Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 108 z 288

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g.2. Steel girders and supports can also found power stations. smoke extraction auto- matic extinguishing systems, can compensate for the bad properties the steel case fire limiting the critical temperatures. At first, fastening support systems steel girders seems barely possible. 500 °C, steel loses half its res- istance, that, there fire, the building struc- tures are exposed high risk. steel girders are used natural con- ductor, they are connected the earthing system, then construction clamps able carry light- ning current must used. Thus, unprotected steel does not possess fire resistance, meaning that special measures are necessary, such treatment with fire protection coatings lining with non-com- bustible plates. However, the supporting steel elements the building are unprotected, other technical equipment, e.2. Construction clamp, type 5010, able carry lightning current TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 108 Chapter The external lightning protection system . As steel girders may usually not drilled through, the only other option fastening with construction clamps. However, approx.7 Fastening steel structures In industrial construction, steel constructions are fre- quently used for the building structures