204(426)80 6. L. BRUNO, G. PARLA, C. CELAURO. Image analysis for detecting aggregate gradation in asphalt mixture from planar images. Construction and Building Materials, Vol. 28, Issue 1, 2012; pp. 21-30. DOI:10.1016/j.conbuildmat.2011.08.007. 7. M. GUERRIERI, G. PARLA, F. CORRIERE. A new methodology to estimate deformations of longitudinal safety barrier. ARPN Journal of Engineering and Applied Sciences, ISSN 1819-6608, Vol. 8

Open access

F. Corriere, D. Di Vincenzo and M. Guerrieri

, B. XU, L.-L, Wang, Carrying Capacity Reliability of Railway Networks, Journal of transportation systems engineering and information technology, volume 11, issue 4, 16-21, ISSN:1009-6744, august 2011. 4. T.J. MLINARIĆ, K. PONIKVAR, Energy Efficiency of Railway Lines, Vol. 23, No 3 (2011), Promet - Traffic&Transportation, Vol. 23, No. 3, 187-193, 2011. 5. F. CORRIERE, R. BIONDO, G. SCIUMÈ, The choice between alternative solutions in uncertain conditions: the use of a suitable fuzzy methodology as a tool for the project optimisation of

Open access

M. Kruszyna

clustering of user perception to defi ne levels of service at signalized intersections. Journal of Transportation Engineering 129 (6), 657-663. 13. ZHANG, J.S., LEUNG, Y.W., 2004. Improved Possibilistic C-Means Clustering Algorithms. IEEE Transactions On Fuzzy Systems, 12 (2), 209-217. 14. LESKI, J., 2003. Towards a robust fuzzy clustering. Fuzzy Sets and Systems 137 (2), 215-233. 15. ALI, Y.M., ZHANG, L., 2001. A methodology for fuzzy modeling of engineering systems. Fuzzy Sets and Systems 118 (2), 181

Open access

J. Konior

., “Risk management perspective on the project lifecycle”, International Journal of Project Management, 1995, 13.3, pp. 145-149. 15. Yu J., Jeon M., Kim T. W., “Fuzzy-based composite indicator development methodology for evaluating overall project performance”, Journal of Civil Engineering and Management 2015, pp. 343-355. 16. Zavadskas E.K, , Turskisb Z., Tamošaitienec J., “Risk assessment of construction projects”, Journal of Civil Engineering and Management 2010, pp. 33-46.

Open access

I. Szer, E. Błazik-Borowa and J. Szer

Abstract

Work in unfavorable, changing environmental conditions negatively affects people working on scaffoldings used on construction sites, which may increase the risk of occurrence of dangerous situations. The purpose of this article is to show the scale of temperature changes which workers are exposed to. The paper compares examples of temperature measurements obtained from a metrological station and during tests on scaffoldings located in the Lodz and Warsaw regions. This article also presents the methodology of examining environmental parameters of the surroundings where employees work on scaffoldings. Analysis results show that high temperatures and significant temperature variations frequently occur on the scaffoldings, which leads to a lack of adaptability and consequently to tiredness or decreased alertness. Unfavorable environmental conditions can lead to behaviors which, in turn, can cause accidents.

Open access

B. Hoła and M. Szóstak

-280. 4. European Statistics on Accident at work (ESAW) Summary methodology. Eurostat Methodologies & Working papers, European Union, 2013. 5. EUROSTAT - European Commission - Database http://ec.europa.eu/eurostat/data/database (Retrieved April 2015). 6. Ivan W. H. Fung, Vivian W.Y. Tam, Tommy Y. Lo, Lori L.H.Lu, Developing a Risk Assessment Model or construction safety, International journal of Project Management. 7. Kassyk-Rokicka H., Statistics are not difficult. PWE, Warsaw 1986. 8. Lis T., Nowacki K

Open access

S. Stanisławek, P. Kędzierski and D. Miedzińska

Abstract

Hydraulic fracturing of rocks boosts the production rate by increasing the fracture-face surface area through the use of a pressurized liquid. Complex stress distribution and magnitude are the main factors that hinder the use of information gathered from in situ hydraulic fracturing in other locations. Laboratory tests are a good method for precisely determining the characteristics of these processes. One of the most important parameters is breakdown pressure, defined as the wellbore pressure necessary to induce a hydraulic fracture. Therefore, the main purpose of this investigation is to verify fracture resistance of rock samples fractured with the assistance of the most popular industry fluids. The experiments were carried out using a stand designed specifically for laboratory hydraulic fracturing. Repeatable results with a relative error within the range of 6-11% prove that the experimental methodology was correct. Moreover, the obtained results show that fracturing pressure depends significantly on fluid type. In the case of a water test, the fracturing pressure was 7.1±0.4MPa. A similar result was achieved for slickwater, 7.5±0.7MPa; however, a much lower value (4.7±0.5MPa) was registered in the case of carbon dioxide.

Open access

J. Sousa

Abstract

This article aims to evaluate the potential application of prefabricated panels in energy retrofit of facades in the Portuguese building stock. The fundamentals of this study were part of Annex 50, which was an international ECBCS IEA project, with the purpose of developing an innovative concept of building renovation for the most representative buildings based on prefabricated systems. To analyze the potential application of energy retrofit using prefabricated panels, was important to know the reality of the existing building stock and its morphology. To know the reality of the building stock, an analysis was done based on the existing statistical data and to find the most representative residential buildings, target of the study, three criteria were defined: buildings built before 1990, with 2 to 6 floors and with renovation needs in the exterior envelope.

In the absence of statistical information about buildings morphology, a research work was done in the field. During the collection of data a methodology was developed in which each opening was classified according to a code with three parameters. In the end of the classification, 29 final codes were achieved and was verified that three types of panels have a higher probability of being applied.

Open access

Mohammadreza Yadollahi, Azlan Adnan and Rosli Mohamad Zin

Abstract

Rapid Visual Screening (RVS) method for buildings was originally developed by the Applied Technology Council (ATC) in the late 1980’s for potential seismic hazards. This is a simple and almost a quick way of assessing the building seismic vulnerability score based on visual screening. The logarithmic relationship between final score and the probability of collapse at the maximum considered earthquake (MCE) makes results somewhat difficult to interpret, especially for less technical users. This study is developed to improve the simplicity and usefulness of RVS methodology to determine the numeric scores for seismic vulnerability of buildings using vulnerability functional form. The proposed approach applies the existing method in FEMA 154 (2002) for calculating the building rank based on RVS method. In this study RVS scores are used to evaluate populations of buildings to prioritize detailed evaluations and seismic retrofits. The alternate non-logarithmic format of scoring scheme is much better meeting the needs of the project managers and decision makers, as they require results that are easier to understand. It shows the linear equivalent of RVS final scores which is consistent with the existing ranking systems used in the buildings management program such as budget allocation decision making. The results demonstrate that the weight determined for the factor of “Region Seismicity”, which is 0.4033, has the highest contribution to seismic vulnerability scores of buildings. The applicability of the proposed method is demonstrated through a hypothetical example to rank ten seismically vulnerable buildings.

Open access

A. Życzyńska and T. Cholewa

governments assisted industrial enterprises in achieving energy-saving targets, Energy Policy, 66, 170–184, 2014. 11. Decree of Minister of Infrastructure, (2008), On the methodology of energy characteristics calculations of a building, housing unit or a building part being independent as a technical-usable whole and the procedures to prepare the samples of their energy characteristics, (Jounal of Laws No. 201/2008, item1240), Available on 6.11.2008, (in Polish). 12. Decree of Minister of Infrastructure, Construction and Maritime Economy, (2013), Modifying the