175.29 SECTION 508.5 AMENDED - LIVE/WORK UNITS.

Section 508.5., Live/Work units, of the IBC, is hereby amended by deleting the exception and inserting in lieu thereof the following 2 exceptions:

Section 508.5 Live/Work units exceptions:

1. Dwelling or sleeping units that include an office that is less than 10 percent of the area of the dwelling unit are permitted to be classified as dwelling units with accessory occupancies in accordance with Section 508.2

2. Detached one- and two-family dwellings and townhouses that include an office that is less than 20 percent of the area of the dwelling unit and constructed in accordance with the International Residential

175.30 SECTION 508.5.1 AMENDED - LIMITATIONS.

Section 508.5.1, Limitations, of the IBC, is hereby amended by deleting item #3 and inserting in lieu thereof the following:

Section 508.5.1 Limitations  

#3. The nonresidential area function shall be limited to floors of the live/work unit with exit at the 1st story or a basement walkout of the live/work unit.

175.31 SECTION 508.5.2 AMENDED - OCCUPANCIES.

Section 508.5.2, Occupancies, of the IBC, is hereby amended by numbering the existing exception as #1 and thereafter adding the following exception #2:

Section 508.5.2 Occupancies

2. Live/work units located within detached one- and two-family dwellings and townhouses may be constructed in accordance with the International Residential Code.

175.32 SECTION 707.5 ADDITION - CONTINUITY.

Section 707.5, Continuity, of the IBC, is hereby amended by adding the following exception #4:

Section 707.5 Continuity exception

4. Shafts required to be constructed as per section 713.3.2 having exterior walls that are not required to be fire rated per section 707.4 shall be permitted to be constructed of materials permitted by the building type of construction so long as a complete non-combustible separation of 2 hours is provided between the shaft and adjoining structure. In addition, the provisions of section 1023.7 shall be met.

175.33 SECTION 713.3 AMENDED - MATERIALS.

Section 713.3, Materials, of the IBC, is hereby amended by deleting said section and inserting in lieu thereof the following:

Section 713.3 Materials Shaft enclosures shall be constructed of materials as described in Sections 713.3.1 and 713.3.2

175.34 SECTION 713.3.1 ADDITION - ONE-HOUR SHAFT ENCLOSURES.

Section 713.3.1, One-Hour Shaft Enclosures, of the IBC, is hereby established by adding the following section:

Section 713.3.1 One-hour Shaft Enclosures Shafts that are allowed to have a fire resistance rating of 1 hour or less are allowed to be constructed of materials permitted by the building type of construction.

175.35 SECTION 713.3.2 ADDITION - TWO-HOUR SHAFT ENCLOSURES.

Section 713.3.2, Two-Hour Shaft Enclosures, of the IBC, is hereby established by adding the following section:

Section 713.3.2 Two-Hour Shaft Enclosures Shafts that are required to have a fire resistance rating of 2 hours or more serving Interior Exit Stairs or Interior Exit Ramps shall be constructed of concrete or masonry for types III, IV and V construction. Interior Exit Stairs or Interior Exit Ramps in type I and II construction and all other shafts that are required to have a fire resistance rating of 2 hours or more shall be constructed of non-combustible materials.

175.36 SECTION 903.2.11.1.3 AMENDED - BASEMENTS .

Section 903.2.11.1.3, Basements, of the IBC, is hereby amended by deleting said section and inserting in lieu thereof the following:

Section 903.2.11.1.3 Basements Where any portion of a basement is located more than 75 feet (22 860 mm) from openings required by Section 903.2.11.1, the basement shall be equipped throughout with an approved automatic sprinkler system.