Project Info: V-B; Full NFPA 13, 'B' Ambulatory Health Care (as defined per IBC and NFPA 101); 3 story
Two part question.
1) We have an interior supply room with an exterior wall (427.2.1). The overall aggregate quantities of O2 & N20 exceed the MAQ (3,000 cf) for the aggregate total allowed. However, in table 307.1(1), it lists two types of oxidizing gas; gaseous and liquefied. O2 is gaseous, yet looking at MSDS sheets (i.e. airgas.com) it lists N20 as a liquefied oxidizing gas. Would the intent then be to categorize the two med-gas quantities differently so you were allowed up to 3,000cf of O2 and roughly 300lbs of N20 per control area?
2) The room is a 1hr constructed with fire barriers extending to exterior walls and to deck above, which is a pan deck/concrete floor assembly with secondary joists spanning beams. and a primary structural frame consisting of columns/beams etc. There are exceptions for supporting construction regarding incidental uses if in VB/IIB/IIB construction types when fully sprinklered. In that table (509), examples for laboratories in higher ed, incinerator rooms, etc. appear to have a similar hazard as a typical med gas room that does not exceed the MAQ for control areas. Is the intent then to provide supporting construction protection for a med gas room with similar building provisions as those listed in 509? It seems to me that 427 should provide that section as well clarifying supporting construction requirements as they do for incidental uses, labs, control areas, etc.
Thanks in advance
Two part question.
1) We have an interior supply room with an exterior wall (427.2.1). The overall aggregate quantities of O2 & N20 exceed the MAQ (3,000 cf) for the aggregate total allowed. However, in table 307.1(1), it lists two types of oxidizing gas; gaseous and liquefied. O2 is gaseous, yet looking at MSDS sheets (i.e. airgas.com) it lists N20 as a liquefied oxidizing gas. Would the intent then be to categorize the two med-gas quantities differently so you were allowed up to 3,000cf of O2 and roughly 300lbs of N20 per control area?
2) The room is a 1hr constructed with fire barriers extending to exterior walls and to deck above, which is a pan deck/concrete floor assembly with secondary joists spanning beams. and a primary structural frame consisting of columns/beams etc. There are exceptions for supporting construction regarding incidental uses if in VB/IIB/IIB construction types when fully sprinklered. In that table (509), examples for laboratories in higher ed, incinerator rooms, etc. appear to have a similar hazard as a typical med gas room that does not exceed the MAQ for control areas. Is the intent then to provide supporting construction protection for a med gas room with similar building provisions as those listed in 509? It seems to me that 427 should provide that section as well clarifying supporting construction requirements as they do for incidental uses, labs, control areas, etc.
Thanks in advance