14B-9-910 Smoke and heat removal.

The provisions of Section 910 of IBC are adopted by reference with the following modifications:

1.   Revise Section 910.2, excluding the exceptions, to read:

"910.2 Where required.

Smoke and heat vents or a mechanical smoke removal system shall be installed as required by Sections 910.2.1 through 910.2.3."

2.   Revise exception 1 to Section 910.2 by deleting "approved."

3.   Revise Section 910.2.1 to read:

"910.2.1 Group F-1 or S-1.

A mechanical smoke removal system installed in accordance with Section 910.4 shall be installed in buildings and portions thereof used as a Group F-1 or S-1 occupancy having more than 50,000 square feet (4645 m2) of undivided area.

Exception: Group S-1 aircraft repair hangars."

4.   Revise Section 910.2.2 to read:

"910.2.2 High-piled combustible storage.

A mechanical smoke removal system installed in accordance with Section 910.4 shall be installed in buildings and portions thereof containing high-piled combustible storage."

5.   Insert a new Section 910.2.3 to read:

"910.2.3 Exhibition areas.

Automatic smoke and heat vents in accordance with Section 910.3 shall be installed on the topmost occupied story of exhibition areas with a floor area in excess of 10,000 square feet (929 m2). Where the upper surface of a story containing an exhibition area is not a roof assembly, a mechanical smoke removal system in accordance with Section 910.4 shall be installed."

6.   Revise Section 910.3.2 by adding the following sentence at the end:

"Vents shall be spaced no greater than 100 feet (30.5 m) apart, on center."

7.   Revise Section 910.4.1 by deleting "approved."