I am looking at a Volunteer Fire Department. 5,500 sf feet total, 2,108 sf apparatus bay and 3,392 offices and meeting areas. We are providing a supervised sprinkler system throughout the building. My question is what hour rating should the wall be between the apparatus bay (fire trucks and ambulances) and the office and meeting areas. We thought a 2 hour wall but with the sprinkler system can that be reduced to 1 hour like the IBC allows?