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Archiv článků od 2.12.2013 do 10.2.2014

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10.2.2014
Ing. Jana Zuntychová, inženýrka zahradní a krajinné architektury, stážistka v Mecanoo, Delft, Holandsko

The thesis deals with urban sprawl and suburbanization as the effects of changes in society. It presents the basic historical overview and describes the situation in contemporary Europe. The thesis focuses on description of negative aspects, in connection with formed urban sprawl.
This work presents and describes the historical background of suburbanization in the Czech Republic. It reflects on the causes and presents the facts, leading to their understanding.
The practical part of the thesis is the application of acquired knowledge on the model, which is Brno-Útěchov. One of the peripheral parts of Brno that has grown significantly due to suburbanization in last few years.
Ideological study aims to show an alternative approach to this way of development. The main areas of interest are importance of public and private space, often neglected idea of neighborhood and the importance of privacy in terms of new houses in a face of village itself.

10.2.2014
Doc. Ing. Jaroslav Solař, Ph.D., Ing. Zdeněk Peřina, Ph.D., Ing. Filip Čmiel, Ing. Radek Fabian, Ph.D.

The reflected radiation significantly negatively influences the results of the quantitative infrared thermographic measurement in the exterior. The paper deals the metod of elimination of reflected radiation using appropriate equipment including examples of practical results of measurements.

3.2.2014
Ing. Roman Šubrt, Ing. Zdeněk Petrtyl

If you selected a high-quality windows and doors for your construction, the overall success depends only on the quality of installation. The most important is quality of the gap between the window frame and jamb. The basic three parts of this gap are inner and outer seal and thermal insulation.

3.2.2014
Petr Balvín, specialista na likvidaci azbestu

Asbestos is often mentioned in connection with the construction industry, especially with the school buildings. Wrong way of asbestos removal meant a multimillion cost of cleaning the property. Unfortunately, these cases do not cause a change in legislation that would regulate working with asbestos.

27.1.2014
Ing. Ondřej Anton, Ph.D., Ing. Petr Cikrle, Ph.D., Ing. Věra Heřmánková, Ph.D.

An integral part of a building survey is determining the location of steel reinforcements in building construction elements made of reinforced concrete. In the last decade, GPR came as one of the standard diagnostic methods. However, the equipment used until recently was characterized by its complexity and lengthy measurements, evaluation of which required a considerably professionally knowledgeable staff. The turning point was Hilti PS 1000, a GPR intended for use by common technicians during building surveys. This contribution evaluates the first experience with its use.

27.1.2014
Ing. Šárka Keprdová, doc. Ing. Jiří Bydžovský, Ph.D., Ing. Tomáš Melichar, Ph.D.

Cement-chip boards are construction elements which merge suitable wood and cement properties with the synergic effect designed for all-round use. The disadvantage of these boards remains the relatively high price. The price can be decreased by partially replacing initial raw materials. The paper addresses the option to modify the composition of cement-chip boards using alternative raw materials. Representatives of organic and inorganic materials were used (e.g., hemp, straw, waste products from production of mineral insulations and textile fibres). Alternative materials were used in the production of cement-chip boards under laboratory conditions in two various percentage ratios for the substitution of the wood component. In particular, 100 % and 50 % of wooden chips were replaced in the basic receipt of the boards. Testing bodies were produced using a mechanical press and basic properties were tested after 28 days of maturing. The results of individual board parameters – density, coefficient of elasticity and bending strength were compared with the normative requirements for cement-chip boards which are specified by standard EN 634-2.

montáž okna
20.1.2014
Ing. Roman Šubrt, Ing. Zdeněk Petrtyl

Only properly designed windows or doors with matching parameters and their proper building in the construction are a prerequisite for long-term trouble-free operation of them. Building-in of the windows is topic of the sixth part of the series about windows and doors.

20.1.2014
Ing. Jaroslav Kadlec, Ing. Miroslav Kratochvíl, prof. Ing. Ivailo Terzijski, CSc., Ing. Lukáš Zvolánek

The article handles about development of ultra-light concrete with mass density less than 1000 kg/m3. In the article there are described laboratory preparation of specimens and primary mechanical properties of the ULC.

13.1.2014
Ing. Jiří Nováček, Ph.D., Stavební fakulta, ČVUT v Praze

The comparison of different calculation methods for airborne and impact sound insulation between rooms is given in this paper. Theoretical influence of flanking transmission on total sound transmission between rooms is done, based on calculation results for reference set of residential buildings. New simplified methods are also introduced for estimation of corrections for flanking transmission in common cases.

13.1.2014
Ing. Robert Jára, doc. Ing. Dr. Jakub Dolejš

The article is focused on description of behaviour of the sandwich load-bearing panels with polystyrene core and OSB boards from the both faces. The interaction of the each component is provided by glued area connection. The panels are suitable for small and medium spans, walls and roofs. The benefits of the sandwich panels are high bending stiffness, good insulations properties and lightweight. The behaviour of the panel is mainly influenced by reinforcing, which is performed mostly by means of the I-beam ribs or rectangular profile ribs. The most important is the joint between sandwich panels and anchoring of the shear walls. The results of the racking shear wall experiments of the sandwich panels and capacity shear wall, which is significant for design of the timber structures, are presented in this article.

