HomeMy WebLinkAboutOrdinance - 2558 - Amend Title 16ORDINANCE NO. 2558
AN ORDINANCE OF THE CITY OF REDDING AMENDING REDDING
MUNICIPAL CODE TITLE 16 (BUILDINGS AND CONSTRUCTION)
CHAPTER 16.02 (BUILDING CODE) BY AMENDING SECTION 16.02.010;
CHAPTER 16.03 (RESIDENTIAL CODE) BY AMENDING SECTION 16.03.010;
CHAPTER 16.04 (MECHANICAL CODE) BY AMENDING SECTION 16.04.010;
CHAPTER 16.05 (PLUMBING CODE) BY AMENDING SECTION 16.05.010;
CHAPTER 16.06 (ELECTRICAL CODE) BY AMENDING SECTION 16.06.010;
CHAPTER 16.07 (ENERGY CODE) BY AMENDING SECTION 16.07.010;
CHAPTER 16.08 (GREEN BUILDING CODE) BY AMENDING SECTION
16.08.010 AND MAKING FINDINGS OF FACTS RELATING TO LOCAL
CLIMATIC, GEOLOGICAL, AND TOPOGRAPHIC CONDITIONS, ALL
RELATING TO THE ADOPTION OF THE CALIFORNIA BUILDING
STANDARDS CODES
THE CITY COUNCIL OF THE CITY OF REDDING DOES ORDAIN AS FOLLOWS:
Section 1. Findings of fact and need for changes or modifications to the 2016 State Building
Standards Code because of local conditions.
A. Changes or Modifications. Pursuant to Section 17958.5, 17958.7 and 18941.5 of the State of
California Health and Safety Code, the City of Redding adopts and amends the 2016 edition of
the California Building Code, the 2016 edition of the California Residential Code, the 2016
edition of the California Plumbing and Mechanical Codes, the 2016 edition of the California
Electrical Code and the 2016 edition of the California Green Building Code and the 2016 State
Building Standards Code as they pertain to the regulation of buildings and structures.
B. Findings. Pursuant to Sections 17958.5, 17958.7 and 18941.5 of the State of California Health
and Safety Code, the City of Redding has determined and finds the attached changes or
modifications are needed and are reasonably necessary because of local climatic, geological, and
topographic conditions.
C. Local Conditions. Local conditions have an adverse effect on the potential for life and property
loss, making necessary changes or modifications to the 2016 California State Building Standards
Code in order to establish and maintain an environment which will provide the community a
desirable level of protection.
Below are listed adverse local climatic, geological, and topographic conditions:
1. Climatic.
a
9J
a. Precipitation. The normal rainfall for the City of Redding is approximately 33.6
inches annually. Winter storms are responsible for the heaviest intensity of ✓�
precipitation, with two-thirds of the rain coming between December and March (C
and 15 percent between April and June. The City typically experiences snow
once or twice a year, with depth of less than a foot. Snow depths have attained
18" or more at least twice in the last 100 years. In both cases, there were building
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failures due to the weight of the snow. Snow in Redding is typically wet and is
frequently rained upon. Drifting snows have not been an issue within the City.
b. Temperature. Summer sunshine is abundant in the Redding area, with over 39
days a year with temperatures of 100 degrees or higher. The Northern California
valley sees approximately 200 days of clear skies, with May through September
having temperature ranges between 95 and 115 degrees. Winter temperatures
occasionally dip below freezing at night.
2. Geological and Topographic.
a. The City of Redding is located in Shasta County in Northern California. It is
approximately 100 miles south of the Oregon border and 160 miles north of
Sacramento. Redding's population in 2010 was approximately 90,000, which
makes Redding the largest city in Shasta County, along with being the largest city
in California north of Sacramento.
The City encompasses approximately 61 square miles, was founded in 1872, and
incorporated in 1887. Much of the downtown area is comprised of construction
dating back to the late 1800s and the early 1900s.
Soil conditions often consist of varying types of soils at different depths, leading
to saturated soil conditions during winter rains and underground migration of
water at all times of the year.
b. The City consists of flat lands, hills, valleys, and ridges. The flatter areas are
found in the southeast portion of the City. Most of the existing commercial areas
are on relatively flat land.
Residential development occurs in the hilly areas on the west and northeast
portions of the City. The majority of the hills in these areas have slopes ranging
from 15 to 30 percent. The steeper slopes, west and north of the City, are planned
for open -space use.
Elevations are varied within the City and may be 500 feet to 1,000 feet above sea
level.
