Steel Interchange

Open Parking Garages

Answer

If the parking structure is considered “open” (see IBC Section 406.3), Table 406.3.5 defines the area and height limitations based on the type of construction. As long as all the provisions described in Section 406.3.6 are met, an open parking garage with eight tiers or less of parking and a limited area per tier (as described in 406.3.6) is allowed to be classified as Type IIB Construction. In Type IIB Construction, the structural frame has a zero-hour fire-resistance rating requirement.

Erin Criste