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Low vs Moderate hazard storage - can anyone explain this to me?

Nicole Brooks

Registered User
Sep 21, 2018
Why per IBC Table 508.4 is there a 1hr separation required between Business and S-1 (low hazard storage) and no rating required between Business and S-2 (moderate hazard storage). This doesn't make sense to me.
The separation is to protect the S-1 from the B. Not the other way around. The B and S-2 are similar hazards so no separation between them.
hahaha I did not refer to the table just the question. Yes the S-1 and B requires no separation. B and S-2 requires separation