The paper is dedicated to present and compare two methods of controlling supplementary lighting system in office with limited glazing area. The lighting energy demand was evaluated taking into account positioning of light sensors and room occupancy. Comparison of daylight conditions in the rooms with different orientations was carried out. The results shows the effect of occupancy scenario on lighting control strategy.

The paper describes the problem of building envelope investigation with active thermography. Mainly emphasized is its application to detect different material of wall inclusions. Examples of active thermography application and description of experimental investigation has been shown on a model envelope, with inclusion of significantly different thermal conductivity and heat capacity materials; XPS polystyrene, steel and granite. Thermograms received for every kind of inclusion have been compared and analyzed. Finally, the summary and conclusion have been shown along with the prospects of development and practical application of this kind of investigation in construction.

When analyzing large panel buildings, it is very rare to take into consideration the requirements connected with the overheating effect. The paper presents the results of the annual computational simulations of thermal comfort conducted for one flat of W70 multi-family large panel building. Basing on the simulations the authors analyzed the influence of night cooling on thermal comfort inside the flat. Different simulation steps were taken into consideration: windows with and without shading systems, opened during entire night or just during given periods of time to keep specific thermal conditions.

The performance of hybrid power system used for supplying power to the autonomous road light system is analyzed in this paper. The calculations were based on data describing the typical climatic conditions in the selected location on Polish territory. The power flow simulation results were presented. The results show that the efficiency of micro-wind turbine is low. This leads to the conclusion that there is no economic justification to use it in such system

In this paper, the analysis of the influence of the changes in shaping steel hall pillars of its dynamic characteristics, in particular of the value of the natural frequency, has been subjected. The moment of inertia about the axis of the transverse profile of a typical arrangement of the pile and its mass influence on the dynamic characteristics of the steel pillars hall. These factors are different for different types of steel poles profile. The article presents the results of the analysis of the influence of the shape of the three selected types of profiles on the dynamic characteristics of the steel hall. Steel hall selected for the analysis is a workshop, a single nave hall with a frame structure covered with a gable roof. Profile sections of load bearing pillars used for the analysis are: IPE 450, 280 HEB, HEM 220. These profiles were selected due to similarities between stress levels. The evaluation shall assess the influence of such dimensional manipulation on change of the construction costs of the steel hall selected for analysis. Static design and modal analysis was made in Robot Structural Analysis which is FEM engineering program

For over a decade there has been a rapid development of technology in the construction of 3D scanners, resulting in increased precision, speed and reliability. The scope of their application has also been continuously extending. This paper describes possible applications for 3D scanners in construction measurement and evaluation. The uses described include measuring concrete surface roughness and surveying architectural details.

A dynamic response of structures determine its dynamic characteristics, i.e. the natural frequency, the corresponding figures of vibration and damping coefficient. Designing of a building in terms of dynamics lets us interfere in its stiffness and mass which allows the derivation of the structure of the resonance zone early in the design stage. It is known that the larger the value of the natural frequency the greater the stiffness of the whole structure. The article examined how the natural frequencies of the objectchange under the influence of adjustments in the development of the floor model. The main purpose of the analysis carried out in the article was to determine the relationship between stiffness and mass matrices and the results of the modal analysis of the chosen structure. The article hypothesized that the natural frequency is inversely proportional to the mass of the floor raised to a suitable exponent. A formula derived from this relationship has been verified on a number of variants of the building model made in the program for numerical calculation Dlubal.

The article presents the changes in designing rules of raft foundations according to Eurocodes in relation to structural stiffness of: superstructure–foundations–soil. The results from two numerical models (wall-type and slab-column superstructure) were analyzed. The subject of the analysis was to assess the influence of the raft foundation effective stiffness and Winkler’s spring constant on internal forces distribution in the foundation.

In this paper the experimental and numerical results of dynamic characteristics (i.e. natural frequencies and modes of vibrations) of the cable-stayed footbridge, located in Czestochowa, are presented. The numerical analysis was carried out with the ABAQUS package. The in situ tests methodology and the results are also presented on the basis of the spectral analysis of vibrations caused by a group people jumping. The theoretical and experimental results are in good agreement as far as both the natural frequencies and eigenmodes are concerned.

Basalt fiber-reinforced polymer (BFRP) bars are a new material used in reinforced concrete (RC) structures. They present such properties as high tensile strength, low modulus of elasticity and shear strength. Due to these mechanical properties, flexural behavior of BFRP RC elements is significantly different to that of traditional steel RC. This paper presents the results of an experimental and theoretical study of the short-term flexural behaviour of a series of simply supported BFRP RC beams. The beams were tested under four-point bending. The main objective of this paper was to investigate deflections of the beams depending on reinforcement ratio. The results of experiments were compared with code formulations and prediction models.

Basalt fiber-reinforced polymer (BFRP) bars can be a good alternative to traditional reinforcing steel. This type of reinforcement has low modulus of elasticity, hence deflections and cracking in BFRP RC flexural elements are larger than these found in typical RC members. As a result, the design of FRP RC beams is often governed by the serviceability limit states (SLS). This paper presents chosen results of a research programme in which 6 beams have been tested under four-point bending. The beams were varied in terms of the reinforcement ratio and diameter of rebars. The main goal of this paper was to investigate crack spacing and crack width of the beams. The results of experiments were compared with code formulations.

The article provides the empirical analysis of thermo-insulation layer thickness (expanded polystyrene – EPS70) of the typical wall detail and its investment payback period in the traditional new construction single-apartment residential and net-zero energy building. On the basis of the results a simple payback period was calculated. Geographic region of Lithuania and Poland was chosen as the research object. The research results are important for building investors, designers, also for the auditors and experts of buildings energy consumption.