C. The relatively young geological processes that have created earthquakes in
California are also active today in Redding. The largest recorded earthquake in
the Redding area occurred in 1940, at 5.7 on the Richter scale, and the last in
1998, with a 5.2 on the Richter scale. USGS seismic hazard mapping indicates
probabilistic peak ground accelerations (PGA) of 16%g, 18%g, and 22%g on firm
rock, soft rock, and alluvium site soil categories, respectively. Assuming a peak
ground acceleration (PGA) of 18%g over the entire City, estimated building
damage ratios of 6% for older structures located in the immediate downtown area
of the City, and 3% for all other areas within the City, there is a 10% probability
that the City will suffer an estimated $200 million in damage in the next 50 years
(once every 475 years).
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D. Summary. The above local climatic, geologic, and topographic conditions create the potential
for excessive water below building slabs, snow loads, and increased seismic hazards. There is a
history of problems due to water migration up through floor slabs and into the interior space of
buildings in the area as well as failures due to snow loads.
As a result of this "findings of fact," which identifies the various climatic, geological, and
topographical elements, the requirements established by the City of Redding within the adopted
Redding City ordinances are considered "reasonable and necessary" based on the following:
o Climatic, geologic, and topographical conditions necessitate the control of moisture
migration into buildings.
o Geologic conditions necessitate proper design for seismic accelerations.
o Climatic conditions necessitate proper design criteria for snow loads.
Conclusion
Local climatic, geologic, and topographic conditions impact the built environment and necessitate
amendments to the California Building Standards Code.
Therefore, it is found to be reasonably necessary that the State Building Standards Code be changed or
modified to mitigate the effects of the above conditions. Furthermore, California Health and Safety
Code Section 17958.7 requires that the modification or change be expressly marked and identified as to
each finding to which it refers. Therefore, the City of Redding finds that the following table provides
code sections that have been modified pursuant to the ordinance that are building standards as defined in
the Health and Safety Code Section 18909 and the associated referenced conditions or modifications due
to local climatic, geological, and topographical reasons:
CBC SECTION NO. LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
1608
1a
1905.1.7
2c
1613.3.5
2c
1613.3.5.2
2c
1807.1.5
2c
1807.1.6
2c
2308.4.6
la
2308.9.3
2c
3109
lb
CRC SECTION NO. LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
R301.2.2.1.1
2c
R313.2.1.1
lb, 2a
R313.2.2
1b, 2a
R313.2.3
lb, 2a
3
R404.1.4.1
2c
R404.1.4.2
2c
R506.2.3
1a, 2a
CGBC SECTION NO. LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
4.505.2.1(1) la, 2a
Section 2. Title 16 (Buildings and Construction), Chapter 16.02 (Building Code), Section
16.02.010 of the Redding Municipal Code is amended to read as follows:
16.02.010 - California Building Code adopted.
A. That certain document, a copy of which is on file and open for inspection in the city of Redding
permit center, marked and designated as "California Building Code (CBC), 2016 Edition,
Volumes 1 and 2," published by the International Code Council is adopted as the building code
of the city and is included in and made a part of this code as though set forth at length herein.
B.
C.
D.
E.
F.
G.
H.
I.
Snow load CBC Section 1608 is replaced by the following:
1608.1 General. Design snow loads shall be determined by the Building Official.
Delete CBC Section 1905.1.7 and adopt 2016 Los Angeles Area Regional Uniform Code
Program (LARUCP) recommendation 19-01 per the 2016 edition of the LARUCP.
Add the following exception to CBC Section 1613.3.5:
Exception: Structures not assigned to Seismic Design Category E or F above shall be assigned to
Seismic Design Category D.
Add the following exception to CBC Section 1613.3.5.2.
Exception: Seismic Design Category shall be determined per exception to Section 1613.3.5.
Delete CBC Section 1807.1.5 Exception.
Delete CBC Section 1807.1.6.
Amend CBC Section 2308.4.6 to read:
Floor, attic, and roof framing shall be laterally supported in accordance with AF & PA NDS
Section 4.4.1.2.
Amend CBC Sections 3109.2, 3109.3, 3109.4, 3109.4.1, 3109.4.1.7, 3109.4.1.9 and 3109.4.4.2
to read:
3109.2 Definition. The following word and term shall, for the purposes of this section and as
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used elsewhere in this code, have the meaning shown herein.
