Plans Approver
Silver Member
1. IMC 602.1 limits a plenum to one (1) fire area.
2. IMC 607.5.1 and 607.5.2 (as well as IBC 716.5.1 and 716.5.2) permit ducts and air transfer openings in firewalls and fire barriers respectively.
Size of all openings meet the limitations of 705.8 and meet the requirements of IBC 705.11 Exception and 712.
I have always enforced 602.1, but, in discussion with an M.E., he got me to doubting my position.
The question is: do the specifics of 607.5.1 and 607.5.2 override the general 602.1 for an air transfer opening between plenums on each side of a firewall or fire barrier?
2. IMC 607.5.1 and 607.5.2 (as well as IBC 716.5.1 and 716.5.2) permit ducts and air transfer openings in firewalls and fire barriers respectively.
Size of all openings meet the limitations of 705.8 and meet the requirements of IBC 705.11 Exception and 712.
I have always enforced 602.1, but, in discussion with an M.E., he got me to doubting my position.
The question is: do the specifics of 607.5.1 and 607.5.2 override the general 602.1 for an air transfer opening between plenums on each side of a firewall or fire barrier?