Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 7 - Fire and Smoke Protection Features
Section 706 - FIRE WALLS
Subsection 706.4 - Fire-resistance rating
Universal Citation: 780 CMR MA Code of Regs 706.4
Current through Register 1531, September 27, 2024
Fire walls shall have a fire-resistance rating of not less than that required by Table 706.4.
TABLE 706.4 FIRE WALL FIRE-RESISTANCE RATINGS
| GROUP | FIRE-RESISTANCE RATING (hours) |
| A, B, E, H-4, I, R-1, R-2, U | 3a |
| F-1, H-3b, H-5, M, S-1 | 3 |
| H-1, H-2 | 4b |
| F-2, S-2, R-3, R-4 | 2 |
| a. In Type II or V construction, walls shall be permitted to have a 2-hour fire-resistance rating. |
| b. For Group H-1, H-2 or H-3 buildings, also see Sections 415.4 and 415.5. |
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