We calculate insulation thickness in accordance with the criterion of maximum heat loss and monitor unwanted warming or cooling media and maintain the required temperature.

The article deals with Varnsdorf ice rink roof project and construction. The supporting structure made form wood and steel was quite complicated due to slanting swivel joint pillars in B and C axes. Three cranes, one lifting platform and one moving scaffold were needed for the construction.

In early September, the administration building Aviatica was inaugurated and officially unveiled, which is the flagship of a large development in the former factory Walter in Prague. Use of abandoned industrial sites, called Brownfields has been the great theme of Planning and Development during the last few years. Vast territories with dilapidated buildings have a negative impact on their environment, in terms of the degradation of the environment, environmental stress, negative social phenomena or reduction of the economic potential of the site. These lucrative localities are connected to existing technical and transport infrastructure. The transformation has a positive impact on the surrounding areas and instead of spatial expansion of cities into the countryside is one of the ways to exploit their intrinsic potential.

In October 2015, it was one year from when the new polyfunctional building Quadrio in the center of Prague above the metro station Národní třída was opened. It incorporates not only business and office space, but also residential building, a public passage and exit from the metro station. After almost thirty years a big scar of the historic city was healed. It was caused by the construction of the metro station Národní třída, which was accompanied by the demolition of the original buildings and the replacement with single-storey ground lobbies that suit rather to the suburb than the city center. At the same time a new public urban space was created, a stone plaza, which is in the case of similar projects rather rare exception than the rule.

Revision of ETAG 004 brought a change in the assessment of noise protection external thermal insulation composite systems (ETICS). Under this revision ETICS may have positive or negative influence on airborne sound insulation of wall on which was applied. The article deals with calculation method of airborne sound insulation, including concrete calculations, and measurements on ETICS with mineral wool.

The thermal performance of any building component is the result not only of its thermo-physical properties but also of a way of final installation and connections altogether of their all elements. In addition, thermal leakage and bridging in buildings can eventually contribute to a multitude of problems. The thermal bridge is the place in the building envelope through which heat transfer has a multi-dimensional nature. That is why in recent studies, the issue of heat transfer phenomena in the building components has been taken as a multi-dimensional into account more frequently. One of the specific details that create thermal leakage is located in balcony slabs. This paper is focused on advanced analysis of thermal performance of thermal break element applied in balcony slab with parametric correlation to the thermal properties of wall building envelope. Particular cases of commonly used balcony systems in buildings are observed related to multi-dimensional and parametric approach of modeling. Finally a finding of many aspects, such as building geometry, thermal properties variation and structural type importance are observed as certain influence to thermal bridges magnitude and final thermal performance of balcony slab detail.

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.

Stabilization of roof waterproofing coating, which uses the technology of mechanical fixing, are among the most commonly used technology not only in the Czech Republic. With an increasing number of roofs which are realized in practice still appear defects in these types of roofs, which are often caused by failure of the fasteners.
The aim of this paper is introduce the reader to the results of experimental measurements and make the statistical analysis of resistance of chosen fasteners supplied to the Czech market, find the possible cause of the failure of mechanically fastened roofs and evaluate the potential impacts on the design of mechanically fastened system.

The present study reveals the influence of typical wind permeability of connections at the eaves on thermal losses. Therefore, a laboratory test and a field test with different insulation materials and different typical geometries of the gap at the eaves were carried out. In order to show the influence on the heat flow rate dependent on insulation material characteristics, three insulations with different densities and air flow resistances were chosen. Furthermore, in the laboratory test the roof inclination, the insulation thickness and the fixation of the roofing underlayment were varied.for the laboratory test, a part of a roof was constructed in the climate chamber. Hence, an influence on the heat flow rate depending on the insulation material has been detected. Where as cellulose insulation and the heavy mineral wool show no significant reaction of the heat flow under different wind velocities and different gap sizes, the investigated lightweight mineral wool insulation shows an important variation of the Uvalue. For the field test, a typically pitched roof was constructed, the eaves placed in the main direction of the wind. It was shown, that the influence of wind on the heat flow rate is negligible if the gaps at the eaves are masked by a projecting roof. The outcome of the research project will lead to a modification of a national construction standard.

The increased moisture of the building materials causes the change of its mechanical and physical characteristic. In particular the high amount of loose water in construction is harmful to human beings, increase the economic expenses of usage of the building and shorten the lifetime of the building. One of the direct techniques to restore damp proofing and to increase the utility value of the building that have undergone rapid progress in last few years is the injection procedure.With use of experimental methods in my work I deal with evaluation of two injection compounds used in Czech Republic and with its impact on the mechanical characteristics of the mortar.

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.

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.

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.

The paper presents the design and construction of the wooden roof structure covering the Penny market building, which is located in the Czech Republic and was built in the summer of 2013. The building of the roof structure was based on the 26 m long elements consisting of 2 or 3 trusses assembled with punched metal plate fasteners and bracing members. The design philosophy, details and descriptions of choosen methods used in the roof design are part of the paper.

This article is focused on design optimization in naturally ventilated facades. Ventilated facade constructions are designed according to ETAG 034. Thickness of the cavity is defined at least 20 mm. This distance can be reduced locally to 5 mm to 10 mm. In this case, it has to be verified that it does not affect the ventilated function. The minimum cross-sections of ventilation openings at the inlet and at the outlet are also determined at least 50 cm² per linear meter. The influences of local reductions at inlet and outlet openings are analyzed. Air temperatures and velocities are monitored in the cavity with thickness 20, 40 and 60 mm. Results show that the influence of local reduction increases with increasing cavity thickness.

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.

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.

The exact determination of emissivity and the following determination of surface temperature of glossy materials can be carried out e. g. after applying a material with a known value of emissivity on the surface (e. g. self-adhesive foil or spray tint). The contribution deals with other possibility of determination of surface temperature and the influence of emissivity of glossy materials using a metal shield that reduces the negative influence of the reflected radiation during the termographical measurement.

The article deals with the determination of thermal conductivity mineral insulation. Mineral Insulation Manufacturers Association conducted a survey on this topic between building designers and describes the various possibilities of calculation and determination of these values and the differences between them.