The 2012 IGCC is a new addition to the I-Code® family of model codes. IGCC is
intended to overlay—or be an extension of—other ICC model codes such as the International
Building Code (IBC) and International Energy Conservation Code (IECC). For example,
IGCC targets 2012 IECC requirements as a baseline for its energy provisions. 2012
IGCC provides jurisdictions a means to augment the baseline by enforcing additional
local requirements and project electives defined in 2012 IGCC. The IGCC contains
prescriptive- and performance-based requirements.
IGCC is intended to be used by code officials as an enforcement tool to compel the
adoption of green and sustainable building design and construction practices significantly
beyond the construction market segments addressed by voluntary rating systems. It
is designed to allow jurisdictions to tailor the code to address local environmental
concerns and advance local agendas.
IGCC applies to the construction of high-performance commercial buildings, structures
and systems, including existing buildings subject to alterations and additions,
utilizing traditional and innovative construction practices. It also applies to
residential occupancies other than low-rise residential buildings that fall under
the scope of the International Residential Code.