This reprint of the NFPA's Risk Assessment Guide is in answer to innumerable requests from architects, engineers and others for guidance in what up until now has been an area void of any real criteria. We at Thompson Lightning Protection could only urge, - "If there's any doubt, protect the structure; the costs of doing so are in most cases tiny in contrast to the value of the building alone, not to mention its contents, and particularly the safety of its occupants."

We feel that's sound advice. But we're glad that we can now furnish you with a guide prepared by a committee representing the divergent views of independent experts, lightning protection users, and the views of the industry of which we are part.

We recommend that if you specify lightning protection for a particular property based on this guide's use, and it is rejected, require that the rejection be put in writing for your files.

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