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
| Jul 31, 2013
15 innovations impacting higher education
Colleges must become more nimble, entrepreneurial, student-focused, and accountable for what students learn, according to Steven Mintz, Executive Director of the University of Texas system’s Institute for Transformational Learning. Mintz offers 15 innovations in higher education.
| Jul 31, 2013
Hotel, retail sectors bright spots of sluggish nonresidential construction market
A disappointing recovery of the U.S. economy is limiting need for new nonresidential building activity, said AIA Chief Economist, Kermit Baker in the AIA's semi-annual Consensus Construction Forecast, released today. As a result, AIA reduced its projections for 2013 spending to 2.3%.
| Jul 30, 2013
Better planning and delivery sought for VA healthcare facilities
Making Veterans Administration healthcare projects “better planned, better delivered” is the new goal of the VA’s Office of Construction and Facilities Management.
| Jul 30, 2013
Healthcare designers get an earful about controlling medical costs
At the current pace, in 2020 the U.S. will spend $4.2 trillion a year on healthcare; unchecked, waste would hit $1.2 trillion. Yet “waste” is keeping a lot of poorly performing hospitals in business, said healthcare facility experts at the recent American College of Healthcare Architects/AIA Academy of Architecture for Health Summer Leadership Summit in Chicago.
| Jul 30, 2013
Healthcare designers and builders, beware: the ‘Obamacare’ clock is ticking down to midnight [2013 Giants 300 Report]
Hard to believe, but we’re only six months away from when the Affordable Care Act will usher in a radical transformation of the American healthcare system. Healthcare operators are scrambling to decipher what the new law will mean to their bottom lines and capital facility budgets.
| Jul 29, 2013
University of Kentucky’s Rupp Arena, Lexington Center will be renovated
The University of Kentucky’s Rupp Arena and the nearby Lexington Center will undergo a major renovation beginning next year.
| Jul 29, 2013
2013 Giants 300 Report
The editors of Building Design+Construction magazine present the findings of the annual Giants 300 Report, which ranks the leading firms in the AEC industry.
| Jul 26, 2013
How biomimicry inspired the design of the San Francisco Museum at the Mint
When the city was founded in the 19th century, the San Francisco Bay’s edge and marshland area were just a few hundred feet from where the historic Old Mint building sits today. HOK's design team suggested a design idea that incorporates lessons from the local biome while creating new ways to collect and store water.
| Jul 25, 2013
3 office design strategies for creating happy, productive workers
Office spaces that promote focus, balance, and choice are the ones that will improve employee experience, enhance performance, and drive innovation, according to Gensler's 2013 U.S. Workplace Survey.
| Jul 25, 2013
How can I help you?: The evolution of call center design
Call centers typically bring to mind an image of crowded rows of stressed-out employees who are usually receiving calls from people with a problem or placing calls to people that aren’t thrilled to hear from them. But the nature of the business is changing; telemarketing isn’t what it used to be.
