The Taproom Accessory Claim

Start with the function: the taproom serves food and drink to seated and standing patrons. That is Group A-2.

Test the accessory claim under IBC §508.2. An accessory occupancy must not exceed 10 percent of the floor area of the story and must be ancillary to the main occupancy. Here 3,200 ÷ 15,000 = 21 percent - more than double the threshold. The taproom cannot be accessory; it is a second occupancy, and the building is a mixed occupancy (A-2 and F-1) requiring either separation per Table 508.4 or a nonseparated design under §508.3 with all the height/area and sprinkler conditions satisfied.

Estimate the occupant load for the A-2 fire area so the rest of the review has a number: roughly 2,400 square feet of table-and-chair area at 15 net, plus the bar footprint at 5 net for standing. That lands well above 100 occupants, which drives exits, alarms, and sprinkler thresholds. The number does not need to be exact at plan review, but it must be calculated and posted, not estimated by the owner from seat count alone - standing bar patrons count.

Classification drives four separate requirements:

1. Number of exits. At an occupant load well over 49, a minimum of two means of egress is required, remotely separated. A single front door serving the taproom fails.
2. Egress capacity. Exit access and corridors at 0.2 inch per occupant, stairs at 0.3 inch per occupant. The 44-inch door that looked generous for a 'bar area' may be marginal once 170-plus occupants are counted.
3. Fire alarm. Assembly occupancies require notification throughout the assembly, including visible notification where required and coverage in the taproom, not just horns in production. The current arrangement leaves patrons without notification.
4. Separation and enclosure. The A-2/F-1 separation - whether by rated construction or by the nonseparated provisions - must be established on the plans, and the live music corner must be reviewed as a stage area, which can add finishes and egress requirements.

Also verify the sprinkler design covers the new layout: the taproom is a light-hazard area but the bar, storage, and any stage drapery need to be inside the calculated design area, and any added partitions must not obstruct spray patterns.

A wall that terminates at a suspended ceiling does not form the separation it purports to form. Unless the ceiling assembly itself is an approved fire-resistance-rated membrane, smoke and fire travel freely through the plenum above the wall, so the separation is cosmetic.

Requirements:

• Extend the separation tight to the structural deck with an approved material, or submit an approved alternative demonstrating the ceiling is a rated assembly and the wall is adequately tied to it.
• Detail how penetrations (sprinkler branch lines, ductwork, conduit) are protected at the wall line, and require draft stops where the plenum exceeds the code's compartment size.
• Confirm the plenum is not being used as an air-return plenum without the corresponding construction and protection requirements.

Hold the certificate of occupancy on the separation, the notification appliances, and the calculated and posted occupant load. None of these are items to accept on a promise of later correction, because the floor will be occupied Friday night regardless.