7-14-505 Glass Requirements – Windows, Doors, and Skylights

(1) In all new construction or any Building addition requiring a building permit located in an Overpressure zone, the following types and maximum sizes of glass or glass substitutes for windows, doors and skylights shall be required:

a. In Zone B (0.35 psi to 0.50 psi), either the glass types in subsection (i) or the glass substitute in subsection (ii) as set forth below may be allowed:

i. If glass is used, the following glass and glass types shall be required:

Maximum Area	Glass Type
6.0 SF	1/4” laminated
12.0 SF	3/8” laminated
17.5 SF	5/32” fully-tempered
26.5 SF	3/16” fully-tempered
40.0 SF	1/4” fully-tempered

Single regular (annealed) glass, heat-strengthened (partially tempered) glass, and wired glass shall not be permitted.

ii. If a glass substitute is used, all inboard windows or all outboard windows, but not both, shall be non-lockable and shall be constructed of material conforming to federal specification FSL-P-507 and to the following minimum thicknesses:

Maximum Size	Minimum Size
3' Wide	1/4” thickness
3' to 4' Wide	3/8” thickness

No glass substitute wider than four feet shall be permitted.

b. In Zone C (0.2 psi to 0.35 psi), either the glass types in subsection (i) or the glass substitute in subsection (ii) as set forth below may be allowed:

i. If glass is used, the following glass and glass types shall be required:

Maximum Area	Glass Type
8.0 SF	1/4” laminated
17.0 SF	3/8” laminated
25.5 SF	5/32” fully-tempered
37.5 SF	3/16” fully-tempered
60.0 SF	1/4” fully-tempered

Single regular (annealed) glass, heat-strengthened (partially tempered) glass, and wired glass shall not be permitted.

ii. If a glass substitute is used, all inboard windows or all outboard windows, but not both, shall be non-lockable and shall be constructed of material conforming to federal specification F8L-P-507 and to the following minimum thickness:

Maximum Size	Minimum Thickness
3' Wide	3/16” thickness
3' to 4' Wide	1/4” thickness

No window wider than four feet shall be permitted.

(2) All glass (inboard and outboard), whether factory-fabricated insulated glass, combinations of prime and storm windows, or combinations of prime and storm doors, shall comply with the requirements of paragraph (A). An exception is the outboard pane of any double glazed window whose top edge is 24" or less above Grade. This glass may be regular (annealed) glass complying with all other applicable Uniform Building Code requirements.

(3) The laminated and fully-tempered glass shall be certified by the Safety Glazing Certification Council and be so designated on a permanent monogram.

(4) Factory fabricated insulating glass shall be certified by the Insulating Glass Certification Council and be so marked.

(5) The requirements of this section shall be met when any windows, doors or skylights are replaced or added in any Structures which originally had to comply with this section.