Nfpa-780 Standard 2011 Edition
NFPA 780: Standard for the Installation of Lightning Protection Systems, 2011 Edition. NFPA 780: Standard for the Installation of Lightning Protection Systems,.
- This edition of NFPA 780, Standard for the Installation of Lightning Protection. The 2000 edition of NFPA 780 was amended to provide requirements for open.
- NFPA 780-2011 NFPA 780: Standard for the Installation of Lightning Protection Systems, 2011 Edition. Major additions and technical revisions in this edition make it a 'must' for everyone responsible for reducing hazards associated with lightning - from designers and to installers, to insurance professionals and AHJs.
During a storm, witnesses glimpse upon falling rain, ice, or snow. However, their eyes don’t catch these same particles clashing within the storm clouds, increasing the imbalance between the clouds and the ground.
Objects on the ground become positively charged, allowing for current to pass between them and the negative storm clouds and sending negative charges plummeting to the surface of the earth. These phenomena our eyes do see— bolts can travel up to 200,000 mph, contain up to one billion volts of electricity, and are 5 times hotter than the surface of the sun.The are slim, but still about 27 people dieannually from being struck, while another 243 are injured.
Of course, duringthunderstorms, many people seek shelter. Unsurprisingly, buildings and otherstructures are more likely to be struck. To safeguard people and property from lightning-relatedhazards, standardizes the installation of lightning protection systems.And, these hazards are more likely than an individual beingstruck by lightning directly.
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In fact, according to the National FireProtection Association (NFPA), local fire departments responded to an estimatedaverage of 22,600 annually from 2007-2011.