Calculation of lightning protection zones

Set the length, width and height of the building or structure you intend to protect

Click on the last text field (yellow) and select n - the average annual number of lightning strikes in 1 sq. Km of the earth's surface at the location of the building (construction) by clicking on the corresponding figures at the bottom of the map.

Choose the category of the protected building / structure

Choose a protection zone: A or B according to N (expected number of lightning injuries)

Choose from 5 schemes corresponding to you and click.

Set the values ​​in the left text boxes and click the "Calculation"
Each of the five schemes has its own note (the "Note" button). There are also formulas for calculating each protection scheme.
Download Lightning protection
Win98 requires the VB msvbvm60.dll library