Ensuring Rapid Evacuation is Important in the Event of an Emergency

JENSEN HUGHES develops solutions for optimizing occupant movement using a variety of analytical techniques, including egress modeling. Computer models can play an important role during this process by enabling the identification of factors that can create movement delays due to the creation of flow restrictions, converging occupant flows, and delays due inadequate signage and route identification. Our staff run simulations to evaluate building egress during fire events, people movement during large scale mass evacuation due to emergencies, optimization of flow through security checkpoints, and building egress using guided lighting systems. Field testing to measure occupant flows and people movement is often performed by JENSEN HUGHES to calibrate inputs to the computer models.

Building Egress / Evacuation

Picture_Section 1 - Services_Emergency Response_Egress&Crowd Movement ModelingOur engineers perform analyses having varying degrees of sophistication, from hand calculations to timed egress models, to evaluate a building’s emergency egress components.  These analyses can identify the impact of changing occupant loads, travel distances, and queuing times on the overall time it takes to exit a building. Non- compliant conditions can be evaluated to determine whether they have a substantial impact on occupant egress.

JENSEN HUGHES has developed criteria for dynamic guided lighting systems for facilitating occupant egress in emergency events. Dynamic lighting systems have the capability to provide event specific routing paths and in some cases are capable of re-routing occupants based on changes in condition, using directional arrows to indicate directions and a red “X” to indicate that an exit is blocked (below).

Crowd Movement

Picture_Section 2 - Services_Emergency Response_Egress&Crowd Movement ModelingWhen large number of people are involved in a special event or are present at facilities such as airports, malls, and stadiums, computer modeling can aid in the optimization of ingress/egress routing and the orientation and number of exits.  The results of the modeling can be used to inform decisions used in the development of fire safety plans and in the design of mass notification systems.  The modeling can also be used by emergency services and security personnel to guide operational decisions for large events. JENSEN HUGHES has evaluated crowd movement at large assembly spaces such as the Mall of America and at events as diverse as the Hajj at Mecca and the Pentagon Memorial Dedication.

Security Checkpoints and Entry Systems

Picture_Section 3 - Services_Emergency Response_Egress&Crowd Movement ModelingSecure building entry systems, security and border checkpoints create inherent delays in occupant flow.  New advances in security gates that incorporate biometric scanners can create additional delays that can create extensive wait times during normal use and under emergency conditions.  Our engineers perform modeling to optimize the configuration and location of security hardware, orientation and number of traffic lanes, and occupant throughput rates.

Full Scale Movement Studies

To validate egress & crowd movement models, JENSEN HUGHES can perform on-site testing to measure total occupant flows through building entrances/exits, flows through egress components (i.e., doors/exit stairs), and delay times at security checkpoints.  Full scale testing has the potential to identify occupant flow choke-points, areas that need additional signage to facilitate way finding, and measures to optimize flow through security checkpoints.

Contact Us Today:

Contact us today using our online form or by contacting one of our many regional branches.  For specific questions regarding JENSEN HUGHES’ egress and crowd movement modeling services, please contact:

Mike Ferreira
410-737-8677  x284