Sökning: "egress times"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden egress times.

1. 1. Mescape - A probabilistic mesoscopic model for fire evacuation in large gatherings

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Lorenzo Contini; [2022]
   Nyckelord :Human behaviour; crowd evacuation; mesoscopic modelling; hydraulic model; large gatherings; fire safety; performance-based design; quantitative risk assessment; consequence analysis; uncertainty analysis; probabilistic modelling; Technology and Engineering;

   Sammanfattning : This study presents a mesoscopic model that predicts pedestrian evacuation in large gatherings with probabilistic methods. The model is based on a coarse network representation of buildings, where occupants are treated at a different scale according to their location. LÄS MER

3. 2. Visibility in Smoke With Different Extinction Coefficients

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Lea Elhokayem; [2022]
   Nyckelord :Visibility; smoke; exit sign; extinction coefficient; visibility constant; evacuation; Technology and Engineering;

   Sammanfattning : Visibility in smoke has since the 1970s gained some attention, mostly after Tadahisa Jin ran the experiments which helped him develop todays widely used visibility equation. By showing that visibility can be assumed to be inversely proportional to the extinction coefficient by a visibility constant (equal to 8 for light emitting sign and 3 for light reflecting), Jin opened up new doors for researchers who were testing out his theory by going around experimenting in different ways and also by showing that there is way for more research to be done. LÄS MER

4. 3. Förberedelsetidens variation vid utrymning

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Martin Forssberg; Jesper Kjellström; [2017]
   Nyckelord :egress; human behavior; performance-based design; pre-movement time; risk assessment; utrymning; mänskligt beteende; analytisk dimensionering; förberedelsetid; riskanalys; Technology and Engineering;

   Sammanfattning : The aim of this study is to investigate human behavior during the pre-movement phase of building evacuation and determine how pre-movement time varies between different building types and types of alarms. Unannounced videorecorded evacuation experiments from earlier studies were examined, which resulted in 2 486 individual pre-movement times divided amongst six different building types. LÄS MER

5. 4. WAY-FINDING AND CROWD MANAGEMENT IN SHOPPING MALL EVACUATION: A modelling case study of Emporia Mall in Malmö

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Ogun Ozalp; [2016]
   Nyckelord :Evacuation modelling; egress modelling; way-finding; crowd management.; Technology and Engineering;

   Sammanfattning : WAY-FINDING AND CROWD MANAGEMENT IN SHOPPING MALL EVACUATION-A modelling case study of Emporia Mall in Malmö Evacuation time can be reduced by successful crowd management techniques and efficient evacuation strategies. It is possible to use evacuation models for analysing egress strategies and evacuation procedures in shopping malls. LÄS MER

7. 5. Verification and Validation of Viswalk for Building Evacuation Modelling

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Johan Henningsson; Johan Blomstrand Martén; [2015]
   Nyckelord :Viswalk; evacuation model; egress model; verification; validation; Technology and Engineering;

   Sammanfattning : This thesis is evaluating the pedestrian modelling software Viswalk for the use as a building evacuation model, by verifying and validating the model. In the verification, a procedure from the National Institute of Standards and Technology (NIST) is used as a basis to assess Viswalk’s ability to represent pre-evacuation time, movement and navigation, exit usage, route availability and flow constraints. LÄS MER