BayPointArchitect
Sawhorse
After studying Chapter 7 of the building code a few times, I have come to the general conclusion that the intent is to provide fire dampers within fire-rated barriers in such a way that air supply ducts are not circulating contaminated air between fire areas or segregated compartments. In other words, if tenant #1 has smoke and that smoke gets into the ductwork which serves no other tenant - then who really cares except for tenant #1?
Attached is a sketch that illustrates the quandary presented by my mechanical inspector and my building inspector.
A 26 guage duct connects the roof top unit without any openings into second floor. The supply and return air ducts serve a first floor tenant only.
Thank you for your insight.
ICC Certified Plan Reviewer
NFPA Certified Fire Plan Examiner
Attached is a sketch that illustrates the quandary presented by my mechanical inspector and my building inspector.
A 26 guage duct connects the roof top unit without any openings into second floor. The supply and return air ducts serve a first floor tenant only.
Thank you for your insight.
ICC Certified Plan Reviewer
NFPA Certified Fire Plan Examiner