Changing Views of Liability – If there is a liability question today, chances are it will grow in the future.Increasingly Vulnerable Contents – with electronic equipment susceptible to tiny blips of current, a lightning protection system provides low-resistance paths to minimize the effect of direct strikes to your building.Rising Costs – A proper system can protect your property for a lifetime.We recommend that whatever the risk value of your building that you also consider three outside factors that affect advisability of protecting your structure: As a result, we recommend, if based on the use of this guide, you specify lightning protection for a particular property and it is rejected, that you require that the rejection is put in writing for your files. Central High Rise offer a wide range of lightning protection products and services from the test and inspection of lightning protection systems to the design and installation of a full faraday cage system or the supply and installation of early streamer emission systems to new builds or retro fits. ![]() In most cases the costs of doing so are tiny in contrast to the value of the building, it’s contents and occupants. If there is any doubt opt to protect the structure. This reprint of the NFPS’s Risk Assessment Guide is in answer to several requests from architects, engineers and others for guidance. The Risk Index “R” is obtained by dividing the sum of the values given in Index A – E by the lightning frequency index value obtained from Index F. The map shows the incidence of thunderstorm days – days on which thunderstorms are observed – for the United States. ![]() Few areas in the United States are free from thunderstorms and their attendant hazards, but some areas have more storms than others.
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