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
University Buildings | May 10, 2024
UNC Chapel Hill’s new medical education building offers seminar rooms and midsize classrooms—and notably, no lecture halls
The University of North Carolina at Chapel Hill has unveiled a new medical education building, Roper Hall. Designed by The S/L/A/M Collaborative (SLAM) and Flad Architects, the UNC School of Medicine’s new building intends to train new generations of physicians through dynamic and active modes of learning.
MFPRO+ News | May 10, 2024
HUD strengthens flood protection rules for new and rebuilt residential buildings
The U.S. Department of Housing and Urban Development (HUD) issued more stringent flood protection requirements for new and rebuilt homes that are developed with, or financed with, federal funds. The rule strengthens standards by increasing elevations and flood-proofing requirements of new properties in areas at risk of flooding.
Government Buildings | May 10, 2024
New federal buildings must be all-electric by 2030
A new Biden Administration rule bans the use of fossil fuels in new federal buildings beginning in 2030. The announcement came despite longstanding opposition to the rule by the natural gas industry.
Mass Timber | May 8, 2024
Portland's Timberview VIII mass timber multifamily development will offer more than 100 affordable units
An eight-story, 72,000-sf mass timber apartment building in Portland, Ore., topped out this winter and will soon offer over 100 affordable units. The structure is the tallest affordable housing mass timber building and the first Type IV-C affordable housing building in the city.
K-12 Schools | May 7, 2024
World's first K-12 school to achieve both LEED for Schools Platinum and WELL Platinum
A new K-12 school in Washington, D.C., is the first school in the world to achieve both LEED for Schools Platinum and WELL Platinum, according to its architect, Perkins Eastman. The John Lewis Elementary School is also the first school in the District of Columbia designed to achieve net-zero energy (NZE).
Healthcare Facilities | May 6, 2024
Hospital construction costs for 2024
Data from Gordian breaks down the average cost per square foot for a three-story hospital across 10 U.S. cities.
MFPRO+ Special Reports | May 6, 2024
Top 10 trends in affordable housing
Among affordable housing developers today, there’s one commonality tying projects together: uncertainty. AEC firms share their latest insights and philosophies on the future of affordable housing in BD+C's 2023 Multifamily Annual Report.
Retail Centers | May 3, 2024
Outside Las Vegas, two unused office buildings will be turned into an open-air retail development
In Henderson, Nev., a city roughly 15 miles southeast of Las Vegas, 100,000 sf of unused office space will be turned into an open-air retail development called The Cliff. The $30 million adaptive reuse development will convert the site’s two office buildings into a destination for retail stores, chef-driven restaurants, and community entertainment.
Codes and Standards | May 3, 2024
New York City considering bill to prevent building collapses
The New York City Council is considering a proposed law with the goal of preventing building collapses. The Billingsley Structural Integrity Act is a response to the collapse of 1915 Billingsley Terrace in the Bronx last December.
K-12 Schools | Apr 30, 2024
Fully electric Oregon elementary school aims for resilience with microgrid design
The River Grove Elementary School in Oregon was designed for net-zero carbon and resiliency to seismic events, storms, and wildfire. The roughly 82,000-sf school in a Portland suburb will feature a microgrid—a small-scale power grid that operates independently from the area’s electric grid.