DOE Standard: Fire protection design criteria

1999 ◽  
Author(s):  
2016 ◽  
Vol 711 ◽  
pp. 767-774
Author(s):  
Christophe Lanos ◽  
Christophe Baux ◽  
Yannick Melinge

The efficiency of thin mineral passive fire protection layer applied on concrete is analyzed. The more suitable fireproofing material formulations are selected from results of laboratory scale fire test. Such tests consist in the direct exposure of protected concrete samples to the flame of a burner, at constant temperature (850°C). Various formulations of mineral fireproofing materials have been tested to identify the effects of binder type and the density. Formulation compromises are highlighted regarding requested fire performances. Selected formulations are used to protect real scale concrete slab exposed to standard fire (ISO 834). During the test, the concrete/fire protection layer interface temperature and the steel reinforcement temperature have been recorded. For small size slabs, fire proofing layer is completely efficient. The temperature increases are strongly delayed. For large size slabs, delamination of fire proofing layer appears, leading to rapid concrete degradation. To understand the mechanics of cracking and delamination of fire protection layer, laboratory scale tests are performed with two selected formulations varying the implementation methods (surface treatment of concrete, intervention on interface roughness, pre-cracking...). It appears that the occurrence of fire protection layer delamination can be avoided choosing the optimal implementation method without adjustment of the optimized formulations.


2020 ◽  
Vol 6 (3) ◽  
pp. 99
Author(s):  
Burak Kaan Cirpici

In order to design a fire-resistant steel structure, the change in the physical and mechanical properties of the steel at high temperatures must be known. As the temperature of steel structural elements increases during fire, their strength decreases considerably. After a certain temperature, these strength drops reach critical levels. Therefore, collapses and various deformations (buckling, arching, etc.) occur. To prevent these collapses during the fire, various fire protection materials must be applied to the structural members such as column and beam. Columns are the most critical structural elements in a steel bearing system. While the possible collapse of the columns may cause the collapse of the whole structure, the beams alone may not cause the collapse of the structure, and the column-beam junctions directly affect the spread of fire. Since there will be many openings and gaps in industrial buildings, the spread and growth of a possible fire becomes very serious. Special fire protection measures are therefore required. In this study, the behavior of a steel industrial structure designed and designed under the influence of Standard Fire (ISO 834) was investigated, the distribution of the temperatures in the structural elements was determined, the required fire protection material was selected, and both protected and unprotected steel temperatures were determined. This design against fire is designed to provide fire resistance for 1 hour (60 min) for this structure. During this period, the type and optimum thickness of the protection material to be applied before reaching the critical temperature values for which the strength of the steel material would lose and would be damaged and compared with the temperatures that would occur in the structural elements without applying fire protection. According to the findings of the study, it was concluded that 25 mm drywall box protection material should be applied on the inner columns and 20 mm on the edge columns and 15 mm on the corner columns. In addition to this, it was concluded that spray beams (intumescent coating) of different thicknesses between 15-20 mm were applied to the beams depending on the location and the load to be affected and the type of joint. After these applied passive fire protection materials, the temperatures obtained in the structural elements reached to 500-550 as a result of 1-hour fire design. These temperatures are acceptable temperature values given the strength drop in critical temperature ranges for steel under the 1-hour fire condition.


2003 ◽  
Vol 6 (2) ◽  
pp. 121-133 ◽  
Author(s):  
Lin-Hai Han ◽  
Lei Xu ◽  
Xiao-Ling Zhao

The temperature fields within twelve concrete filled steel tubular columns with or without fire protection when exposed to the ISO-834 standard fire curve (ISO-834, 1975) have been experimentally investigated and the results are presented in this paper. The main parameters varied in the tests are: (1)Sectional types, square and circular; (2) Sectional dimensions from 299mm to 800mm; (3) Thickness of fire protection coat from 14mm to 35mm. A derivation has been given for the surface temperature of concrete-filled tubular columns. Nonlinear finite element analysis has been carried out to calculate the temperature field for the members with and without fire protection. The theoretical predictions are in good agreement with the experimental data. It has been found that the increasing of tube dimensions results in a temperature reduction in the section. The effect of tube dimensions on temperature reduction is more significant for the core concrete than for the steel surface. Within a three-hour fire time, the reduction in temperature due to the increase in tube dimensions becomes less significant when the outer sectional dimension exceeds about 400 mm. The work in this paper provides a basis for further theoretical study on the fire resistance of concrete filled steel tubular columns.


2020 ◽  
Vol 1 (2) ◽  
pp. 41-49
Author(s):  
O Sizikov ◽  
V Nizhnyk ◽  
Y Ballo ◽  
S Golikova ◽  
O Savchenko

Results of researches are resulted as substantiation of the general provisions of the fire protection management system of the object of protection. For the first time, a series of terms and definitions have been developed to characterize and specify the individual elements of the facility's fire safety management system. Imperfection of existing approaches to existing organizational measures of fire safety at the object of protection is shown. Shown national and international experience in effective sales management influence management decisions using business management object protection that allows realizing on objects of different functions organizational requirements and technical requirements for fire prevention systems and complex fire protection. Studies of domestic and foreign studies have shown that effective management influence with the help of management decisions of the subjects of management allows to effectively implementing on the objects the technical requirements of the fire prevention system and fire protection system. The experience gained in the organization of the management system, the management decisions and the provisions for ensuring the fire safety of the object of protection should be systematized, and the algorithm for managing this process should be standardized. As a result of the conducted researches the organizational structure of the fire safety management system of the object was developed and requirements for its operation and control algorithm. The result of the work is the draft standard "Fire Safety Management System of the Object of Protection. General Provisions", which is to be approved by the order of the National standardization body of Ukraine and subsequently used by the central executive bodies, local self-government bodies, economic entities and bodies and units of the State Emergency Service of Ukraine


2020 ◽  
Vol 1 (2) ◽  
pp. 50-56
Author(s):  
V Kovalenko ◽  
A Borysova ◽  
V Kravchenko ◽  
R Likhnovskyi

Results of researches are resulted as substantiation of the general provisions of the fire protection management system of the object of protection. For the first time, a series of terms and definitions have been developed to characterize and specify the individual elements of the facility's fire safety management system. Imperfection of existing approaches to existing organizational measures of fire safety at the object of protection is shown. Shown national and international experience in effective sales management influence management decisions using business management object protection that allows realizing on objects of different functions organizational requirements and technical requirements for fire prevention systems and complex fire protection. Studies of domestic and foreign studies have shown that effective management influence with the help of management decisions of the subjects of management allows to effectively implementing on the objects the technical requirements of the fire prevention system and fire protection system. The experience gained in the organization of the management system, the management decisions and the provisions for ensuring the fire safety of the object of protection should be systematized, and the algorithm for managing this process should be standardized. As a result of the conducted researches the organizational structure of the fire safety management system of the object was developed and requirements for its operation and control algorithm. The result of the work is the draft standard "Fire Safety Management System of the Object of Protection. General Provisions", which is to be approved by the order of the National standardization body of Ukraine and subsequently used by the central executive bodies, local self-government bodies, economic entities and bodies and units of the State Emergency Service of Ukraine.


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