17.06.14 ,
The article offers an algorithm for calculation of the reference wind pressure. However, different manufacturers give different information on stability of their masts towards the influence of wind (wind zone, wind speed...). The article points out the requirements of the Russian norms and standards in lightning protection, which can be divided in two groups:
1. Requirements of RD 34.21.122-87 Instructions on lightning protection of buildings and constructions and СО 153-34.21.122-2003 Instructions on lightning protection of buildings, constructions and industrial lines.
These documents mostly include requirements to the material and the cross sectional area of lightning protection devices intended to conduct the lightning current into the ground, such as lightning rods and down conductors.
2. Requirements of SP 20.13330.2011 Loads and impacts. Revised version of SNiP 2.01.07-85*
This document provides requirements to stability of different constructions to environmental influences, in particular to wind loads.
From this article you will know what wind load the installed air terminal mast will be subject to and how you should choose the external lightning protection system.
Related Articles:
