ANSI A300 Part 4 for Lightning Standard 2014 RevisionAmerican National Standard for Tree Care Operations – Tree, Shrub, and Other Woody Plant Management – Standard Practices (Lightning Protection Systems)The ANSI standards represent the industry criteria for performing tree care operations. The standards can be used for general familiarity with professional requirements, as well as for preparation of tree care contract specifications.(2014, softcover, 18 pp.)