The situation of cities, related to a rapid increase in the number of their inhabitants, stimulates the search for solutions counteracting the adverse consequences of this phenomenon. In order to improve the quality of life – both now and in the future – the idea of sustainable development was created, which is reflected in various visions of the twenty-first century cities. The concept of Smart City implemented in the revitalization project of Arabianranta district in Helsinki is a successful example of an action consistent with these concepts.

This paper points out recent tendencies in airport passenger terminal architecture. Taking sustainability of the building as a major concern, examples of the current architectural approaches are presented. Norman Foster’s Stansted Airport design is identified as a model solution and three cases of its implementation are pictured and analyzed. Moreover, the rising interest in multi-criteria certification in the aviation infrastructure is depicted on the example of LEED certification.

The article presents a passive building to be used for office purposes that is under construction in Podlaskie region. The building has been designed to meet the characteristics of a passive building – i.e. compact shape, mechanical ventilation with heat recovery, ground heat exchanger, tight external partitions with an indicator U < 0.15 W/(m2∙K), heat pump, solar collectors. Calculation indicator of useable energy demand for heating purposes is <15 kWh/m2∙a. In order to verify the achieved effects the building was subjected to tightness test and infrared camera tests are also planned. The building is constructed by the Podlaskie Passive Building Center as part of a project funded by the European Regional Development Fund.

The rising interest in the ecological and energy-saving constructions include the whole life cycle of building – starting from materials and ending with remains that a building leaves in the environment. The holistic view of the ecological construction leads to increase in the interest in constructions made from straw. This article focuses on the technology using straw bales in modern buildings. To a great extent the straw bale method fulfils modern, ecological trends because of low production costs, low energy use during production and biodegradation, among others. The article describes physical parameters specific for straw bale and gives examples of current projects of modern buildings made with this technology.

The article presents the problem of ichthyofauna protection in aquatic ecosystems. One of the possible solutions to protect the fish and fry in the water intakes is the use of properly designed water intake screens. The article presents the results of numerical calculations performed in Autodesk Simulation CFD software considering the performance of water intake screen under various conditions.

The article presents the results of research on autoclaved aerated concrete (AAC) produced according to the manufacturer recipe and modified AAC with the addition of waste from the semi-dry flue gas desulfurization installation. Produced cubes of concrete were analysed using thermogravimetry in a temperature regime of 0–1200°C in order to determine thermal stability. Samples were also tested using X-ray diffractometer to determine the differences in the content of tobermorite 1.1 nm, the compound which is responsible for the mechanical properties of tested concrete.

Cementation of iron water and sewage pipes is a standard procedure that is used to ensure internal protection against corrosion. In order to reduce leaching of chemical elements from coating to water, the neutral impact of cement coating on the water is of major importance. In the present study, the elemental composition of the cement mortar lining, taken from the new cast iron pipes with a diameter of 100 and 150 mm, has been investigated. A reference sample was made from Portland cement. Studies using scanning electron microscopy revealed an increased contents of titanium in the sewage pipes coating and also aluminum and alkali in water pipe coatings.

The laboratory studies of pesticides involves a number of ways and methods. It has become especially important nowadays when pesticides is common for people to use. The increasing risk of these chemicals has forced the Legislating Authorities in France to set up recommendations on the use of pesticides and established Ecophyto 2018 program. This paper and research are the part of an interdisciplinary project funded by CPER (Contract between the State and Region), FEDER and the Région Auvergne. The objective of this research is to characterize the fate of 3 herbicides (tembotrion, S-metolachlor, nicosulfuron) belonging to different chemical families on soil from Limagne region in France. The author have performed the experiments with the dry samples of soil which were polluted in the laboratory by spraying pesticide solutions. The work focused on one of the main processes governing the adsorption on surface of solid phase. The results of the research shown that the impact of pesticides is greatly dependent on their family origin as well as on the environmental conditions and the type of soil. Further studies have to be carried out to better understand actions and behaviour of the pesticides in the soil.

In the paper the results of experimental research on the deterioration of drinking water quality after cement mortar lining were presented. The experiments were conducted in the renovated water pipeline section in Cracow. Based on the results, the expected degree of leaching of the pollutants from cement mortar to drinking water for specified lengths and diameters of renovated pipes, as well as water velocities, was estimated.

The article presents the problem of planning works based on the BIM model of a building. The authors briefly discuss the possibility of using BIM as a tool for planning works, and then present the case study. In the case study method in a synthetic manner the planning process presents works based on a model residential building construction. The advantages and opportunities as well as the problems of using BIM as a basis for the planning process of construction works are discussed and commented in the conclusions.

This article presents an analysis of how the construction and insulation materials used for the walls of a sports hall built according to passive design affect the overall construction costs. The authors also attempt to answer whether the objective of achieving the lowest possible energy consumption in a building is actually economically sound. Cost analyses will be carried out to this end, the optimum insulation thickness will be determined, and the time necessary to balance the investment expenditure will be calculated for an energy-efficient construction project.

This paper presents selected variants of thermal insulation for external walls of single family homes. The main aim of this article is to analyze the technological and economical solutions based on the BIM model. The technical and economic analysis concerns the calculation and evaluation of both the costs of constructing the walls and the energy demand of the model building designed by the authors. The last part of the paper compares and prioritises proposed solutions in regard to the accepted assessment criteria using the AHP method, which allows for selecting the best solution.

The article presents a classification of sports floors based on the type of deformations to which they are subjected and gives several examples of possible methods of their manufacture and installation. Three variants of sports flooring have been suggested for a selected sports venue and, subsequently, a multi-criteria comparative analysis has been carried out for the variants taking into account the following criteria: cost, installation time, suitability for various sports disciplines and other extra-sport purposes as well as the floor thickness.