Betonová krychle
6.1.2014
Ing. Petr Cikrle, Ph.D., Ing. Dalibor Kocáb

The concrete built in the structure is difficult to determine the static modulus of elasticity. One possibility is to measure the dynamic modulus of elasticity and subsequent conversion to static modulus of elasticity. This paper deals with mutual relationships between static and dynamic modulus of elasticity including practical examples of the determination of reduction factor.

Plastová okna
6.1.2014
Ing. Roman Šubrt, Ing. Zdeněk Petrtyl

Only properly designed windows or doors with matching parameters and their proper building in the construction are a prerequisite for long-term trouble-free operation of them. Design of the windows and their parameters are topic of the fifth part of the series about windows and doors.

23.12.2013
Mgr. Ing. Anna Francová, Mgr. Dana Stejskalová, Advokátní kancelář Šikola a partneři, člen konsorcia Frank Bold

The article describes the characteristics of claims for defects from contract for work according to the new Civil Code. The new Civil Code unifies the provisions on contract for work currently contained in both Civil and Commercial Code. The article describes the defects founding the liability of a contractor, reporting the defects and warranty, the rights resulting from the defects and the specifics of claims for defects when the subject of a contract is a building.
It is important for the work to be clearly specified in the contract. Differences from the contract are considered defects. It is vital to inspect the work after the handover for any differences from the contract. The ordering party has to report the defects to the contractor without undue delay. The statute of limitations for claiming the rights from defects is 2 years. The rights resulting from sales contract defects apply analogously to the contract for work. In case of substantial breach of contract the ordering party can ask for the delivery of a new work, repairs or resolution of a contract. Unsubstantial breach of contract allows for repairs or discount.
The last part of the article concerns specifics of claims for defects when the subject of a contract is a building. The ordering party cannot refuse to accept the building for minor defects. The statute of limitations for reporting hidden defects is 5 years in case of a building. The responsibility for defects in shared between the contractor, the maker of the documentation and the construction supervisor.

23.12.2013
Doc. Ing. Jan Vodička, CSc., Ing. Václav Ráček, Ing. Josef Fládr

Steel fiber reinforced concrete (SFRC) with higher concentrations of fibers are still unattractive for investors. The paper presents the possibility of using metal waste to produce of wires, still suitable for the production of SFRC, but with a lower price than the known types of wires offered by current producers.

9.12.2013
Ing. Ondřej Anton, Ph.D., Ing. Věra Heřmánková, Ph.D.

Integral parts of present-day constructions are various types of wooden roof structures. This contribution documents a diagnostic survey, whose objective was to find the cause of significant acoustic phenomena in a recently completed wooden roof of a family house.

9.12.2013
Doc. Ing. Václav Kupilík, CSc., ČVUT Praha

Moisture in most of buildings can be limited by different methods. Problems are divided into two papers. The author analyses the conditions of moisture-spread in building in the first part of paper and he solves the selection of sanitation method with less frequent technology of realization. The specific cause with utilization of air insulation system is presented in this part.

Inspektor nemovitosti
9.12.2013
Ing. David Sýkora, Katedra městského inženýrství a stavitelství, Fakulta stavební, VŠB-Technická univerzita Ostrava

The article deals with a new product in the Czech market that is quickly getting to awareness of potential clients and gaining a significant place in the local real-estate market. Until recently, the inspection of immovable properties was an unknown concept. Nevertheless, in recent two years such assistance service is being more and more popular. Pertinent specialised inspection companies assist the real property buyer in eliminating potential risks that are related to selection and purchase of a given building. A competent certified inspector checks up to about 200 items of the building and compiles an expert report to help the client to correctly decide whether he should buy the given building or not. The inspector will acquaint the client with a real purchase price, precisely describe all the defects and how to correct them, and finally, he will hand over to the client a complete budget to cover the cost of necessary repairs.
In 2013 the inspection of real properties comes to one of the fastest growing segments of Czech economy. The people intending to buy any real property are more cautious and, now at the time of an economic uncertainty, they begin using the above relatively new assistance service in a large extent.

Sanace vlhkého zdiva
2.12.2013
Doc. Ing. Václav Kupilík, CSc., ČVUT v Praze, Fakulta stavební

Moisture in moist buildings can be limited by the most different methods. Problems are divided into two papers. The author of paper analyses the conditions of moisture-spread in building in the first part of paper and he solves the selection of sanitation method with less frequent technology of realization. The concrete cause with utilization of air – insulation system then will present in the second part.

2.12.2013
Ing. Roman Šubrt, Ing. Zdeněk Petrtyl

The fourth part of the series about windows and door is focused on Window hardware. Window hardware performs two functions: It allows opening of windows and doors and also, if closed, ensures meeting most of the required properties.


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