KenH
SAWHORSE
Hi folks,
I've got an old apartment building where the owner wants to make some updates. Originally a 1964 BOCA type I-B, sprinklered, with primary R-2 occupancy. Virginia USBC 2012.
Currently there is a reception desk in the lobby that the owner wants to enclose with new walls (dashed red lines), combining it with some existing space (solid red lines) that is existing Business occupancy that is a currently Separated from the R-2 with 1-hr walls.
https://www.dropbox.com/s/g564bhmgsetqjwr/WWT lobby plan_reduced.pdf?dl=0
Do you agree that it would be beneficial to have take the B Occupancy to a Non-separated occupancy per 508.3? I'm thinking that would only require a 1/2 hour fire partition (minimum corridor rating per Table 1018.1) instead of a 1-hour separation. That would allow 20-minute fire rated (instead of 45 min.) glazing that passes the hose stream at protected openings, right? I started second-guessing myself and wanted to get some other opinions before we actually order these pricey windows. Please let me know if you have any thoughts and if you see any flaws in my logic or a simpler (cheaper) solution!
Thanks in advance,
Ken
I've got an old apartment building where the owner wants to make some updates. Originally a 1964 BOCA type I-B, sprinklered, with primary R-2 occupancy. Virginia USBC 2012.
Currently there is a reception desk in the lobby that the owner wants to enclose with new walls (dashed red lines), combining it with some existing space (solid red lines) that is existing Business occupancy that is a currently Separated from the R-2 with 1-hr walls.
https://www.dropbox.com/s/g564bhmgsetqjwr/WWT lobby plan_reduced.pdf?dl=0
Do you agree that it would be beneficial to have take the B Occupancy to a Non-separated occupancy per 508.3? I'm thinking that would only require a 1/2 hour fire partition (minimum corridor rating per Table 1018.1) instead of a 1-hour separation. That would allow 20-minute fire rated (instead of 45 min.) glazing that passes the hose stream at protected openings, right? I started second-guessing myself and wanted to get some other opinions before we actually order these pricey windows. Please let me know if you have any thoughts and if you see any flaws in my logic or a simpler (cheaper) solution!
Thanks in advance,
Ken