SWIMMING POOLS. Any structure intended for swimming, recreational bathing, or
wading that contains water over 18 inches (457 mm) deep. This includes in -ground,
above -ground, and on -ground pools; hot tubs; spas and fixed -in-place wading pools.
3109.3 Public Swimming Pools. Public swimming pools shall be completely enclosed by a fence
at least 5 feet (1524 mm) in height or a screen enclosure. Openings in the fence shall not permit
the passage of a 4 -inch diameter (102 mm) sphere. The fence or screen enclosure shall be
equipped with self-closing and self -latching gates.
3109.4 Residential Swimming Pools. Residential swimming pools shall be completely enclosed
by a barrier complying with Section 3109.4.1 through 3109.4.3.
Exception: A spa with a safety cover complying with ASTM F 1346.
3109.4.1 Barrier height and clearances. Residential swimming pools shall be completely
enclosed by a barrier. Dwellings may serve as a portion of the required barrier when in
compliance with the requirements of Section 3109.4.1.8. The top of the barrier shall be at least
60 inches (1524 mm) above grade measured on the side of the barrier that faces away from the
swimming pool. The maximum vertical clearance between grade and the bottom of the barrier
shall be 2 inches (51 mm) measured on the side of the barrier that faces away from the
swimming pool. Where the top of the pool structure is above grade, the barrier is authorized to
be at ground level or mounted on top of the pool structure, and the maximum vertical clearance
between the top of the pool structure and the bottom of the barrier shall be 4 inches (102 mm).
3109.4.1.7 Gates. Access doors or gates shall comply with the requirements of Section
3109.4.1.1 through 3109.4.1.6 and shall be equipped to accommodate a locking device.
Pedestrian -access doors or gates shall open outward away from the pool and shall be self-closing
and have a self -latching device. Pedestrian -access doors or gates shall not be wider than 4 feet.
Doors or gates other than pedestrian access doors or gates shall have self-closing and self -
latching devices. Gates other than pedestrian -access gates are not required to be self-closing and
self -latching when securely locked and located adjacent to a pedestrian -access doors or gate.
Electrically powered vehicle -access gates are not permitted as a part of the barrier. Release
mechanisms shall be in accordance with Sections 1010.1.9 and 1113-309. Where the release
mechanism of the self -latching device is located less than 54 inches (1372 mm) from the bottom
of the doors or gate, the release mechanism shall be located on the pool side of the gate at least 3
inches (76 mm) below the top of the doors or gate, and the doors or gate and barrier shall have
no opening greater than .5 inch (12.7 mm) within 18 inches (457 mm) of the release mechanism.
3109.4.1.9 Pool structure as barrier. Where an above -ground pool structure is used as a barrier or
where the barrier is mounted on top of the pool structure and the means of access is a ladder or
steps, then the ladder or steps either shall be capable of being secured, locked, or removed to
prevent access or the ladder or steps shall be surrounded by a barrier which meets the
requirements of Sections 3109.4.1.1 through 3109.4.1.8. When the ladder or steps are secured,
locked, or removed, any opening created shall not allow the passage of a 4 -inch -diameter (102
mm) sphere. Lockable or removable steps or ladders may be used as an alternate method of
compliance with Section 3109.4.1.8, but not Section 3109.4.1.1 through 3109.4.1.7.
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3109.4.4.2 Construction permit; safety features required. Whenever a construction permit is
issued for the new construction or remodeling of a swimming pool not regulated in Chapter 31B,
it shall be isolated from access by an enclosure that meets the requirements of Section
3109.4.4.3. When a wall of a dwelling serves as part of the required enclosure, the following
shall apply:
1. The residence shall be equipped with exit alarms on those doors providing direct
access to the pool; or
2. All doors providing direct access from the home to the swimming pool shall be
equipped with a self-closing, self -latching device with a release mechanism
placed no lower than 54 inches (1372 mm) above the floor; or
3. The pool shall be equipped with an approved safety pool cover complying with
ASTM F 1346.
Spas shall be protected by either a barrier meeting the requirements of 3109.4.4.3 or by an
approved cover complying with ASTM F 1346.
Other means of protection may be permitted, including that afforded by natural barriers, if the
degree of protection afforded is equal to or greater than that set forth above as determined by the
Building Official.
Existing pools shall be isolated from access by an enclosure which substantially meets the
requirements of Section 3109.4.4.3. When dwellings serve as part of the enclosure, exit alarms
and self-closing and self -latching devices are not required for pools and spas constructed and
installed prior to January 1, 1998.
