Crowd Control - Answer -A public security practice where large crowds are managed to prevent the
outbreak of crown crush, affray, fights involving drunk and disorderly people or riots
Crowd Management - Answer -- The systematic planning for, and the supervision of the orderly
movement and assembly of people
- The assessment of the people handling capabilities of a space prior to its use
- Includes: occupancy, means of ingress/ egress, processing procedures, expected types of activities,
group behavior
Crowd Surges - Answer -- A "surge" is a sudden and powerful movement like one would witness with
waves of the ocean tide
- Unrelenting pressure from all side- a crushing "drowning" in a sea of people
- Occur in places where too many people are crowded in one place (entrance/exit, standing in a room)
2 Components - Answer -1. Dense Crowd- lots of people in one place; force magnifies at the epicenter or
on the edges
2. Catalyst- something that causes crowd to shift or move [sudden rain, more people, fights]
Most deaths caused by asphyxiations, not trampling (people squeezed so hard they can't breathe)
- Pushing from the back to front; from the front to back; & potentially from the top if one falls
, - Often caused by failure to create a safe environment (not always a stampede)
Crowd Stampede - Answer -- Occurs when a crowd of people move in the same direction at the same
time- some may collide or pile up against or on top of each other
- Impulsive, caused by catalysts
Crowd Density - Answer -Person per Sq Meter or 10 sq ft
2 - Safe Density at which we typically use when planning crowded spaces. The crowd has good free
following movement [GREEN]
3 - Movement starts being constricted [YELLOW]
4-5 - Critical density during which crowd surges are likely to occur [RED]
6-7 - Movement is very limited to a dangerous level [RED]
[10] 8+ - Movement is almost impossible due to pressure on each person [RED]
Event Phases - Answer -A- arrival
L- Last mile
I- Ingress
C- Circulation
E- Egress
D- Dispersal
Arrival - Answer -- Local Area
-Transportation hub
- Parking Facilities
Last Mile - Answer -- Between arrival and facility
- Line queuing close to venue
Ingress - Answer -- Entering the venue/ event
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