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Separation of occupancies through fire rated walls

Question asked by suneeb.riaz on Nov 14, 2019

As per NFPA 101 , the multiple occupancies of separated occupancy type are to be separated from each other by fire barriers as in Multiple occupancies of mixed type  the separation requirements are not noted except the hazardous areas protection, so in an educational occupancy a dining/lunch area with more than 50 people is defined as assembly occupancy would require still to be separated from corridor and areas surrounding it by a fire barrier or no.
I have seen many engineers following it but could not find a basis or reference to it.