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Archiv článků od 2.2.2015 do 12.10.2015

Archiv recenzovaných článků

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12.10.2015
doc. Ing. Zdeněk Bažant, CSc., doc. Ing. Antonín Paseka, CSc., Mgr. František Hubatka

A former brickyard was filled up with diverse waste after extraction of soil. The resulting 20 m high slope was in the crown and in a toe build up without taking into account the possibility of its landsliding. The causes and consequences of the accident and remediation measures are described.

31.8.2015
Ing. Lucia Borisová

The recast of the Directive on Energy Performance of Buildings defined all new buildings will be nearly zero-energy buildings by the end of 2020. However, the transformation of the EU’s building stock will not be completed until well after 2020 and this target can only constitute an intermediate step. The renovation of existing buildings stock offers significant potential for both cost-effective CO2 emissions mitigation and substantial energy consumption reduction. Therefore energy efficiency can be seen as Europe’s biggest energy resource. The cost optimal methodology may be a useful tool able to identify the more appropriate retrofit measures in order to launch the renovation of the existing building stock on a large scale.

17.8.2015
Ing. Petr Červený, VOŠ a SPŠ Volyně

The paper deals with complex solution of heating and economy measures regarding ecology of heat sources and preservation of architectural values of the Volyně college-complex. This solution also includes padding warm and exchange of windows in all complexes. New technology in boiled room was installed with application of boiler for fytomass-burning, gas condensation boilers, thermal pump in system air/water and cogeneration unit for supply electric energy.

6.7.2015
doc. Ing. Václav Kupilík, CSc., ČVUT Praha

According to the statistics of the Fire Rescue Service of the Czech Republic, fires in apartment houses are among the most frequent tragedies. Therefore, it is necessary to pay them due attention. Their cause is often the incorrect execution of building construction disrespecting fire safety aspects.

22.6.2015
prof. Ing. Jan Tywoniak, CSc., Ing. Antonín Lupíšek, Ph.D., Ing. Julie Hodková, Ing. Michal Bureš, Ing. Martin Volf

This paper describes an own development of a curtain wall panel system. The leading idea of the project was to prepare an alternative solution for replacement of old metallic curtain walls during the refurbishment of nonresidential buildings from the 1960ies – 1970ies. Presented solution use wood and wood based materials (laminated veneer lumbers) for construction of panels, with clear preference to non-oil based materials for thermal insulation. System allows for different type of external cladding (cement based boards, wooden claddings, integrated PV, support for greenery). Integration of other technical components, like venetian blinds, decentralized ventilation units, is possible. Thermal performance, noise protection and fire safety of this new envelope together with environmental oriented assessments are discussed.

8.6.2015
Ing. František Stránský

In buildings registered in preservation zones the preservationists require keeping of the division and shaping of the opening pane girts and respecting of the original look of the facade. Keeping the girt profile, it is nowdays permitted to glaze the window wings using insulation glass. The manufacturers of windows still make many mistakes affecting not only physical characteristics of the opening panes but also their durability – life time.

1.6.2015
Ing. Roman Jirák, Ph.D., DECOEN znalecký ústav s.r.o.

The surface temperature as one of the most watched parametres of the opening panes and light enveopes not only in the Czech Republic is being assessed in a view of risk of water vapour condensation, or more precisely in a view of their health and a hygyenic flaws and ecologically sound environment where inbuilt. The mening is determination if the structure is suitable for the marginal conditions or whether is necessary to choose another structure.

18.5.2015
Ing. Pavel Rydlo, manažer technické podpory společnosti Saint-Gobain Construction Products CZ, divize Isover

Grey form of an expanded polystyrene (EPS) insulation have been used in the Czech Republic since 2005. It is necessary to respect application differences in between grey and white form of EPS. It´s not EPS such as EPS, in this case.

18.5.2015
Ing. Roman Jirák, Ph.D., DECOEN znalecký ústav s.r.o.

The surface temperature as one of the most watched parametres of the opening panes and light enveopes not only in the Czech Republic is being assessed in a view of risk of water vapour condensation, or more precisely in a view of their health and a hygyenic flaws and ecologically sound environment where inbuilt. The mening is determination if the structure is suitable for the marginal conditions or whether is necessary to choose another structure.

11.5.2015
Ing. Petr Pohl, projektant pozemních staveb a rozpočtář, jednatel stavební a obchodní firmy

In the article, I would like to draw attention to the issue with an outside window lintel on existing double glazed windows. The lintel is mounted below the other lintel and can therefore when replacing windows in modern window to form a problem. The article presents possible solutions window lintel. The most appropriate way is a solution that includes the total renovation of the building envelope with the replacement of windows.

