What is the max allowable building height for a Type IB construction, Group A occupancy building equipped with an automatic sprinkler system?

In Type IB construction, which is a non-combustible construction type, the maximum allowable building height can be significantly increased when an automatic sprinkler system is installed. For Group A occupancy, which typically includes assembly buildings like theaters, auditoriums, and places of worship, the International Building Code (IBC) provides specific height limits based on the construction type and the presence of fire protection systems.

With the installation of a fully functional automatic sprinkler system, the height limit for a Type IB construction in Group A occupancy rises to 180 feet. This height allowance is based on the code's recognition that sprinklers greatly enhance fire safety, thereby permitting taller structures. The use of this system mitigates risk by controlling potential fires, which is critical given that assembly occupancies can have large numbers of occupants.

Understanding the distinctions in height limits without the sprinkler system is important, as these would allow for shorter buildings. The differentiation in maximum heights across different constructions and occupancy types reflects the code's framework intended to promote safety while accommodating varied building purposes and designs.