Bellflower Municipal Code Ch. 15.60 Residential Code (CA)

§ 15.60.010. Residential Code—Adopted by Reference; Where Filed.¶

Chapter 1 Division II and Chapters 2 through 10, and 44 of California Code of Regulations Title 24, Part 2.5 (the 2025 California Residential Code) are adopted by reference as the Residential Code of the City of Bellflower.

In accordance with California Government Code Section 50022.6, one copy of the chapters and appendices must remain on file with the Building Official within the Department of Planning and must be at all times maintained by the Building Official for use and examination by the public.

(Ord. 1256 § 3, 11/25/13; Ord. 1325 § 9, 11/14/16; Ord. 1381 § 9, 12/09/19; Ord. 1421 § 9, 12/15/22; Ord. 1422 § 9, 12/12/22; Ord. 1449, 9/22/2025; Ord. 1450, 9/22/2025)

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§ 15.60.020. Administrative Provisions.¶

The text within Chapter 1 Division II is amended to read as follows:

Chapter 1 Division II
Administrative Provisions
For administrative provisions for this Code, see Section 15.04.040 .

(Ord. 1381 § 9, 12/09/19; Ord. 1421 § 9, 12/15/22; Ord. 1422 § 9, 12/12/22; Ord. 1449, 9/22/2025; Ord. 1450, 9/22/2025)

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§ 15.60.030. Design Criteria.¶

A. Table R301.2(1) is amended, by deleting Table R301.2(1) and replacing it with a new Table R301.2(1), to read as follows:

TABLE R301.2(1) CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA

Ground Snow Load o	WIND DESIGN	WIND DESIGN	WIND DESIGN	WIND DESIGN	WIND DESIGN	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM	SUBJECT TO DAMAGE FROM
	Speed mph d	Topo- graphic effects k	Special Wind l Region	Wind-borne debris zone m	Seismic Design Category f	Weathering a	Frost line b Depth	Termite c	Winter Design Temp e	Ice Barrier Under-Layment Required h	Flood Hazards g	Air Freezing Index i	Mean Annual Temp j
Zero	95	Exposure B	Yes	No	D 2 or E	Negligible	12-24"	Very Heavy	40	No	Yes	0	63

MANUAL J DESIGN CRITERIA n

Elevation	Latitude	Winter Heating	Summer Cooling	Altitude Correction Factor	Indoor Design Temperature	Design Temperature Cooling	Heat Temperature Difference
79	33.88	37	91	N/A	70	75	—

Cooling Temperature Difference	Wind Velocity Heating	Wind Velocity Cooling	Coincident Wet Bulb	Coincident Wet Bulb	Daily Range	Winter Humidity	Summer Humidity
7	-	-—	69	69	27	-	7 (50% RH)

For SI: 1 pound per square foot = 0.0479 kPa, 1 mile per hour = 0.447 m/s.
a. Where weathering requires a higher strength concrete or grade of masonry than necessary to satisfy the structural requirements of this code, the frost line depth strength required for weathering shall govern. The weathering column shall be filled in with the weathering index, "negligible," "moderate" or "severe" for concrete as determined from Figure R301.2(1). The grade of masonry units shall be determined from ASTM C34, ASTM C55, ASTM C62, ASTM C73, ASTM C90, ASTM C129, ASTM C145, ASTM C216 or ASTM C652.
b. Where the frost line depth requires deeper footings than indicated in Figure R403.1(1), the frost line depth strength required for weathering shall govern. The jurisdiction shall fill in the frost line depth column with the minimum depth of footing below finish grade.
c. The jurisdiction shall fill in this part of the table to indicate the need for protection depending on whether there has been a history of local subterranean termite damage.
d. The jurisdiction shall fill in this part of the table with the wind speed from the ultimate design wind speeds map [Figure R301.2(2)]. Wind exposure category shall be determined on a site-specific basis in accordance with Section R301.2.1.4.
e. The jurisdiction shall fill in this section of the table to establish the design criteria using Table 10A from ACCA Manual J or established criteria determined by the jurisdiction.
f. The jurisdiction shall fill in this part of the table with the seismic design category determined from Section R301.2.2.1.
g. The jurisdiction shall fill in this part of the table with: the date of the jurisdiction's entry into the National Flood Insurance Program (date of adoption of the first code or ordinance for management of flood hazard areas); and the title and date of the currently effective Flood Insurance Study or other flood hazard study and maps adopted by the authority having jurisdiction, as amended.
h. In accordance with Sections R905.1.2, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1 and R905.8.3.1, where there has been a history of local damage from the effects of ice damming, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall fill in this part of the table with "NO."
i. The jurisdiction shall fill in this part of the table with the 100-year return period air freezing index (BF-days) from Figure R403.3(2) or from the 100-year (99 percent) value on the National Climatic Data Center data table "Air Freezing Index - USA Method (Base 32°F)."
j. The jurisdiction shall fill in this part of the table with the mean annual temperature from the National Climatic Data Center data table "Air Freezing Index-USA Method (Base 32° F)."
k. In accordance with Section R301.2.1.5, where there is local historical data documenting structural damage to buildings due to topographic wind speed-up effects, the jurisdiction shall fill in this part of the table with "YES." Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
l. In accordance with Figure R301.2(2), where there is local historical data documenting unusual wind conditions, the jurisdiction shall fill in this part of the table with "YES" and identify any specific requirements. Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
m. In accordance with Section R301.2.1.2 the jurisdiction shall indicate the wind-borne debris wind zone(s). Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
n. The jurisdiction shall fill in these sections of the table to establish the design criteria using Table 1a or 1b from ACCA Manual J or established criteria determined by the jurisdiction.
o. The jurisdiction shall fill in this section of the allowable stress design table using the Ground Snow Loads in Figure R301.2(3).

(Ord. 1449, 9/22/2025; Ord. 1450, 9/22/2025)

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§ 15.60.040. Soil Tests.¶

A. Section R401.4.1.1.5.1 is added to read as follows:

R401.4.1.1.5.1 A soils investigation report shall be provided for all projects exceeding 750 square feet or more than one story in height. Projects under 750 square feet may meet the necessary seismic hazard mitigation following the City of Bellflower Seismic Hazard Mitigation handout.

B. Section R902.1 is amended, by deleting the entire section and adding a new section, to read as follows:

R902.1 Roofing covering materials. Roofs must be covered with materials as set forth in Sections R904 and R905. A minimum Class A or B roofing must be installed in areas designated by this section. Classes A and B roofing required by this section to be listed must be tested in accordance with UL 790 or ASTM E 108.

Exceptions:

1.	Class A roof assemblies include those with coverings of brick, masonry and exposed concrete roof deck.
2.	Class A roof assemblies also include ferrous or copper shingles or sheets, metal sheets and shingles, clay or concrete roof tile, or slate installed on noncombustible decks or ferrous, copper or metal sheets installed without a roof deckon noncombustable framing.
3.	Class A roof assemblies include minimum 16 ounces per square foot (4.882 kg/m 2 ) copper sheets installed over combustible decks.
4.	Class A roof assemblies include slate installed over ASTM D226, Type II underlayment over combustible decks.

C. Section R902.1.2 is amended, by deleting the entire section and replacing it with a new section, to read as follows:

R902.1.2 Roof coverings within all other areas. The entire roof covering of every existing structure where more than 50 percent of the total roof area is replaced within any one-year period, the entire roof covering of every new structure, and any roof covering applied in the alteration, repair or replacement of the roof of every existing structure, shall be a fire-retardant roof covering that is at least Class B.

(Ord. 1449, 9/22/2025; Ord. 1450, 9/22/2025)

Exceptions & meaning →