Requirements
Maintain at least 55%, 75, 95 (based on surface area) of existing building structure (including structural floor and roof decking) and envelope (exterior skin an framing, excluding window assemblies and non-structural roofing material).
Maintain at least 55%, 75, 95 (based on surface area) of existing building structure (including structural floor and roof decking) and envelope (exterior skin an framing, excluding window assemblies and non-structural roofing material).