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
| Mar 15, 2013
7 most endangered buildings in Chicago
The Chicago Preservation Society released its annual list of the buildings at high risk for demolition.
| Mar 14, 2013
25 cities with the most Energy Star certified buildings
Los Angeles, Washington, D.C., and Chicago top EPA's list of the U.S. cities with the greatest number of Energy Star certified buildings in 2012.
| Mar 14, 2013
How to win more work from community colleges
The nation’s thousand-plus community college districts can be a steady source of income for your Building Team—provided you appreciate the special needs of this important sector of the higher education market.
| Mar 13, 2013
Replacement escalators give Cobo Center a lift
New elevator technology enables Detroit’s Cobo Center to replace its escalators without disruption to its convention business.
| Mar 12, 2013
'World's greenest' office building seeks tenants in Seattle
Superefficient Seattle office building is designed to meet the ambitious goals of the Living Building Challenge.
| Mar 10, 2013
Walgreens to build first net-zero energy retail store
Walgreens announced plans last week to build one of the nation's first net-zero retail stores. The Evanston, Ill., location will utilize solar panels, wind turbines, geothermal technology, LED lighting and ultra-high-efficiency refrigeration to produce energy equal to or greater than the building consumes.
| Mar 7, 2013
Vegas rebound: Genting Group acquires assets of stalled Vegas casino-resort
International hospitality giant Genting Group has announced a deal with Boyd Gaming Corp. to purchase the land and assets, including partially built structures, of the stalled Echelon casino-resort in Las Vegas.
| Mar 6, 2013
Dual towers designed by SHoP create new affordable housing in NYC
With the construction of Hunters Point South, New York City will get its first large new housing development for middle-class families in more than 30 years. Related Companies is partnering with the nonprofit Phipps Houses in the project, designed by SHoP Architects with Ismael Leyva Architects.
| Mar 4, 2013
Korean Air, AC Martin collaborating on Western region's tallest tower
The 1,100-foot Wilshire Grand will combine retail and restaurant space, offices, and a luxury hotel in the sky.