Experimental analysis of steel beams with fire resistant properties subjected to the ISO 834 Fire
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Abstract All buildings with human occupation need to be designed to withstand a certain standardized fire time related to the safety of their occupants. Within this context, the structure plays an extremely important role as passive fire protection element. As a result, the use of fire‐resistant steel has been produced and used to decrease the volume of passive protective material and sometimes eliminate it due to the presence of alloying elements such as niobium and molybdenum on its composition whose chemical synergy, coupled with carefully metallurgical processes, can maintain the material's mechanical properties above that those associated with the conventional steel. This paper is part of an extent research and aim to present initial experimental results of the behavior of no protected three side exposed beams under 60 minutes ISO 834 Fire curve with and without fire‐resistant properties. The tests were carried out into a horizontal furnace and the vertical deflection at the thirds of span was measured while the central was calculated based on these measurements. The experiment did not have the intention of investigate the connections, because of that, were stiffened for supporting the large plastic deformations of the specimenThe problems on performance-based fire protection design and evaluation of big commercial building were discussed with 3 examples of engineering case.The suggestions are: Setting sub-safety area to resolve this kind of problems.There should be atria at the entrance of sub-safety area from fire department.The fire compartmentation should be prescribed by code and the area of fire unit which is in the same fire compartment with sub-safety area should be controlled strictly.The refuge passageway as sub-safety area should be kept positive pressure during fire.It was also suggested to enhance the maneuverability of code by modification with the reference of reports of performance-based fire protection design on similar building in ten or more years.
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The definition of performance-based design about building fire protection and its current situation overseas is discussed.The performance-based code is compared with conventional code,and the problems existed in conducting performance-based fire safety design in the active code system of building fire protection are analyzed.
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Graduation thesis presents behavior of steel structures and structural elements under the influance of fire. The main focus in this work was to present all the methodes of fire protection for steel structures that are current in the market and to show all advantages and disadvantages for each fire protection system. In addition fire protection systems for plumbing penetrations are also presented, which have important role in providing sufficient fire resistance of the buildnigs. The thesis also present an example of designing fire protection for the steel column HEB 180 in accordance with European Standard Eurocod 3 – Part 1-2: General rules – Structural fire design [SIST EN 1993-1-2]. In the end of the thesis there is an overview of the standards for structural fire design.
Structural system
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One of the most significant problems encountered in steel structures is their insufficient fire resistance. This problem is eliminated by protecting structural steel elements through active and passive protection methods. Active methods are fire extinguishing systems implemented to make fire ineffective by controlling the fire as of its beginning. Passive methods are protective applications designed for steel structures by considering the emergence possibility of fire. In addition to such precautions, fire escape points should be identified during design stage of the building by taking emergence of fire into consideration. Regulations arrange rules regarding locations of fire-escape, their distance to the escape points, etc. In this study, fire protection methods of steel structures are evaluated in compliance with requirements of Fire codes.
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A Fire Safety Ranking System (EB-FSRS) is proposed for assessing the fire safety provisions in existing high-rise nonresidential buildings in Hong Kong. The objective is to investigate how far the fire safety provisions in those existing buildings deviate from the expectation of new codes. Suitable fire safety management can then be worked out in the transition period, based on the scores. Local fire codes were reviewed first to decide what should be the attributes and their weightings. From the reviewing results, three groups of attributes were proposed in the EB-FSRS. These are the passive building construction, active fire protection systems (fire services installation), and key risk parameters, all following the local fire safety requirements. The concept is similar to those equivalent concepts on fire safety parameters of the National Fire Protection Association–Fire Safety Evaluation System (NFPA-FSES). But the EB-FSRS is not a "trade-off" exercise. Thirty-seven old high-rise buildings were rated by studying their architectural features, interior details, and fire safety provisions. Scores under EB-FSES and NFPA-FSES are also compared.
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Abstract The present study provides an overview of the terminology and concepts of fire safety with particular emphasis on the workplace setting. Various issues, such as fire protection codes, standards, and regulations, fire safety fundamentals, features of building construction related to fire protection and employee response to emergencies have been examined.
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High-rise buildings, as significant symbols of urban development, demand critical attention to the electrical fire safety design of their fire protection systems. This paper aims to explore the electrical fire safety design in the fire protection systems of high-rise buildings to enhance fire safety. By comprehensively analyzing the principles and methods of electrical fire safety design, the feasibility and effectiveness of such systems in high-rise buildings are examined. This study also considers modern technologies and innovations to improve the performance of electrical fire safety systems. Finally, several recommendations are proposed to strengthen the practical application of electrical fire safety design in high-rise buildings.
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Abstract The present study provides an overview of the terminology and concepts of fire safety with emphasis on the workplace setting. Various issues, such as fire protection codes, standards, and regulations, fire safety fundamentals, features of building construction related to fire protection, and employee response to emergencies have been examined. The topic of fire safety concerns of lithium‐ion batteries is introduced.
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