Cladding and Wrapping Considerations
The added weight of the wrap systems must be included in static and seismic calculations. Fireproofing of the hanging system must also be considered. Regular maintenance must be considered, as cladding and wraps are not load-bearing and can be damaged during normal building or facility operations. Ampacity-derating may be mitigated by the use of purpose-designed intumescent or mechanically/electronically activated "windows" that permit heat venting. Like everything else in passive fire protection, all such methods are subject to stringent listing and approval use and compliance.
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