International Building Code Section 2401

International Building Code 2401.1

Scope. The provisions of this chapter shall govern the
materials, design, construction and quality of glass, lighttransmitting
ceramic and light-transmitting plastic panels for
exterior and interior use in both vertical and sloped applications
in buildings and structures.

International Building Code 2401.2

Glazing replacement. The installation of replacement
glass shall be as required for new installations.