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
Modular Building | Feb 12, 2015
New shipping container complex begins construction in Albuquerque
The Green Jeans Farmery already has a hydroponic farm component courtesy of owner and entrepreneur Roy Solomon.
Transit Facilities | Feb 12, 2015
Gensler proposes network of cycle highways in London’s unused underground
Unused tube lines would host pedestrian paths, cycle routes, cultural spaces, and retail outlets.
Healthcare Facilities | Feb 11, 2015
Primer: Using 'parallel estimating' to pinpoint costs on healthcare construction projects
As pressure increases to understand capital cost prior to the first spade touching dirt, more healthcare owners are turning to advanced estimating processes, like parallel estimating, to improve understanding of exposure, writes CBRE Healthcare's Andrew Sumner.
Transportation & Parking Facilities | Feb 11, 2015
11 of the nation’s best ‘Complete Streets’ policies of 2014
Austin, Texas, and Troy, N.Y., are among the cities with the strongest safe streets policies, according to a new report.
Sponsored | Roofing | Feb 11, 2015
New school blends with local architecture using Petersen metal roof
Perkins Eastman in Stamford, Conn., designed the school to emphasize and integrate the International Baccalaureate curriculum throughout.
Mixed-Use | Feb 11, 2015
Developer plans to turn Eero Saarinen's Bell Labs HQ into New Urbanist town center
Designed by Eero Saarinen in the late 1950s, the two-million-sf, steel-and-glass building was one of the best-funded and successful corporate research laboratories in the world.
BIM and Information Technology | Feb 10, 2015
Google's 3D scanning camera leaves the lab
Google is said to be partnering with LG to create a version of the technology for public release sometime this year.
Steel Buildings | Feb 10, 2015
Korean researchers discover 'super steel'
The new alloy makes steel as strong as titanium.
Museums | Feb 9, 2015
Herzog & de Meuron's M+ museum begins construction in Hong Kong
When completed, M+ will be one of the first buildings in the Foster + Partners-planned West Kowloon Cultural District.
Multifamily Housing | Feb 9, 2015
GSEs and their lenders were active on the multifamily front in 2014
Fannie Mae and Freddie Mac securitized more than $57 billion for 850,000-plus units.