As of 1^st January 2021, an amendment to the Property Valuation Act and an amendment to the Valuation Decree also entered into force. With the amendment of these valuation regulations, there were fundamental changes in the valuation of easements. In this paper, we deal with the introduction of the new wording of these regulations concerning the valuation of easements and also the individual types of prices at which easements can be valued.

The paper briefly deals with building information modelling and creation of digital twins of buildings using modern techniques of spatial data collection (TLS). It describes an algorithm for automated verification of the building's structures. It presents algorithms for automated difference model creation between the BIM model and data obtained from TLS or photogrammetry. The results are used to verify the geometric parameters of structural elements (such as flatness of walls, straightness of pipes etc.), as well as to determine deviations in their location (position and orientation from the project itself). The information obtained is a basis for the qualification and quantification of deviations during construction management.

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.

A responsible approach to the environment is not only related to corporate ecology, but is also increasingly reflected in the design and construction of buildings, which is closely related to the concept of sustainable construction of buildings. With the development of sustainable construction, the need arose to evaluate buildings and their impact on the environment. For this reason, environmental certifications of buildings have been developed, which assess how a building affects its surroundings during its life cycle.
The aim of this article is to find out which environmental certifications exist in the world and which of them are most often used in the Czech Republic. Finally, the certifications are compared and their main differences are described.

Very quick process of digitalization in civil engineering is progressing also in the branch of geotechnical engineering. BIM is a part of this process. Mutual interconnection of the 3D model of ground with the 3D model of the geotechnical structure can help to give more clear view on the interaction of this structure with ground. However, at the same time it makes possible better control for all participants of the construction process, particularly if all conditions of this mutual interaction are fulfilled. Whether the main aim of the construction process – that the care devoted to the individual phases of the structure design and execution correspond to the risk with which this structure and ground are connected. Within this context a closer specification of the Eurocode 7 of the second generation will be specified, as it counts with different models.

The Helmholtz resonator is one of the most widely used low and medium frequency attenuation acoustic absorbers. While commercial products usually offer efficiency across almost the entire spectrum under consideration, in many cases only the specific natural resonance of the room needs to be suppressed. In such cases, it is necessary to proceed with your own design. This paper presents one of the possibilities of calculating a perforated resonator using the electro-acoustic analogy and the transfer matrix method. This method is not demanding on computing power, but nevertheless it is rarely used in current building-acoustic practice. This paper focuses on the comparison of the calculation of the sound absorption coefficient by this method with the data measured in the reverberation room.

The paper deals with the energy balance of windows for different combination of glazing parameters in connection with their orientation. Sum of solar gains through the transparent surfaces of a building envelope depends mainly on the size, their orientation and the g-value. Large glazed surfaces with correct orientation ensure large solar gains, but they are also the weakest part of the thermal isulating building envelope.
The influences of various U-value (U_g) and g-value of glazing on the energy performance of selected passive house were calculated by the use of computer simulation.

The benefits of BIM are discussed at almost all the conferences concerning the construction industry. Better quality project documentation is one of the most often referred assets of projects modelled in BIM. Unfortunately, it is not clear whether this benefit was realised in the projects or not. So, there raise following questions:

• How exactly was the declared better quality measured?
• What exactly is meant by the better quality documentation in practise?
• How can a contracting authority assess the quality of the project data processed by BIM models?

This article will try to answer all these questions and introduce the reader into the elementary principles of the quality measurability of the project information.

The article is intended for all clients (contracting authorities) who would like to choose a quality BIM contractor for their future project. It is based on the experience of implemented tenders (small-scale public contracts) and procurement procedures pursuant to Act No. 134/2016 Coll. on Public Procurement, as amended (“PP”). The article is an introduction to the system of qualitatively oriented selection of the BIM model contractor and related outputs – i.e. 2D drawing, quantity take-off, etc. This article applies to the Czech law.

The author points out the potential for savings in heating, etc. in public buildings and the potential dangers arising from inappropriately chosen scenarios. The risk factor is in particular the “lock-in effect”, which causes the failure to use all the possibilities to reduce the energy consumption that exists.

This is a case study of a multifamily residential building that has been environmentally assessed in terms of greenhouse gas (GHG) production using a simplified life cycle assessment (LCA) method. The results of total GHG emissions were compared to the emission limit value, which was set based on the climate objectives of the Paris Agreement and the scientific report The Emissions Gap Report. In response to the non-compliance with the emission limit, a number of emission-saving measures have been proposed and have been suitably designed into variants meeting the emission requirement.

This is a case study of a multifamily residential building that has been environmentally assessed in terms of greenhouse gas (GHG) production using a simplified life cycle assessment (LCA) method. The results of total GHG emissions were compared to the emission limit value, which was set based on the climate objectives of the Paris Agreement and the scientific report The Emissions Gap Report. In response to the non-compliance with the emission limit, a number of emission-saving measures have been proposed and have been suitably designed into variants meeting the emission requirement.

The risk assessment of water systems is implemented and carried out in more than ten European and a number of non-European countries. The main expected benefits of risk assessment are improving water quality, reducing the number and consequence of accidents, improving water resources protection, reducing acute diseases in the customer population, improving operational monitoring, better understanding of the entire supply system, reducing costs of remedies, operator and more. The disadvantage of carrying out a risk analysis for operators is, above all, a higher administrative burden and the costs of introducing a risk assessment.

Any roof likely to fall from a height shall be fitted with a handrail or restraint system as appropriate for the intended operation. Protection of persons against falls from a height must be addressed already during construction. Therefore, Act No. 309/2006 Coll. in its current wording, it specifies the work of the contractor and sets out its obligations. In addition to this Act updated in 2016, it is of course necessary to take into account other legislative requirements in the construction process. This implies many responsibilities of individual construction participants, which will be discussed in this paper.

In this article, we focus on fundamental element of primary protection – detection devices for registering the rise of hazardous concentrations of gases and vapors. We have chosen and described for each type of device and kind of detected gas basic tests that are necessary for ensuring their correct and reliable function.

The article briefly introduces basic technical terminology, errors and computational algorithms for estimating uncertainty of type A, type B, combined and extended uncertainty of test results and that the test management performs the tasks specified in the standard ČSN EN ISO / IEC 17025.