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
Building Owners | Dec 16, 2020
What developers and property owners really want from AEC firms
Calling all real estate developers, building owners, and facilities directors, BD+C editors would like your expertise and input for our "What Owners Want" editorial research project.
Healthcare Facilities | Dec 10, 2020
The Weekly show: The future of medical office buildings, and virtual internship programs
This week on The Weekly show, BD+C editors spoke with leaders from SMRT Architects and Engineers and Stantec about the future of medical office buildings, and virtual internship programs
Multifamily Housing | Dec 4, 2020
The Weekly show: Designing multifamily housing for COVID-19, and trends in historic preservation and adaptive reuse
This week on The Weekly show, BD+C editors spoke with leaders from Page & Turnbull and Grimm + Parker Architects about designing multifamily housing for COVID-19, and trends in historic preservation and adaptive reuse
Giants 400 | Dec 3, 2020
2020 Science & Technology Facilities Giants: Top architecture, engineering, and construction firms in the S+T sector
HDR, Jacobs, and Turner head BD+C's rankings of the nation's largest science and technology (S+T) facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Laboratory Facilities Sector Giants: Top architecture, engineering, and construction firms in the U.S. laboratory facilities sector
Affiliated Engineers, HDR, and Skanska top BD+C's rankings of the nation's largest laboratory facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Industrial Sector Giants: Top architecture, engineering, and construction firms in the U.S. industrial buildings sector
Clayco, Jacobs, and Ware Malcomb top BD+C's rankings of the nation's largest industrial buildings sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Convention Center Sector Giants: Top architecture, engineering, and construction firms in the U.S. convention center sector
AECOM, Gensler, and Jacobs head BD+C's rankings of the nation's largest convention center sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Reconstruction Sector Giants: Top architecture, engineering, and construction firms in the U.S. building reconstruction and renovation sector
Gensler, Jacobs, and STO Building Group head BD+C's rankings of the nation's largest reconstruction sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 K-12 School Sector Giants: Top architecture, engineering, and construction firms in the U.S. K-12 school facilities sector
AECOM, Gilbane, and PBK head BD+C's rankings of the nation's largest K-12 school facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Sports Facilities Sector Giants: Top architecture, engineering, and construction firms in the U.S. sports facilities sector
Kimley-Horn, Mortenson, and Populous top BD+C's rankings of the nation's largest sports facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.