HomeMy WebLinkAboutFile Documents.427 Rio Grande Pl.0016.2019 (35).ACBK2015 INTERNATIONAL BUILDING CODE
SECTION 506
BUILDING AREA
506.1.3 Basements. Basements need not be included in
the total allowable floor area of a building provided the
total area of such basements does not exceed the area permitted
for a one-story above grade plane building.
506.2.4 Mixed-occupancy, multistory buildings. Each
story of a mixed-occupancy building with more than one
story above grade plane shall individually comply with the
applicable requirements of Section 508.1. For buildings
with more than three stories above grade plane, the total
building area shall be such that the aggregate sum of the
ratios of the actual area of each story divided by the allowable
area of such stories, determined in accordance with
Equation 5-3 based on the applicable provisions of Section
508.1, shall not exceed three.
Aa = [At +(NS × If)] (Equation 5-3)
where:
Aa = Allowable area (square feet).
At = Tabular allowable area factor (NS, S13R or SM
value, as applicable) in accordance with Table
506.2.
NS = Tabular allowable area factor in accordance with
Table 506.2 for a nonsprinklered building
(regardless of whether the building is sprinklered).
If = Area factor increase due to frontage (percent) as
calculated in accordance with Section 506.3.
Exception: For buildings designed as separated occupancies
under Section 508.4 and equipped throughout
with an automatic sprinkler system installed in accordance
with Section 903.3.1.2, the total building area
shall be such that the aggregate sum of the ratios of the
actual area of each story divided by the allowable area
of such stories determined in accordance with Equation
5-3 based on the applicable provisions of Section
508.1, shall not exceed four.
SECTION 508
MIXED USE AND OCCUPANCY
508.1 General. Each portion of a building shall be individually
classified in accordance with Section 302.1. Where a
building contains more than one occupancy group, the building
or portion thereof shall comply with the applicable provisions
of Section 508.2, 508.3 or 508.4, or a combination of
these sections.
508.3 Nonseparated occupancies. Buildings or portions of
buildings that comply with the provisions of this section shall
be considered as nonseparated occupancies.
508.3.2 Allowable building area and height. The allowable
building area and height of the building or portion
thereof shall be based on the most restrictive allowances
for the occupancy groups under consideration for the type
of construction of the building in accordance with Section
503.1.
508.4 Separated occupancies. Buildings or portions of
buildings that comply with the provisions of this section shall
be considered as separated occupancies.
508.4.2 Allowable building area. In each story, the building
area shall be such that the sum of the ratios of the
actual building area of each separated occupancy divided
by the allowable building area of each separated occupancy
shall not exceed 1.