Roman Trach

• PhD
• Warsaw University of Life Sciences

Crack segmentation in concrete bridge structures is a critical task for ensuring safety and durability. This study focuses on evaluating and improving the performance of various deep learning models for crack segmentation, including U-Net, SegNet, ENet, HRNet, FastFCN, and DeepLab V3+. A novel approach is proposed which integrates a probability map...

The main task of the operation of engineering structures is to ensure the stability of structures with aggressive external influences, which have a complex probabilistic nature. The reliable functioning of bridge structures requires the development and application of modern systems for inspection and assessment of the technical condition of the str...

Citation: Trach, Y.; Trach, R.; Kuznietsov, P.; Pryshchepa, A.; Biedunkova, O.; Kiersnowska, A.; Statnyk, I. Predicting the Influence of Ammonium Toxicity Levels in Water Using Fuzzy Logic and ANN Models. Sustainability 2024, 16, 5835. https:// Abstract: The study aimed to address the complex and critical issue of surface water quality monitoring b...

The expansion of impervious areas in the context of climate change leads to an increase in stormwater runoff. Runoff from roads, petrol stations, and service stations is the most common form of unintentional release of petroleum hydrocarbons (PHs). Rain gardens are an important practice for removing PHs from stormwater runoff, but little data exist...

Citation: Kravchenko, M.; Trach, Y.; Trach, R.; Tkachenko, T.; Mileikovskyi, V. Improving the Efficiency and Environmental Friendliness of Urban Stormwater Management by Enhancing the Water Filtration Model in Rain Gardens. Water 2024, 16, 1316. Abstract: Rain gardens are used to solve urban problems related to the negative impact of stormwater. (1...

This paper examines the effectiveness of sustainable warehouse design with regard to fire regulations and costs. When designing industrial facilities, the high risk of fire during their subsequent operation must be considered. Therefore, in this article, the variant analysis in terms of cost and technological, sustainable solutions for the investme...

Bridges are one of the key elements of the transportation infrastructure of each country, and the reliability of the entire transportation network depends on their functioning. Maintaining bridges in proper technical condition is the main task of bridge management, for which more and more countries use bridge management systems (BMS). This study is...

Modern construction projects are defined by complex multifunctional connections, which in turn leads to the need to process a significant amount of information. The main task of the innovative development of construction development is the creation of competitive advantages in a strategic perspective, which form a safe and comfortable environment f...

Almost every civil engineering project involves heavy construction equipment to create earthworks. This in turn is connected with carbon dioxide emissions, which are hazardous to the environment, especially in densely populated areas. Strict control and regulation of emissions from construction equipment has already been introduced in Hong Kong. Th...

Recently, the bridge infrastructure in Ukraine has faced the problem of having a significant number of damaged bridges. It is obvious that the repair and restoration of bridges should be preceded by a procedure consisting of visual inspection and evaluation of the technical condition. The problem of fast and high-quality collection, processing and...

The use of composite materials in additive manufacturing has significant potential and prospects for development. However, the 3D printing of composite materials also has some challenges, such as tool path planning and optimization, material distribution and planning, optimization of printing parameters, and others. Graph theory may be suitable for...

Natural limestone may be an option for removing sulphates from water. Such waters, which contain high concentrations of sulphate ions, are surface and mine waters. In this work, the removal of sulphate from model solutions (pH 6–8) by their sorption and chemical binding with calcium salts was studied. For experimental studies, natural limestone was...

Currently, in view of the previous theoretical and experimental researches, the regulatory documents for the calculation of reinforced concrete elements strengthened by composite materials and the calculation and design of fiber reinforced concrete structures are in force in Ukraine and in the world. Simultaneous strengthening of the compressed and...

The purpose of this research is to study the communication network among the participants in a construction project. The proposed approach contains the solving of the following tasks: identification of the key factors that affect the communication quality; calculation of the “communication quality” indicator between each pair of participants using...

Reinforced concrete (RC) structures are used in a wide range of applications, including high-rise buildings, nuclear power plants, oil and gas platforms, bridges, and other infrastructure. However, over time, RC structures can be subject to deterioration and damage, particularly from exposure to weather and environmental conditions, heavy traffic l...

Citation: Trach, Y.; Melnychuk, V.; Stadnyk, O.; Trach, R.; Bujakowski, F.; Kiersnowska, A.; Rutkowska, G.; Skakun, L.; Szer, J.; Koda, E. The Possibility of Implementation of West Ukrainian Paleogene Glauconite-Quartz Sands in the Building Industry: A Case Study. Sustainability 2023, 15, 1489. Abstract: The integrated use of minerals facilitates t...

Removal of cationic and anionic contaminants from surface waters with the same natural material is relevant both from environmental and economic points of view. Cationic contaminants can be removed by adsorption, while anionic ones-by the formation of insoluble calcium salts. In this study, nickel was taken as an example of a cationic pollutant and...

Bridges in Ukraine are one of the most important components of the infrastructure, requiring attention from government agencies and constant funding. The object of the study was the methodology for quantifying the condition of bridge components. The Artificial Neural Network-based (ANN) tool was developed to quantify the technical condition of brid...

Increased concentrations of chemicals in surface waters affect the development of fish and the state of water bodies in general. In turn, the human consumption of fish that have accumulated heavy metals can cause toxicological hazards and endanger health. The importance of this area and the lack of water quality assessment methods in Ukraine based...

Various human activities have been the main causes of surface water pollution. The uneven distribution of industrial enterprises in the territories of the main river basins of Ukraine do not always allow the real state of the water quality to be assessed. This article has three purposes: (1) the modification of the Ukrainian method for assessing th...

