Czech Journal of Civil Engineering https://cjce.cz/journal <p>The Czech Journal of Civil Engineering is an online scientific journal whose goal is to publish high-quality original scientific contributions by researchers, academics and doctoral students based on an open and easily accessible platform.</p> <p>The Czech Journal of Civil Engineering allows publishing in the following fields of civil engineering:</p> <ul> <li>Architecture</li> <li>Building Construction</li> <li>Building Physics and material engineering</li> <li>Construction digitalization, automation, and robotics</li> <li>Construction Management</li> <li>Geodesy and Cartography</li> <li>Geotechnics</li> <li>Green construction and sustainable built environment</li> <li>Heating, ventilation and air conditioning</li> <li>Modern techniques of construction including BIM</li> <li>Structural economics</li> <li>Structural engineering and road structures</li> <li>Technology and mechanization in civil engineering</li> <li>Urban planning and public spaces</li> <li>Water management and water structures</li> </ul> <p>and other related topics.</p> Ing. Václav Venkrbec en-US Czech Journal of Civil Engineering 2336-7148 <p><strong>Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License</strong></p> <p>Articles published in Czech Journal of Civil Engineering are licensing using <strong>Creative Commons License</strong>. Except where otherwise noted, individual articles in the Czech Journal of Civil Engineering are licensed under a <a href="https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)</a>.</p> CONSTRUCTION OF ROPEWAYS IN SLOVAKIA USING HELICOPTERS https://cjce.cz/journal/article/view/92 <p>Ropeways usually provide access to sites that are not accessible by any other types of transport. Due to this fact, the construction of ropeways is technologically and logistically extremely demanding. The construction site is situated mostly in exposed terrain, which often does not allow the use of conventional construction machinery in their construction. In this case, it is advisable to use means of transport that are not dependent on the character of the terrain - helicopters. Helicopters as “flying cranes" have been used by our building industry for over six decades. In the second half of the 1960s, the use of helicopters in the construction of ropeways was accentuated by Transporta Chrudim, a monopolistic domestic ropeway manufacturer. After gaining positive experiences, especially from the transportation by rope segment, helicopters began to be used by the then "conventional" building industry. Gradually, the benefits of execution of different types of construction work were confirmed, and in the following years the use of helicopters was incorporated in the main technological procedures. The construction of ropeways is an essential part of it until today.</p> Andrej Bisták Zdenka Hulínová Copyright (c) 2021 Andrej Bisták, Zdenka Hulínová https://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-31 2021-07-31 7 01 7 15 10.51704/cjce.2021.vol7.iss01.pp7-15 NON-GRAPHICAL DATA STRUCTURE FOR THE USE OF LCA IN BIM https://cjce.cz/journal/article/view/93 <p> </p> <p><span class="Apple-converted-space"> </span>The article deals with the data structure for the purpose of Life Cycle Assessment (LCA) of buildings using the Building Information Model (BIM). LCA is a method that can be used to demonstrate the suitability of proposed materials, structures, or buildings in terms of their whole life cycle and its environmental impact. For the LCA evaluation it is crucial to obtain life cycle inventory (LCI) input data. The aim of the article is to define a BIM data structure for LCI purposes. The new methodology is based on standardization of non-graphic information model data structure called SNIM. Advantages of the proposed methodology have been demonstrated on the case study. These results are useful for expanding the BIM model with new data necessary for further LCA calculations.<span class="Apple-converted-space"> </span></p> Michal Brandtner Copyright (c) 2021 Michal Brandtner https://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-31 2021-07-31 7 01 16 26 10.51704/cjce.2021.vol7.iss01.pp16-26 EVALUATION OF THE USAGE OF GEOTHERMAL ENERGY IN THE HOT WATER BOILER ROOM STRED I. https://cjce.cz/journal/article/view/89 <p>The dominant source of energy in the hot water boiler house Stred I. in Velky Meder is geothermal energy, which is drawn from the VM -1 well, which was drilled in its courtyard in 2015. Based on documents and personal inspections of this boiler room, I created a geothermal circuit scheme of this hot water boiler room, where the experimental measurements took place. Part of this paper is a diagram of the geothermal circuit, a comparison of measured values ​​within a selected characteristic day for summer and winter operation in 2020. Finally, the operation of the usage of geothermal energy in the hot water boiler room Stred I. is evaluated on all these indicators.</p> Soňa Gažíková Copyright (c) 2021 Soňa Gažíková https://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-31 2021-07-31 7 01 27 34 10.51704/cjce.2021.vol7.iss01.pp27-34 REFRACTORY PROPERTIES AND CORROSION RESISTANCE OF FORSTERITE-SPINEL CERAMICS WITH UTILIZATION OF FLY ASH https://cjce.cz/journal/article/view/90 <p>This article examines the process for the synthesis of forsterite–spinel refractory ceramics with utilization of fly ash and reactive alumina as sources of aluminium oxide. Raw materials were milled, mixed in different ratios and sintered at 1500 °C for 2 h. Sintered samples were characterized by XRD and SEM. Porosity, water absorption, bulk density, refractoriness, refractoriness under load, thermal shock resistance and corrosion resistance to the effects of molten iron were also investigated. The resulting properties were then compared depending on the source of aluminium oxide. Presence of spinel in fired samples led to improved microstructural and mechanical properties, thermal shock resistance and corrosion resistance. In particular, mixtures with 10–20 % of spinel had the most promising results.</p> Martin Nguyen Radomír Sokolář Copyright (c) 2021 Martin Nguyen, Radomír Sokolář https://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-31 2021-07-31 7 01 35 43 10.51704/cjce.2021.vol7.iss01.pp35-43 EDITORIAL Vol. 7, Issue 1 (2021) https://cjce.cz/journal/article/view/94 <p>Title page + Editorial Board + Scope &amp; Imprint + Contents</p> Václav Venkrbec Copyright (c) 2021 Václav Venkrbec https://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-31 2021-07-31 7 01 1 6 10.51704/cjce.2021.vol7.iss01.pp1-6