A Concept to Assess the Economic Importance of the On-Site Activities of ETICS
Construction technology and on-site construction activities have a direct influence on the life cycle costs of energy efficiently renovated apartment buildings. The systematic inadequacies of the External Thermal Insulation Composite System (ETICS) which occur during the construction phase increase the risk for all stakeholders, reduce mechanical durability and increase the life cycle costs of the building. The economic effect of these shortcomings can be minimised if the risk of the most significant on-site activities is recognised. The objective of the presented ETICS economic assessment concept is to evaluate the economic influence of on-site shortcomings and reveal their significance to the foreseeable future repair costs. The model assembles repair techniques, discusses their direct cost calculation methods, argues over the proper usage of net present value over the life cycle of the building, and proposes a simulation tool to evaluate the risk of on-site activities. As the technique is dependent on the selected real interest rate, a sensitivity analysis is anticipated to determine the validity of the recommendations. After the verification of the model on the sample buildings by the industry, it is expected to increase economic rationality of resource allocation and reduce high-risk systematic shortcomings during the construction process of ETICS.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340286Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 387
 V. Sulakatko, I. Lill, E. Soekov, R. Arhipova, E. Witt, and E. Liisma, “Towards Nearly Zero-energy Buildings through Analyzing Reasons for Degradation of Facades,” Procedia Econ. Financ., vol. 18, no. September, pp. 592–600, 2014.
 P. Gluch and H. Baumann, “The life cycle costing (LCC) approach: A conceptual discussion of its usefulness for environmental decision-making,” Build. Environ., vol. 39, no. 5, pp. 571–580, 2004.
 W. Li, J. Zhu, and Z. Zhu, “The Energy-saving Benefit Evaluation Methods of the Grid Construction Project Based on Life Cycle Cost Theory,” Energy Procedia, vol. 17, pp. 227–232, 2012.
 D. G. Woodward, “Life cycle costing—Theory, information acquisition and application,” Int. J. Proj. Manag., vol. 15, no. 6, pp. 335–344, 1997.
 R. M. Skitmore and V. Marston, Cost modelling. Taylor & Francis, 1999.
 R. Vahidi and D. Greenwood, “Project Trade-Off Decisions The Gap between Reality and the Academic World,” 18th CIB World Build. Congr., no. TG65 and W065-Special Track, pp. 468–478, 2010.
 A. J. G. Babu and N. Suresh, “Project management with time, cost, and quality considerations,” Eur. J. Oper. Res., vol. 88, no. 2, pp. 320–327, 1996.
 G. Harvey, “Life-cycle costing: a review of the technique,” Manag. Account., vol. October, pp. 343–347, 1976.
 R. I. Carr, “Cost-Estimating principles,” J. Constr. Eng. Manag., vol. 115, no. 4, pp. 545–551, 1989.
 G. Wong, E. T. T., and Norman, “Economic Evaluation of Materials Planning Systems for Construction,” Constr. Manag. Econ., vol. 15, pp. 39–47, 1997.
 V. Sulakatko, I. Lill, and E. Liisma, “Analysis of On-site Construction Processes for Effective External Thermal Insulation Composite System (ETICS) Installation,” Procedia Econ. Financ., vol. 21, pp. 297–305, 2015.
 Fraunhofer IRB Verlag, “WTA Merkblatt 2-13,” 2015.
 B. Amaro, D. Saraiva, J. de Brito, and I. Flores-Colen, “Statistical survey of the pathology, diagnosis and rehabilitation of ETICS in walls,” J. Civ. Eng. Manag., no. June, pp. 1–16, 2014.
 M. Krus and H. M. Künzle, “WTA-Journal 2/03 S. 149-166 Untersuchungen zum Feuchteverhalten von Fassaden nach Hydrophobierungsmaßnahmen M. Krus, H.M. Künzel,” Wta, pp. 149–166, 2003.
 E. Cziesielski and F. U. Vogdt, Schäden an Wärmedämm-Verbundsystemen, 2nd ed. Stuttgrat: Fraunhofet IRB Verlag, 2007.
 R. Kussauer and M. Ruprecht, Die häufigsten Mängel bei beschichtungen und WDVS. 2011.
 H.-H. Neumann, Praxis Handbuch Wärmedämm-Verbundsysteme. 2008.