1103.5 Sprinkler Systems
Winters Municipal Code · 2026-09 edition · updated 2026-09-27 · Winters
An automatic fire sprinkler system shall be provided in existing buildings in accordance with Sections 1103.5.1 through 1103.5.4.
Any addition, alteration, or remodel which causes the total square footage to exceed the allowable floor area per Table 903.2 by more than 50%, shall require the entire building be protected by an automatic sprinkler system installed in accordance with Sections 903.3.1 through 903.3.8.
Exception: Group R-3 Occupancy
Existing buildings which undergo a change in use, character, or occupancy classification shall require the entire building be protected by an automatic sprinkler system installed in accordance with Section 903.3 when the area of the building exceeds the allowable square footage in Table 903.2.
For Group R-3 occupancies, additions, alterations, or remodels that increase the existing floor area by more than 50% shall require the entire building to be protected by an automatic sprinkler system.
An automatic sprinkler system shall be installed in existing Group R-3 occupancies throughout the building where due to additions, alterations or remodels the accumulative total square footage exceeds 4,000 square feet, or when the total square footage of the increases exceed 50% of the original building.
- D. Section 903.2 is amended to read as follows:
903.2 Where Required.
Approved automatic sprinkler systems shall be installed in new buildings and structures as set forth in Section 903.2 on the basis of occupancy classification, type of construction and square footage as specified in Table 903.2 as added hereto:
| Summary of A T |
Table 903. utomatic Spri ype Of Constr Total Squa |
2 nkler Requirem uction re Footage of |
ents Floor Area |
||
|---|---|---|---|---|---|
| Occupancy | I | II | III | IV | V |
| A-1 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| A-2 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| A-3 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| A-4 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| B | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| E-private | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| E-Daycare | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| F-1 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| F-2 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| Occupancy | I | II | III | IV | V |
| M | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| S-1 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| S-2 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| U | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
The floor areas set forth in Table 903.2 shall be the total floor area of buildings or structures respective of area separation walls.
- E. Section 903.2.8.1 is amended to read as follows:
903.2.8.1 Group R-3. Calculation of the total floor area of Group R-3 occupancies shall include unfinished areas having a clearance height of seven feet (7') or greater at any single point. Unfinished areas may utilize California Building Code Section 1208.2, Exception 2 to determine floor areas to be included in the overall floor area calculation.
Exceptions:
Systems which are required to mitigate deficiencies shall be installed in accordance with requirements as deemed necessary by the fire code official.
In Group R-3 occupancies, the floor area of an attached garage shall be included in the square footage calculation to determinate the total floor area of the occupancy. Attached garages are required to be protected by an automatic sprinkler system when installed in the structure.
- F. Section 903.2.1 is amended to read as follows:
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