AnsweredAssumed Answered

How to calculate square footage that triggers certain requirements.

Question asked by Amy Land on Jan 30, 2018
Latest reply on Jan 30, 2018 by Milton Werner

My question is : How does one measure square footage for particular areas of Code that trigger specific items?

Example: I have a new school (education) that is 11800sf with a 500sf non occupied HVAC 2nd floor. NFPA 101 (2015 edition) requires sprinklers in educational occupancies over 12000sf. Do I count only occupiable space (11800sf)? Do I count all square footage under roof (including attached covered porches/overhangs)? or do I count HVAC area with both floors (total of 12300sf)? Is there any where in Code that this is clarified (how to measure for this)? Am I over looking something so simple?

My problem: I have an architect saying that only occupiable stories are counted. He is referencing commentary in the annex for the definition of occupiable story (101: While I responded with this is only a definition, I have nothing to hang my hat on as to how square footage is determined for 101: (or any other Code requirement based on square footage).