NFPA 780 避雷系统安装标准
日期:2012-02-09 10:28
ble for reducing hazards associated with lightning--from designers and to installers, to insurance professionals and AHJs.
Improve safety with vital updates, including
A new chapter on protection for wind turbines
A new chapter for lightning protection of structures housing ammunition and explosive materials
A new section on rooftop helipads
Clarified requirements for strike termination devices at the eaves for a pitched roof
Revised lightning risk assessment methodology (Annex L) now
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