Abstract

Background and purpose
Fire has long been an essential threat to urban safety, the physical environment, and the quality of urban life. One of the most important challenges threatening cities is the risk of creating and spreading fire in urban environments. Currently, Iran's metropolises are facing various problems, and one of the problems that the country's metropolises are dealing with is the fire crisis and, on the other hand, the weakness of their existing service infrastructures. The present study was conducted with the aim of statistical analysis of the fire crisis in the land-uses of Karaj metropolis the fourth largest city in Iran.
 
Materials and methods
The current research has a small nature, and using Merec and CODAS techniques, the statistical analysis of the fire crisis in urban uses in Karaj metropolis has been done. The scope of the research comprises 12 districts of Karaj metropolis, and 10 indicators related to the fire crisis in urban uses in 12 districts of Karaj metropolis have been investigated. The required data, taken from the statistics of Karaj in 2018, were weighted by the Merec technique and used in CODAS technique. The indicators studied in this quantitative research are the number of fires in residential use, the number of fires in educational use, the number of fires in healthcare use, the number of fires in service use, the number of fires in commercial use, The number of fires occurred in industrial use, the number of fires occurred in warehouse use, the number of fires occurred in the use of urban green spaces, the number of fires occurred in vehicles, and the number of fires occurred in the use of roads and crossings.
 
Findings and discussion
The research findings show that District 11 of Karaj metropolis has the highest score (3.859), and this District is green. The number of fires that occurred in the urban uses of this area was limited. In CODAS technique, Karaj District 6 with a score (-3.566), District 10 with a score (-2.605), District 2 with a score (-2.469), District 7 with a score (-0.488), and District 4 got the lowest points with a score of (-0.274). The most fire crisis in the urban uses of Karaj metropolis belongs to District 6. The number of fires that occurred in the urban uses of Districts 6, 10, 2, 7, and 4 has been high, and these areas are red. The average of the closest neighborhood of the fire crisis score in urban uses in the areas of Karaj metropolis was scattered.
 
Conclusion
Most fires related to residential and educational use occurred in District 6, most health and medical fires in District 4, and most service fires in District 5. City managers must pay special attention to these Districts. The most fires related to the commercial uses of Karaj city occurred in District 3, the most industrial fires in District 10, and the most urban green space use fires in District 2. The most fires on the roads and crossings in District 5, and it is necessary for city managers to pay special attention to these areas. Most fires occurred for residential use in Karaj, especially in the mentioned areas. Several factors play a role in this field. However, the main reason for this danger is due to the non-observance of construction principles and structure standards, which, if correctly observed, citizens will not fall into the trap of fire and subsequent accidents.