Sports, entertainment venues: Fire and life safety
Participants (left to right):
Keith Cooper, PE, President, McClure Engineering, St. Louis
Douglas H. Evans, PE, FSFPE, Fire Protection Engineer, Clark County, Nevada
Bill Larwood, PE, LEED AP, Senior Vice President/Project Principal, Syska Hennessey Group, Los Angeles
Kevin Lewis, PE, LEED AP BD+C, Vice President, Henderson Engineers, Lenexa, Kansas
Bruce McKinlay, Principal, Arup, Los Angeles
CSE: What unique fire suppression systems have you specified or designed in sports and entertainment venues?
Larwood: A few unique fire suppression systems we’ve collaborated on include a water cannon for an outdoor exhibit space and a deluge system to protect structural steel, which eliminated the need for fire-proofing.
McKinlay: Smoke management and containment, smoke venting on stadium/arena with closed roofs, ability to open roofs, and backup/emergency power.
Evans: When the ceiling height becomes excessive, automatic sprinkler protection is less apt to provide the protection intended. Although the actual height where this becomes an issue is not well established, a reasonable value is around 50 ft. The actual height will depend on fire size, air movement, and effectiveness of the sprinkler droplets to penetrate the plume and provide the necessary cooling. Eighteen-wheeled semis are allowed to drive inside some of the multi-use facilities on the Las Vegas Strip to load and unload. Multi-story trade show booths, boat and RV shows, as well as some concert venues can create a fire exceeding 18 MW. As the ceiling height continues to increase (upwards of 75 ft), there is little to no assurance sprinklers will perform as intended, and deluge-type suppression systems have been incorporated into some of the Strip venues. Manually operated water cannons have also been used. These types of suppression systems place more burden on the designers and owners and must only be incorporated with extreme caution.
CSE: With regard to mass notification and emergency communication systems, what code changes do you anticipate in the near future?
Cooper: Intelligibility of voice communications will likely be better addressed, and better guidelines for enforcement and verification of intelligibility will be provided to the local inspector.
Evans: With increased occupant loads and reduced egress widths, it becomes more prudent to use mass notification and emergency communication systems. Coordination by facility management becomes an absolute necessity. Among other aspects, this will include CCTV and trained staff.
McKinlay: All stadiums should have voice activated and managed evacuation. High-quality acoustic systems for both emergency and general information are also important.