A Review of Building Evacuation Models - NIST Virtual Library
A Review of Building Evacuation Models - NIST Virtual Library
A Review of Building Evacuation Models - NIST Virtual Library
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y the arc), which is calculated by using the distance <strong>of</strong> the arc and the speed <strong>of</strong> the occupants.<br />
The arc flow capacity is the upper limit on the number <strong>of</strong> people that can traverse the<br />
passageway per time period, which is calculated using the width <strong>of</strong> the arc and the flow<br />
(persons/foot-minute) <strong>of</strong> the occupants through that space. The data (speed and flow) is<br />
provided by the user, meaning that the source <strong>of</strong> the movement data is left up to the user to<br />
decide. And, once specified for the occupants <strong>of</strong> the simulation, the data (speed and flow)<br />
remain constant.<br />
Use <strong>of</strong> fire data: None.<br />
Output: The output is organized and explained in Table A.1.<br />
Parameter<br />
General overview<br />
Destination node distribution<br />
Total arc movement<br />
Identification <strong>of</strong> bottlenecks<br />
Floor clearing time<br />
Node clearing time<br />
Uncongested evacuation time<br />
by node<br />
<strong>Building</strong> evacuation pr<strong>of</strong>ile<br />
Destination evacuation pr<strong>of</strong>ile<br />
Node contents pr<strong>of</strong>ile<br />
Arc movement pr<strong>of</strong>ile<br />
Bottleneck information for a<br />
specific arc<br />
Node contents snapshot<br />
Non-evacuee allocation<br />
Table A.1: EVACNET4 Output<br />
Description<br />
Time to evacuate the building, time <strong>of</strong> uncongested<br />
evacuation, the congestion factor (building evacuation time<br />
divided by uncongested evacuation time), the average time for<br />
an evacuee to egress the building, the average number <strong>of</strong><br />
evacuees per specified time period, the number <strong>of</strong> successful<br />
evacuees<br />
Number <strong>of</strong> evacuees that passed through that exit to safety<br />
List <strong>of</strong> arcs and the number <strong>of</strong> people traveling through each<br />
one<br />
List <strong>of</strong> arcs that had bottlenecks (queues) and the<br />
corresponding time periods that the arc was a bottleneck<br />
Time period that the last evacuee left that floor<br />
Time period that the last evacuee left the node<br />
Number <strong>of</strong> time periods that the node was uncongested<br />
Number <strong>of</strong> evacuees per time period<br />
Number <strong>of</strong> evacuees per exit per time period<br />
Number <strong>of</strong> people waiting at the end <strong>of</strong> a time period for a<br />
specified node<br />
Number <strong>of</strong> people moving at the end <strong>of</strong> a time period for a<br />
specific arc, respectively<br />
Number <strong>of</strong> people waiting at a specific node<br />
Number <strong>of</strong> people at a specific node at a specified time period<br />
Number <strong>of</strong> people not evacuated by a particular time period<br />
Use <strong>of</strong> fire data: None.<br />
Import CAD drawings: No. The user enters capacity <strong>of</strong> the nodes and the initial contents.<br />
<strong>Building</strong> data is not necessarily supplied because the dynamic capacity (flow) and the traversal<br />
times specified in the input move people throughout the building as evacuation time progresses.<br />
Visualization capabilities: None.<br />
A-6