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HomeMy WebLinkAboutOrdinance - 2401 - Amend Title 16 . . J 'I ORDINANCE NO. 2401 AN ORDINANCE OF THE CITY OF REDDING AMENDING REDDING MUNICIPAL CODE CHAPTER 16.01 (BUILDING OFFICIAL PERMITS) BY REPEALING SECTION 16.01.020 AND AMENDING AND RENUMBERING SECTIONS 16.01.030 THROUGH 16.01.060; CHAPTER 16.02 (BUILDING CODE) BY AMENDING SECTION 16.02.010; CHAPTER 16.03 (MECHANICAL CODE) BY AMENDING SECTION 16.03.010; CHAPTER 16.04 (PLUMBING CODE) BY AMENDING SECTION 16.04.010; AND CHAPTER 16.05 (ELECTRIC CODE) BY AMENDING SECTION 16.05.010 AND MAKING FINDINGS OF FACTS RELATING TO LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHIC CONDITIONS, ALL RELATING TO THE ADOPTION OF THE CALIFORNIA BUILDING STANDARDS CODE THE CITY COUNCIL OF THE CITY OF REDDING DOES ORDAIN AS FOLLOWS: Section 1. Findings offact and needfor changes or modifications to the 2007 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 2006 edition of the international Building Code, the 2006 edition of the Uniform Plumbing and Mechanical Codes, and the 2005 National Electric Code and the 2007 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 2007 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: I. Climatic. 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 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 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 -c: D --..... . . , ri 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 th ough September having temperature ranges between 95 and liS 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 2007 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. Soils 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 is being constructed in the hilly areas on the west and northeast of the City of Redding. The majority of the hills in these areas have sloping ranges from 15 to 30 percent. The steeper slopes, west and north of the City, are plauned 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 l6%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 of6% 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). 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. Page 2 . . 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: . Climatic, geologic, and topographical conditions necessitate the control of moisture migration into buildings. . Geologic conditions necessitate proper design for seismic accelerations. . 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 th~ 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 1403.7 1608 1908.1.17 1614.1 1613.5.6 1613.5.6.1 2308.8.5 2308.9.3 la, 2a, 2b la 2c 2c 2c 2c la 2c Section 2. Chapter 16.01 (Building Official- Permits) oftke Redding Municipal Code is amended to read asfollows: A. Delete Section 16.01.020, adopting the 1997 Edition of the Uniform Administrative Code. B. Renumber Sections 16.01.030 to 16.01.020, 16.01.040 to 16.01.030, 16.01.050 to 16.01.040, and 16.01.060 to 16.01.050. Section 3. Chapter 16.02 (Building Code) o/the Redding Municipal Code is amended to read as/ollows: 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), 2007 Edition, Volumes I and 2," published by the International Code Council, including Appendix Chapter I. Page 3 . . i B. Delete CBC Section 1402.6 and add CBC Section 1403.7 as follows: 1403.7 Vapor Barrier. A vapor barrier consisting of 2" of clean sand over a layer of polyethylene sheeting over 4" of free draining 3/4" gravel or crushed rock, or an approved alternate, shall be installed under all residential concrete slab floors. Exceptions: I. Accessory buildings not used for human occupancy. 2. In situations where a floor covering is provided above an existing concrete slab as part of a conversion, the vapor barrier may be installed on top of the slab. C. Snow load CBC Section 1608 is replaced by the following: 1608.1 General. Design snow loads shall be determined by the Building Official. D. Modify the text of ACI 318 by adding CBC Section 1908.1.17 as follows: 1908.1.17 ACI 318, Section 14.8. Modify ACT 318 Section 14.8.3 and 13.8.4 in accordance with 2007 Los Angeles Area Regional Uniform Code Program ( LARUCP) recommendation 19-01 per the August 24,2007, recommended amendments to the 2007 California Building Code. E. Modify text of ASCE 7-05 by adding CBC Section 1614.1 as follows: 1614.1 ASCE 7, Section 12.12.3. Replace ASCE7 Section 12.12.3 in accordance with LARUCP recommendation 16-10 per the August 24, 2007, recommended amendments to the 2007 California Building Code. F. Add the following exception to CBC Section 1613.5.6: Exception: Structures not assigned to Seismic Design Category E or F above shall be assigned to Seismic Design Category D. G. Add the following exception to CBC Section 1613.5 .6.1 Exception: Seismic Design Category shall be determined per exception to Section 1613.5.6. H. Amend CBC Section 2308.8.5 to read: Floor, attic, and roof framing shall be laterally supported in accordance with AF & PA NDS Section 4.4.1.2. I. Amend CBC Section 2308.9.3 item #4 to read: 4. Fiberboard sheathing panels not less than Y:z inch (12.7 mm) thick and not less than 4' x 8' (1219 mm x 2438 mm) in size, except at boundaries and changes in framing, applied vertically or horizontally on studs spaced not more than 16 inches (406 mm) o.c., with all edges blocked. Fasteners shall be in accordance with Section 2306.4.4 and Table 2306.4.4. J. Amend CBC Sections 31 09.2,3109.3,3109.4,3109.4.1,3109.4.1.7,3109.4.1.9, and 3 109.4.4.2 to read: Page 4 . . . i . 