Â
Â
Â
Â
Â
Â
Â
Â
Â
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. Â "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. Â 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
| Aug 13, 2013
DPR's Phoenix office, designed by SmithGroupJJR, affirmed as world's largest ILFI-certified net-zero facility
The new Phoenix Regional Office of DPR Construction, designed by SmithGroupJJR, has been officially certified as a Net Zero Energy Building by the International Living Future Institute (ILFI). It’s the largest building in the world to achieve Net Zero Energy Building Certification through the Institute to date.
| Aug 13, 2013
USGBC joins forces with Green Sports Alliance to promote sustainable venues
The U.S. Green Building Council (USGBC) has announced a collaboration with the Green Sports Alliance, a prominent nonprofit organization supporting the development and promotion of green building initiatives in professional and collegiate sports.
| Aug 12, 2013
Decade-long renovation of Kansas Capitol Building expected to be complete by year end
A $300 million-plus, decade-long renovation of the Kansas Capitol Building in Topeka is expected to be complete by the end of the year. The exterior refurbishing of copper over the four imposing wings and around the dome should be complete by late November.
| Aug 12, 2013
New York’s first net-zero school will be a sustainability lab for city school system
An elementary school on Staten Island will be the first net-zero energy school in New York City and the Northeast. The school is designed to use half the energy of a typical New York public school. Construction will be completed in 2015.
| Aug 8, 2013
Energy research animates science sector [2013 Giants 300 Report]
After an era of biology-oriented spending—largely driven by Big Pharma and government concerns about bioterrorism—climate change is reshaping priorities in science and technology construction.
| Aug 8, 2013
Top Science and Technology Sector Engineering Firms [2013 Giants 300 Report]
Affiliated Engineers, Middough, URS top Building Design+Construction's 2013 ranking of the largest science and technology sector engineering and engineering/architecture firms in the U.S.
| Aug 8, 2013
Top Science and Technology Sector Architecture Firms [2013 Giants 300 Report]
HDR, Perkins+Will, HOK top Building Design+Construction's 2013 ranking of the largest science and technology sector architecture and architecture/engineering firms in the U.S.
| Aug 8, 2013
Top Science and Technology Sector Construction Firms [2013 Giants 300 Report]
Skanska, DPR, Suffolk top Building Design+Construction's 2013 ranking of the largest science and technology sector contractors and construction management firms in the U.S.
| Aug 8, 2013
Level of Development: Will a new standard bring clarity to BIM model detail?
The newly released LOD Specification document allows Building Teams to understand exactly what’s in the BIM model they’re being handed.
| Aug 8, 2013
Blueprint for a boom town: Potential pitfalls for booming development
Accolades for Nashville, Tenn., my hometown and GS&P’s flagship location, just keep piling up. In 2011, Forbes named Nashville No. 3 on their list of “The Next Big Boom Towns in the U.S." All of these accolades are wonderful, but Nashville now must work hard to prove their longevity—to grow and build intelligently.