MACARTHUR
Petroleum
- Apr 20, 2009
- 6
thread184-179878
NFPA mentions that AST metallic roofs that have a minimum of 3/16" thickness are inherently safe. What about the aLuminum domes structures made of high and thick beams and which provide the main "Faraday' structural protection and covered by thin aluminum plates ? I believe that the structural beams web is a inherently safe system for lighhtning protection, since these beams and their hubs are protuding and more than likely to attract the lightning ... I consider though that aluminum being 4 x times more electricity conductive than Steel and 3 x times more heat dissipating than steet, ALuminum beams structures + thin plates have higher lightning protection than stell roofs.
Does any one has some actual cases with this? NFPA are not precise enough about aluminum domes for AST...
NFPA mentions that AST metallic roofs that have a minimum of 3/16" thickness are inherently safe. What about the aLuminum domes structures made of high and thick beams and which provide the main "Faraday' structural protection and covered by thin aluminum plates ? I believe that the structural beams web is a inherently safe system for lighhtning protection, since these beams and their hubs are protuding and more than likely to attract the lightning ... I consider though that aluminum being 4 x times more electricity conductive than Steel and 3 x times more heat dissipating than steet, ALuminum beams structures + thin plates have higher lightning protection than stell roofs.
Does any one has some actual cases with this? NFPA are not precise enough about aluminum domes for AST...
