H115 Thickness of Signs — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § H115 · Effective January 1, 2026 · Official source: Building Standards Commission
H115.1 General.¶
Tables H115.1(1) and H115.1(2) provide requirements for the size, thicknesses and types of glass panels and projection signs, respectively.
TABLE H115.1(1)—SIZE, THICKNESS AND TYPE OF GLASS PANELS IN SIGNS
| MAXIMUM SIZE OF EXPOSED PANEL | MAXIMUM SIZE OF EXPOSED PANEL | MINIMUM THICKNESS OF GLASS (inches) |
TYPE OF GLASS |
|---|---|---|---|
| Any dimension (inches) | Area (square inches) | Area (square inches) | Area (square inches) |
| 30 | 500 | 1/8 | Plain, plate or wired |
| 45 | 700 | 3/16 | Plain, plate or wired |
| 144 | 3,600 | 1/4 | Plain, plate or wired |
| > 144 | > 3,600 | 1/4 | Wired glass |
| For SI: 1 inch = 25.4 mm, 1 square inch = 645.16 mm2. |
TABLE H115.1(2)—THICKNESS OF PROJECTION SIGN
| PROJECTION (feet) | MAXIMUM THICKNESS (feet) |
|---|---|
| 5 | 2 |
| 4 | 2.5 |
| 3 | 3 |
| 2 | 3.5 |
| 1 | 4 |
| For SI: 1 foot = 304.8 mm. | For SI: 1 foot = 304.8 mm. |
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