The article is devoted to the study of modern concepts that influence the cognitive mechanisms of project management in construction. The conducted analysis proved that obtaining a greater effect from the use of the knowledge of the participants in the implementation of the construction project is possible under the condition of the joint implement...

While designing water supply networks, an important task consists in establishing the place necessary for an installation of water supply wells along with water supply units located in them, in aim to determine the number of structural elements in the composition of individual pipelines of this water supply network. It has been proposed to apply a...

The article investigates the target principles of information modeling concepts in construction (BIM) as an innovative direction of updating the operating systems of construction companies in an unstable economic business environment. Based on the world experience, the preconditions and necessity of introduction of the concept of digital transforma...

1) The mineral deposits are the base resources of materials used in building and environmental engineering applications, especially available locally. Two wells of volcanic tuff deposits in the Khmelnytsky region of Ukraine were investigated in this regard. (2) Physical-mechanical, chemical, and mineralogical analyses of the core samples were carri...

Liming surface water is a fairly popular method of increasing the pH values and decreasing the concentration of phosphates and heavy metals. According to the Environmental Protection Agency (EPA) recommendations, the increase of water pH should not exceed 1.5. If surface water is the source of water supply, liming is a process that reduces water co...

Citation: Trach, Y.; Trach, R.; Kalenik, M.; Koda, E.; Podlasek, A. A Study of Dispersed, Thermally Activated Limestone from Ukraine for the Safe Liming of Water Using ANN Models.

Exceeding the approved budget is often an integral part of the implementation of construction projects, especially those where unforeseen threats may occur. Therefore, each construction investment should contain elements of risk forecasting, mainly in terms of the cost of its implementation. Only a small number of institutions apply effective cost...

The construction sector has a large impact on the environment and available resources. Natural resources and energy consumption occurs not only during the operation of the facility, but also during its construction. In addition, this situation often occurs when work already completed requires rework. In such cases, not only the reuse of resources a...

With the development of construction technologies, changing and modernizing customer requirements, projects become more time-consuming and, accordingly, all design documentation becomes more complicated, while its volume is steadily growing. Designers are forced to process more and more information that precedes and accompanies the process of worki...

The construction industry of Ukraine has a number of problems and barriers that hinder its development. The main problems affecting Ukraine are corruption, high level of opacity, inefficient use of resources and inefficient process management. Moreover, ineffective design and construction management reduce labor productivity and leads to reworks. U...

Recent research has shown that the increase in a number of participants of construction project elevated the cost and duration of construction. The use of integrated project delivery and the formation of a network organization structure can significantly reduce the costs, as the activities of the participants become more coherent and coordinated. T...

The purpose of the study is to use a social network analysis of a construction project’s participants to identify key participants using centrality measures and identify communities of participants in the network. This article analyses the communication network of a construction project that consists of 34 participants. Analysis of four centrality...

The construction industry is characterized by limited resources and a high level of competition. Limited resources and a competitive environment determine knowledge and information as a particularly important resource for the development of the construction industry. A communication network is one of the elements of a knowledge management system in...

Одним з найбільш затребуваних завдань аналізу мережі учасників проєкту, що представлені у формі графа, є кластеризація множини вузлів, тобто виокремлення таких підмножин, в кожній з яких вузли пов’язані між собою більшою мірою, ніж з вузлами поза цією підмножиною. Для оцінювання якості алгоритму кластеризації використовується функціонал модулярност...

Modern construction projects, especially large ones, require a wide range of participants. Taking this requirement into account it is of vital importance to optimize the cooperation between the participants. It made possible by modern Building Information Modeling (BIM) and Integrated Project Delivery (IPD) concepts. This study aims to analyze the...

The aim of the article is to develop an assessment model for the effect received from the integration of enterprises during the realization of investment projects in the construction. Having analysed the existing methods of the economic effect evaluation, we came to the conclusion that it is impossible to use them completely to assess the economic...

The collapse of the Soviet Union was the cause of a significant decline in many economies of the newly created countries. However, many of them, including the Ukrainian economy, are slowly recovering. One of the largest branches of the economy in this country is construction, which, despite political turmoil, is constantly growing, especially in th...

The article presents detailed analysis of the case of the renovation of one of historic tenement houses in Warsaw. Other, similar cases analyzed in less detail- were called verification cases. The aim of the article was, first of all, to present the scale of discrepancies between planned and performed amount of works and possibly precise indication...

The classic triad "owner-architect-general contractor" are the main participants of traditional projects. They make contracts that regulate the rights and obligations of the parties and establish procedures for solving the entire range of issues during the operation of contractual relations. However, modern projects, especially large ones, require...

The article presents a settlement analysis of introduced changes in the example infrastructure investment. The procedure of introduced the Change Command and the Engineer's Instruction on the Construction contract, as well as examples of the Change Commands given by the Engineer on the analyzed object were presented. The study covered the sett...

The process of integrated project delivery in construction shifts towards analyzing and controlling of communications. The transition to the modern construction management methods is closely connected with network organizational structure. The network structure is a new model for intellectual and productive resources exchange, which allows the ente...

Artykuł ma charakter badania teoretycznego i jest poświęcony analizie stanu aktualnego strategii zarządzania przedsiębiorstwem budowlanym. Przeanalizowano współczesny stan teorii zasobowej i etapów jej powstawania, perspektywiczne kierunki rozwoju oraz różnica w stosunku do innych koncepcji. Zaproponowano stosowanie współczesnych koncepcji modelowa...