Section 3. Title 16 (Buildings and Construction) Chapter 16.03 (Residential Code) Section
16.03.010 of the Redding Municipal Code is amended to read as follows:
16.03.010 - California Residential Code adopted.
A. That certain document, a copy being on file and open for inspection in the city of Redding permit
center, marked and designated as "California Residential Code (CRC), 2016 Edition," published
by the International Code Council, is adopted as the residential building code of the city and is
included in and made a part of this code as though set forth at length herein.
B. Add the sentence "SDS shall be taken as greater than 0.50" to the end of California Residential
Code Section R301.2.2.1.1.
C. Section R313.2.1.1 - Other Occupancies.
Section R313.2.1.1 is added to read as follows:
Group S occupancies constructed on private residential zoned parcels shall be designed to NFPA
13D as approved by the fire code official.
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D. Section R313.2.2 — Additions.
Section R313.2.2 is added to read as follows:
Additions to any existing California Residential Building Code regulated buildings that increase
the existing square footage by 50% or more shall meet the requirements for a newly constructed
building. All additions to any existing California Residential Building Code regulated building
with an existing automatic sprinkler system regardless of size shall be required to extend the
sprinkler system into the addition per Section R313.2.
E. Section R313.2.3 — Remodels, alterations, or repairs.
Section R313.2.3 is added to read as follows:
For remodels, alterations, or repairs to an existing California residential Building Code regulated
building involving demolition, removal, alteration, or repair of more than 50% of the structure,
the building shall meet the requirements for a newly constructed building. For purposes of this
section, "50%" threshold shall be applied if the project involves any of the following:
1. The removal, demolition, or repairs of more than 50% of the exterior weight bearing
walls; or
2. The removal, demolition or repair of more than 50% of the roof structure (including the
framing, sheathing, and roof covering of a building but not limited to rafters, trusses,
beams, purlins); or
3. Where the removal, demolition or repair is deemed by the fire code official to be more
than 50% of the structure.
F. Amend CRC Section R326.1 to read:
General. The design and construction of pools and spas shall comply with the California
Building Code.
G. Amend CRC Section R404.1.4.1 to read:
Masonry foundation walls. In buildings assigned to Seismic Design Category D0, D1, or D2, as
established in Table R301.2(1), masonry foundation walls shall comply with this section. In
addition to the requirements of Table R404.1.1(1), plain masonry foundation walls shall comply
with the following:
1. Wall heights shall not exceed 4 feet (1219 mm).
2. Unbalanced backfill height shall not exceed 3 feet (914 mm).
3. Minimum nominal thickness for plain masonry foundation walls shall be 8 inches
(203mm).
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4. Masonry stem walls shall have a minimum vertical reinforcement of one No. 3
(No. 10) bar located a maximum of 4 feet (1219mm) on center in grouted cells.
5. Vertical reinforcement shall be tied to the horizontal reinforcement in the
footings.
Foundation walls in buildings assigned to Seismic Design Category D0, D1 or D2, as established
in Table R301.2(1), supporting more than 3 feet (914 mm) of unbalanced backfill or exceeding 4
feet (1219 mm) in heights shall be constructed in accordance with the provisions of ACI
530/ASCE 5/TMS 402 or NCMA TR68-A. Masonry foundation walls shall have two No. 4 (No.
13) horizontal bars located in the upper 12 inches (305mm) of the wall.
H. Amend CRC Section R404.1.4.2 to read:
R404.1.4.2 Concrete foundation walls. In buildings assigned to Seismic Design Category D0, D1
or D2, as established in Table R301.2(1), concrete foundation walls that support light -frame
walls shall comply with this section, and concrete foundation walls that support above -grade
concrete walls shall comply with ACI 318, ACI 332 or PCA 100 (see Section R404.1.3). In
addition to the horizontal reinforcement required by Table R404.1.2(1), plain concrete walls
supporting light -frame walls shall comply with the following:
1. Wall height shall not exceed 4 feet (1219 mm).
2. Unbalanced backfill height shall not exceed 3 feet (914 mm).
3. Minimum thickness for plain concrete foundation walls shall be 6 inches (152
mm).
Foundation walls supporting more than 2 feet (1219 mm) of unbalanced backfill or exceeding 3
feet (2438 mm) in height shall be provided with horizontal reinforcement in accordance with
Table R404.1.2(1), and not less than No. 4 (No. 13) vertical bars at a spacing not exceeding 48
inches (1219 mm).
