Axel Mossberg

Bengt Dahlgren Brand & Risk

This short communication presents the findings of the work conducted by the human behaviour in fire permanent working group of the International Association for Fire Safety Science. Its aim is to identify determinants of research gaps in the field of human behaviour in fire. Two workshops were conducted in 2023 in which research gaps were identifie...

Elevator evacuation is associated with several safety benefits and can be a cost-efficient evacuation strategy in many buildings or facilities. Despite the advantages, elevator evacuation is not yet a common strategy in the built environment. In this paper, a design strategy that allows the designer to consider information needs of evacuees when de...

As tall buildings and deep underground structures around the world increase in both numbers and complexity, the issues with evacuation of such structures, e.g., fatigue during evacuation or difficulties for people with functional limitations to evacuate, become more prominent. Elevator evacuation could be a possible solution to these matters but in...

Comparing results obtained in Virtual Reality to those obtained in physical experiments is key for validation of Virtual Reality as a research method in the field of Human Behavior in Fire. A series of experiments based on similar evacuation scenarios in a high-rise building with evacuation elevators was conducted. The experiments consisted of a ph...

Past studies suggest that people are often reluctant to use occupant evacuation elevators in case of fire. However, existing research is scarce and current knowledge is based on questionnaire studies and laboratory experiments. An unannounced evacuation experiment was therefore performed on the 16th floor of a 35-floor high-rise hotel building. Six...

The number of underground metro stations around the world is steadily increasing and deep stations are becoming more common. Evacuation elevators can be a way to mitigate many of the evacuation problems of deep stations, e.g., fatigue. However, the elevators need to be used by evacuees to be effective. In order to study the influence of evacuation...

This paper investigates evacuation from a specific floor plan to determine if elevators can replace one of the escape routes consisting of a staircase without lengthening the evacuation times. This study specifically studies evacuation from one single office floor with 360 and 540 occupants, designed as one fire compartment with an area of 2800 m2....

As in many countries, the Swedish building regulation is constantly updated. In most cases, these updates are small and do not affect the overall structure of the building code. However, from time to time, larger changes are made and the framework of how to use the code is changed. The latest of these major changes was made in 2011 and the code is...

In order to provide a reliable evacuation design assessment, data showing the variation in pre-movement time is of vital importance. The pre-movement time is in many cases regarded as the main time period during an evacuation assessment. Therefore, forty unannounced evacuation experiments for six different occupancies were analysed to quantify pre-...

The impact of different passive protective measures against external vertical fire spread was investigated using the numerical tool Fire Dynamics Simulator (FDS). The numerical study was divided into a validation study and a comparative analysis. The validation study was performed to evaluate FDS as a calculation tool for modelling external vertica...

Utrymningshissar har börjat bli ett vanligare inslag i byggnader runt om i världen. Anledningen till detta är att hissar löser ett antal problem, till exempel utrymning för personer med rörelsesvårigheter, samt att de visats effektivisera utrymningsförloppet i många fall. Föreliggande rapport ger en redogörelse för det aktuella kunskapsläget gälla...

Insats- och dödsbrandsstatistik är något som är intressant vid utformandet och utvecklingen av byggregler samt vid probabilistiska analyser. Denna rapport innehåller en sammanställning av Sveriges insats- och dödsbrandsstatistik uppdelat på de verksamhetsklasser som finns listade i Boverkets Byggregler. Denna statistik jämförs sedan med motsvarande...

Under hösten 2016 genomfördes en enkätundersökning om dagens och framtidens regelverk inom brandområdet av Brandskyddslaget AB. Resultaten presenterades delvis under konferensen Brandskydd 2016, där ett antal följdfrågor även ställdes till publiken som fick svara med mentormeterknappar under föreläsningen. Följdfrågorna, som besvarades av personer...

Gröna taktäckningsalternativ är något som ökat i popularitet inom byggbranschen under de senaste åren och efterfrågan på gröna tak är ständigt växande. De gröna taken innebär flera fördelar ur miljösynpunkt och ger därför höga poäng i de flesta miljöklassningssystem som många byggprojekt numera använder sig av. Ur brandskyddssynpunkt innebär därem...

In an MSc thesis conducted at Lund University, Sweden, a validation study of FDS version 6.2.0 on the area of external fire spread was conducted. The validation study was performed using experimental data from a large-scale fire test on a SP FIRE 105 test rig in Borås, Sweden. The SP FIRE 105 test rig is a test method for facade systems simulating...

This paper addresses the process of deriving design fires for Swedish railway tunnels. The paper describes a method for this process, developed by Brandskyddslaget and amended by the Swedish Transport Administration. The focus of the paper is on two subjects; the first is to describe the method and the second is to describe how present research...

http://www.sfpe.org/page/Issue4Feature3

External fire spread between fire compartments is a risk that has been observed in both experimental and numerical studies. A common way that different countries have dealt with this problem is by setting prescriptive spandrel (i.e. a vertical safety distance) and/or horizontal projection configurations in their respective building regulation. E.g....

The impact of horizontal projections on external fire spread was investigated using the numerical tool Fire Dynamics Simulator (FDS). The numerical study was divided into a validation study and a comparative analysis. The validation study was performed to evaluate FDS as a calculation tool for modelling external fire spread and was conducted using...

This report presents the proposed design solution to the SFPE Case Study 2016. One of the governing criteria was that the Case Study be treated as a project to be granted building consent as per the relevant Swedish legislation. Chapter 2 provides the reader with an introduction to the regulatory framework in Sweden, with respect to fire safety...

Idag blir så kallade dubbelglasfasader allt vanligare av både arkitektoniska såväl som energitekniska skäl. Den speciella fasadutformningen kan dock leda till att bränder i byggnaderna kan få en oväntad utveckling och risken för brandspridning mellan våningsplanen kan öka avsevärt. Själva lösningen blir dessutom svårtolkad enligt dagens gällande re...

As tall buildings are becoming more common there is a need to examine alternative evacuation strategies. In response to this many new high-rise buildings are equipped with evacuation elevators. Traditionally, elevators have not been used for evacuation and people have been instructed to avoid using them in fire emergencies. It might therefore be qu...

This report is a fire safety evaluation of Societetshuset on Marstrand. Its purpose is to focus on the human safety and evacuation possibilities. Societetshuset is mainly a restaurant, nightclub and a conference center, some nights there can be as much as 700 guests hosted in the building. Two scenarios have been analyzed through computer modeling...