4.5.2015
Ing. Pavel Šmíra, Ph.D., Ing. Andrea Nasswettrová, Ph.D., Ing. et Ing. Soňa Křivánková

The article presents a technological procedure and possibilities for surface treatment of different materials by using compact parts of CO2dry ice. A purifying medium is accelerated in the nozzle of the SDI Select 60 device by compressed air stream to a supersonic speed, and so it reaches high kinetic energy. The impact of CO2 at the temperature −78.8 °C rapidly cools down the surface; dirtiness becomes brittle and loses its base adhesion, causing temperature shock. Simultaneously with this temperature effect, dry ice intensively sublimates, increases its volume and removes, at high inner tension, the impaired surface of dirtiness without any formation of abrasion waste. The device is applicable to the removal of contamination from elements which cannot be saturated with water or when it is necessary to modify elements with no need to dismantle them. The report introduces the technology when removing contamination on the surface of wooden construction elements, artefacts and stone statues, as well as when forming a relief on the native wooden surface and at a surface treatment before the application of paint, or fungicidal and insecticidal agents.

27.4.2015
Ing. Jindřich Sobotka, prof. Ing. Miloslav Novotný, CSc., Ing. Karel Šuhajda, Ph.D., Mgr. Zdeněk Jiroušek

Drying masonry building structures using high-frequency electromagnetic (EMW) radiation, so-called. Microwave technology in construction practice becoming more exercise. It is an innovative method which can be used to remove excess moisture significantly speed. This article focuses on the description of physical phenomena that occur during drying and comparison standard, the most commonly used, processes for drying buildings.

16.3.2015
Ing. Jan Blažíček, redakce

The heat transfer between apartments operated on various internal temperatures objectively exists and under certain circumstances this may represent an important proportion of the total heat loss of the apartment. Is it possible to quantify the financial impact of the heat parasitism?

16.2.2015
Ing. Jan Blažíček, redakce

In the last article on the regeneration of residential buildings, I said that additional contributions will be more focused on topics that are crucial for the effective functioning of the heating system, or which are controversial perception among the general public. The first topic that fully meets the two criteria is the heat transfer between the different flats in apartment houses.

16.2.2015
Ing. Michal Čejka, Ing. Miroslav Šafařík, Ph.D.

The article deals with the issue of economic accessibility of energy-saving buildings; respecting the possibility of financial support from the National programme “Nová zelená úsporám” (New green savings programme, abbr. NZÚ). The purpose of the article is to disprove some of the incorrect interpretations and myths connected with this topic. It point out the good practice examples of a high-quality projects preparation, their successful submission into “New green savings programme” and following realization. Article aims either at lay or professional reader.

16.2.2015
Ing. Jaroslav Pánik

This paper deals with additional moisture protection of the building structures on the contact with the ground. The presented remedial work is based on the WTA guidelines, which recommend the optimal material and technology. Low and high pressure injections are mentioned, as well as additional horizontal waterproofing. It is underlined that important role plays the suitable materials and compliance with the prescribed technology. We cannot forget on effect of splash water and effect of condensing moisture. The success of remediation is conditioned on the highly professional realization of details. Specific solutions are illustrated in the appended figures.

14.2.2015
PhDr. Eduard Justa, člen Cechu obkladačů ČR, člen představenstva Silikátového svazu

Czech version of the renowned handbook TCNA contains guidelines for the design and execution of tiles made of ceramic, glass and stone. Contains a description of 155 standardized methods, guidelines for designing Movement Joint of Floors, Environmetal Classification. LEED and other information necessary for the proper design and execution of tiles. Guide creates a quality system. It was registered with the Chamber of Commerce as rules of practice. The manual is intended for designers, architects, craftsmen, construction management, investors, students, etc.

9.2.2015
doc. Ing. Martin Jiránek, CSc., ČVUT v Praze, Fakulta stavební

Basic principles of designing and realization of radon remedial measure in existing buildings are presented. Typical effectiveness of particular measures is summarized and schematic drawings of measures used most frequently are provided.

2.2.2015
Ing. Zuzana Mathauserová

If you ask hygienist, how to define the term " indoor environment quality", the aswer will be: A set of physical, chemical and biological environmental factors. All of these factors should have - if possible, and the current state of knowledge it allows - hygienic limits as insurmountable values, protecting human health.


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