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MONITORING AND EXPERTISE IN SAFETY SYSTEM
Journals / MONITORING AND EXPERTISE IN SAFETY SYSTEM / Volume 2025 Issue 3 / FEATURES OF ASSESSING THE FIRE RESISTANCE LIMIT OF LOAD-BEARING STRUCTURES
UDC 614.841

FEATURES OF ASSESSING THE FIRE RESISTANCE LIMIT OF LOAD-BEARING STRUCTURES

Published in MONITORING AND EXPERTISE IN SAFETY SYSTEM · Volume 2025, Issue 3 · Pages 19–26 · Rubric: PROBLEMS AND PROSPECTS OF FIRE PREVENTION AND EXTINGUISHING
DOI: https://doi.org/10.61260/2304-0130-2025-3-19-26
Received: 15.09.2025 Accepted: 18.09.2025 Published: 21.11.2025
Authors
AL
Alexandra Guzhva
ORCID SPIN
EK
Ekaterina Sidorova
ABSTRACT
The theoretical and practical aspects of assessing the fire resistance limit of load-bearing building structures occupy a very important place in the system of building fire safety analysis. The fire resistance limit is a key parameter that determines the ability of structures to maintain strength and stability under high-temperature fire conditions. Modern approaches, including experimental and computational methods, as well as numerical modeling methods used in engineering practice, are considered. A comparative analysis of Russian and international regulatory documents regulating fire resistance assessment methods is presented. The factors influencing the accuracy and reliability of the assessment are considered: properties of materials, features of temperature exposure, geometric parameters of structures, types of loads. Special attention is paid to the use of software systems to simulate the thermal and mechanical behavior of structures in a fire. The necessity of an integrated approach to the assessment of fire resistance, combining computational and experimental methods, is substantiated. The findings can be used in the design of public buildings and the development of measures to ensure their fire safety.
KEYWORDS
fire resistance, supporting structures, fire, modeling, safety
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1. Technical regulations on fire safety requirements: Feder. Law No. 123-FZ of July 22, 2008. Access from the help.-legal system «ConsultantPlus».

2. GOST 30247.0–94 Construction structures. Fire resistance testing methods. General requirements. Access from inform.-the legal portal «Garant».

3. GOST 30247.1–94 Construction structures. Fire resistance testing methods. Load-bearing and enclosing structures. Access from inform.-the legal portal «Garant».

4. ISO 834-1:1999. Fire-resistance tests – Elements of building construction – Part 1: General requirements. URL: iso.org›standard/2576.html (date of reference: 07/08/2025).

5. SP 2.13130.2020. Fire protection systems. Ensuring the fire resistance of protection facilities. Access from the help.-legal system «ConsultantPlus».

6. GOST R 53295-2009. Fire protection products for building structures. General requirements. Methods for determining fire-retardant effectiveness. Access from the help.-the legal system «ConsultantPlus».

7. SP 468.1325800.2019. Concrete and reinforced concrete structures. Rules for ensuring fire resistance and fire safety. Access from the help.-the legal system «ConsultantPlus».

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9. EN 1991-1-2:2002. Eurocode 1: Actions on structures – Part 1-2: General actions – Actions on structures exposed to fire. URL: https://www.phd.eng.br/wp-content/uploads/2015/12/en.1991.1.2.2002.pdf (date of reference: 07/08/2025).

10. SP 52-101-2003. Concrete and reinforced concrete structures without prestressing the reinforcement. Access from the help.-the legal system «ConsultantPlus».

11. SP 63.13330.2018. Concrete and reinforced concrete structures. The main provisions. Access from the help.-the legal system «ConsultantPlus».

12. Kartashov A. A. Modeling of fire resistance of building structures // Building materials. 2021. No. 6. pp. 32–37.

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The contact persons
Secretary, editor of the editorial department of the editorial department of the Center for the organization of scientific research and editorial activities Saint-Petersburg university of State fire service of EMERCOM of Russia
Polina Bolotova
associate professor of the department of supervisory activities (responsible for the issue) Saint-Petersburg university of State fire service of EMERCOM of Russia
Tatiana Kuzmina
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