I. Amend the first sentence of CRC Section R506.2.3 to read:
Vapor retarder. A 15 -mil polyethylene or approved equivalent vapor retarder with joints lapped
not less than 6 inches (152 mm) shall be placed between the concrete floor slab and the base
course or the prepared subgrade where no base course exists.
Section 4. Title 16 (Buildings and Construction), Chapter 16.04, Section 16.04.010 is
amended to read as follows:
16.04.010 - California Mechanical Code adopted.
A. That certain document, a copy being on file and open for inspection in the city of Redding permit
center, marked and designated as "California Mechanical Code, 2016 Edition," is adopted as the
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mechanical code of the city and is included in and made a part of this code as though set forth at
length herein.
B. As an amendment to the California Mechanical Code, Sections 104.3.2 and 104.5 and Table
104.5 regarding fees are deleted from this code.
Section S. Title 16 (Buildings and Construction), Chapter 16.05, Section 16.05.010 is
amended to read as follows:
16.05.010 - California Plumbing Code adopted.
A. That certain document, a copy of which is on file in the city of Redding permit center, marked
and designated "California Plumbing Code, 2016 Edition," is adopted as the plumbing code of
the city, and is included in and made a part of this code as though fully set forth at length herein.
B. As an amendment to the California Plumbing Code, Sections 104.3.2 and 104.5 and Table 104.5
regarding fees is are deleted from this code.
Section 6. Title 16 (Buildings and Construction), Chapter 16.06, Section 16.06.010 is
amended to read as follows:
16.06.010 - California Electrical Code adopted.
That certain document, a copy being on file and open for inspection in the city of Redding permit center,
marked and designated "California Electrical Code, 2016 Edition," is adopted as the electrical code of
the city, and is included in and made a part of this code as though set forth at length herein.
Section 7. Title 16 (Buildings and Construction) Chapter 16.07, Section 16.07.010 is amended
to read as follows:
16.07.010 - California Energy Code adopted.
That certain document, a copy being on file and open for inspection in the city of Redding permit center,
marked and designated as "California Energy Code, 2016 Edition," published by the International Code
Council, is adopted as the energy code of the city and is included in and made a part of this code as
though set forth at length herein.
Section 8. Title 16 (Buildings and Construction) Chapter 16.08 (Green Building Code, Section
is amended to read as follows:
16.08.010 - California Green Building Standards Code adopted.
A. That certain document, a copy being on file and open for inspection in the city of Redding permit
center, marked and designated as "California Green Building Standards Code, 2016 Edition," is
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adopted as the green building standards code of the city and is included in and made a part of this
code as though set forth at length herein.
B. Amend Section 4.505.2.1 (1) to read:
A 4 -inch (101.6mm) thick base of '/z inch (12.7mm) or larger clean aggregate shall be provided
with a vapor barrier consisting of 15mil polyethylene sheeting, or an approved equivalent, in
direct contact with concrete and a concrete mix design, which will address bleeding, shrinkage,
and curling, shall be used. For additional information, see American Concrete Institute, ACI
302.2R-06.
Section 9. The passage of this ordinance is not a "project" according to the definition in the
California Environmental Quality Act and therefore is not subject to the provisions requiring
environmental review.
Section 10. Severability. If any section, subsection, sentence, clause or phrase of this
Ordinance is for any reason held by a court of competent jurisdiction to be invalid or unconstitutional,
such decision shall not affect the validity of the remaining portions of the ordinance, the City Council of
the City of Redding hereby declares that it would have passed this ordinance and each section,
subsection, sentence, clause and phrase thereof irrespective of the fact that one or more sections,
subsection, sentence, clause or phrases may be held invalid or unconstitutional.
Section 11. This ordinance shall take effect January 1, 2017, and the City Clerk shall certify
the adoption thereof and cause its publication according to law.
I HEREBY CERTIFY that the foregoing ordinance was introduced and read by the City
Council of the City of Redding at a regular meeting on the 1st day of November, 2016; and was duly
read and adopted at a regular meeting on the 15th day of November, 2016, by the following vote:
AYES: COUNCIL MEMBERS: Cadd, Schreder, Sullivan, Weaver, & McArthur
NOES: COUNCIL MEMBERS: None
ABSENT: COUNCIL MEMBERS: None
ABSTAIN: COUNCIL MEMBERS: None
MI�YMC,�WHUK Mayor
Attest: Form Approved:
Ae
PAMELA MIZE, City Cifirk WVMPTE. beWALT, City Attorney
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