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
| May 27, 2014
Fire Rated Glass contributes to open lab environment at JSNN
Openness and transparency were high priorities in the design of the Joint School of Nanoscience & Nanoengineering within the Gateway University Research Park in Greensboro, N.C. Because the facility’s nanobioelectronics clean room houses potentially explosive materials, it needed to be able to contain flames, heat, and smoke in the event of a fire. SPONSORED CONTENT
| May 27, 2014
Contractors survey reveals improving construction market
The construction industry is on the road to recovery, according to a new survey by Metal Construction News. Most metrics improved from the previous year’s survey, including a 19.4% increase in the average annual gross contracting sales volume. SPONSORED CONTENT
| May 27, 2014
How to develop a dynamic referral system
Compelling your clients to provide you with quality referrals is one of the best ways to build a successful business. Here are ways to ‘train’ your clients to make quality referrals. SPONSORED CONTENT
Sponsored | | May 27, 2014
Grim Hall opens the door to fire safety with fire-rated ceramic glass
For the renovation of Lincoln University’s Grim Hall life sciences building into a state-of-the-art computer facility, Tevebaugh Associates worked to provide students and faculty with improved life safety protection. Updating the 1925-era facility's fire-rated doors was an important component of the project.
| May 26, 2014
New Jersey data centers will manage loads with pods
The two data center facilities totaling almost 430,000 sf for owner Digital Realty Trust will use the company's TK-Flex planning module, allowing for 24 pods.
| May 23, 2014
Top interior design trends: Gensler, HOK, FXFOWLE, Mancini Duffy weigh in
Tech-friendly furniture, “live walls,” sit-stand desks, and circadian lighting are among the emerging trends identified by leading interior designers.
| May 22, 2014
BIM-driven prototype turns data centers into a kit of parts
Data center design specialist SPARCH creates a modular scheme for solutions provider Digital Realty.
| May 22, 2014
Facebook, Telus push the limits of energy efficiency with new data centers
Building Teams are employing a range of creative solutions—from evaporative cooling to novel hot/cold-aisle configurations to heat recovery schemes—in an effort to slash energy and water demand.
| May 22, 2014
7 ways it pays to use BIM for data centers
Here’s where AEC firms and owners are getting the most bang for the buck when using BIM/VDC to coordinate data center projects.
| May 22, 2014
Big Data meets data centers – What the coming DCIM boom means to owners and Building Teams
The demand for sophisticated facility monitoring solutions has spurred a new market segment—data center infrastructure management (DCIM)—that is likely to impact the way data center projects are planned, designed, built, and operated.