Lightning Alley is not just a catchy name for a street or the local bowling lanes. It's the name dubbed to a notorious region in central Florida that is in the heart of the most lightning-prone area in the entire country. And that lightning strike may come at the most inopportune time.
Not only can this force of nature cause bodily injury and severe damage to property, it also has the power to disrupt or destroy a police department's 9-1-1 communications system, which is intended to assist residents during an emergency. That's exactly what happened in the middle of one Florida storm.
When a Walmart in the city of Bushnell was relocated, the facility was donated to the county for their use. The Sumter County Sheriff's Department decided to open its new offices in this building, including housing its emergency communications there.
One serious problem was that the electrical system was built for a 1970's vintage department store, not a critical communications and public safety facility. During one lightning storm in particular, the 9-1-1 system failed, leaving county residents without police, fire or ambulance response.
Inspection of the existing electrical system showed that it was badly flawed, mainly due to improper connectors and poor bonding and grounding. The communications tower, for example, had its own independent and inadequate grounding. The emergency generators and building structure were all independently grounded, each with its own ground rod, exposing its poor design. The main grounding electrode consisted of a single galvanized steel rod from the 1970s, with very high resistance to earth.
A new system was designed and installed for under $40,000, a minimal cost considering the value of the equipment protected, and improved public safety it brought to the residents of Sumter County.
"To be effective, the entire grounding system needs to be properly designed, using listed connectors and corrosion resistant materials," said Dave Brender, National Program Manager for the Copper Development Association, CDA. "Lightning protection systems in particular must be well-grounded to work properly, and could make matters worse if they are not. Copper and its alloys are the most common materials in use for this application because they provide superior corrosion resistance and avoid oxidation problems at connections.
Copper is also easy to install and durable," Brender added.
Central Florida is not the only region in the U.S. affected by severe weather. Similar 9-1-1 and broadcast facilities are employed in areas all over the country where communications is critical and the chances for lightning strikes are quite high. Having proper copper-based grounding and bonding should be a top priority where an entire system can get crippled by lightning.
Related Stories
| Dec 1, 2011
VLK Architects’ office receives LEED certification
The West 7th development, which houses the firm’s office, was designed to be LEED for Core & Shell, which gave VLK the head start on finishing out the area for LEED Silver Certification CI.
| Nov 29, 2011
First EPD awarded to exterior roof and wall products manufacturer
EPD is a standardized, internationally recognized tool for providing information on a product’s environmental impact.
| Nov 29, 2011
Suffolk Construction breaks ground on Boston residential tower
Millennium Place III is a $220 million, 256-unit development that will occupy a full city block in Boston’s Downtown Crossing.
| Nov 29, 2011
Report finds credit crunch accounts for 20% of nation’s stalled projects
Persistent financing crunch continues to plague design and construction sector.
| Nov 29, 2011
SB Architects completes Mission Hills Volcanic Mineral Springs and Spa in China
Mission Hills Volcanic Mineral Springs and Spa is home to the largest natural springs reserve in the region, and measures 950,000 sf.
| Nov 29, 2011
Turner Construction establishes partnership with Clark Builders
Partnership advances growth in the Canadian marketplace.
| Nov 29, 2011
AIA launches stalled projects database
To populate this database with both stalled projects and investors interested in financing them, the AIA in the last week initiated a communications campaign to solicit information about stalled projects around the country from its members and allied professionals.
| Nov 28, 2011
Leo A Daly and McCarthy Building complete Casino Del Sol expansion in Tucson, Ariz.
Firms partner with Pascua Yaqui Tribe to bring new $130 million Hotel, Spa & Convention Center to the Tucson, Ariz., community.
| Nov 28, 2011
Armstrong acquires Simplex Ceilings
Simplex will become part of the Armstrong Building Products division.
| Nov 28, 2011
Nauset Construction completes addition for Franciscan Hospital for Children
The $6.5 million fast-track, urban design-build projectwas completed in just over 16 months in a highly sensitive, occupied and operational medical environment.