3109.2 Definition. The following word and term shall, for the purposes of this section and as 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 (457mm) 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 (I 524mm) in height or a screen enclosure. Openings in the fence shall not permit the passage of a 4-inch diameter (l02mm) 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 comply 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 31094.1.8. The top ofthe barrier shall be at least 60 inches (I 524mm) 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 (5Imm) 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 (l02mm). 3109.4.1.7 Gates. Access gates shall comply with the requirements of Section 3109.4.1.1 through 31 09.4.1.6 and shall be equipped to accommodate a locking device. Pedestrian-access gates shall open outward away from the pool and shall be self-closing and have a self-latching device. Pedestrian-access gates shall not be wider than 4 feet. Gates other than pedestrian access 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 gate. Electrically powered vehicle-access gates are not permitted as a part of the barrier. Where the release mechanism of the self-latching device is located less than 54 inches (1372 mm) from the bottom of the gate, the release mechanism shall be located on the pool side of the gate at least 3 inches (76mm) below the top of the gate, and the gate and barrier shall have no opening greater than .5 inch (l2.7mm) within 18 inches (457mm) 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 (I 02mm) 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. Page 5 . . . ( 3109.4.4.2 Construction permit; safety features required. Whenever a construction permit is issued for construction of a new swimming pool not regulated in Chapter 3IB 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: I. 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 I, 1998. Section 4. Chapter 16.03 (Mechanical Code) of the Redding Municipal Code is amended to read asfollows: 16.03.010 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, 2007 Edition," published by the International Association of Plumbing and Mechanical Officials, is adopted as the mechanical code ofthe City and is included in and made a part of this code as though set forth at length herein. Section 5. Chapter 16.04 (Plumbing Code) of the Redding Municipal Code is amended to read as follows: 16.04.010 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, 2007 Edition," published by the International Association of Plumbing and Mechanical Officials 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. Page 6 . . . Section 6. follows: 16.05.010 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, 2007 Edition," published by the National Fire Protection Association is adopted as the electrical code ofthe City, and is included in and made a part of this code as though set forth at length herein. (Ord. 2246 S 2 (part), 1999) Chapter 16.05 (Electric Code) of the Redding Municipal Code is amended to read as 16.05.020 Service disconnection. The City may disconnect an electric meter and cease the service to an electrical consumer whenever the Fire Marshal of the City or the City Building Official determines that the structure being served constitutes a serious fire hazard, or public health hazard, or is otherwise dangerous for human occupancy. (Ord. 2246 S 2 (part), 1999) Section 7. 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 8. This ordinance shall take effect January 1,2008, and the City Clerk shall certifY the adoption thereof and cause its publication according to law. I HEREBY CERTIFY that this ordinance was introduced and read by the City Council at a regular meeting on the 6th day of Novernber, 2007, and was read and adopted at a regular meeting on the 4th day of Decernber, 2007, by the following vote: AYES: NOES: ABSENT: ABSTAIN: COUNCIL MEMBERS: COUNCIL MEMBERS: COUNCIL MEMBERS: COUNCIL MEMBERS: Bosetti, Dickerson, Jones, Murray, and Stegall None None None Ii'" JJ,J!, ~ aJQ ayor Attest: ., C; J ',' ;.- ./ . i _ ~ v ' ~_ ,.,' 1)\ r"" r ~'t, "0(>'" . <~~. '" . -~... I~ ~--' Form Approved: CONNIE STRO~Y ,"', '.-.,.;.,. '> -';~ ..- l~ ." . <: .. - ". .:'''' . '!, \ - """"l'-~J _ _ ~ '" .; ~~ \, ~ , ~\. I \" ., .\ ty Clerk ~~~ RICHARD A. DUVERN , City Attorney Page 7 "