International Building Code Section 3402

International Building Code 3402.1

Definitions. The following term shall, for the purposes
of this chapter and as used elsewhere in the code, have the following
PRIMARYFUNCTION.Aprimary function is a major activity
for which the facility is intended. Areas that contain a primary
function include, but are not limited to, the customer
service lobby of a bank, the dining area of a cafeteria, the meeting
rooms in a conference center, as well as offices and other
work areas in which the activities of the public accommodation
or other private entity using the facility are carried out.
Mechanical rooms, boiler rooms, supply storage rooms,
employee lounges or locker rooms, janitorial closets,
entrances, corridors and restrooms are not areas containing a
primary function.
TECHNICALLY INFEASIBLE. An alteration of a building
or a facility that has little likelihood of being accomplished
because the existing structural conditions require the removal
or alteration of a load-bearing member that is an essential part
of the structural frame, or because other existing physical or
site constraints prohibit modification or addition of elements,
spaces or features which are in full and strict compliance with
the minimum requirements for newconstruction and which are
necessary to provide accessibility.