Except as hereinafter provided, the California Building Code, 2022 Edition, Volumes 1 and 2, with Appendices C, I and J; California Referenced Standards Code, 2022 Edition; and the Gypsum Association Fire Resistance Design Manual, Twenty-First Edition, are hereby adopted by reference; and, together with the California Residential Code, 2022 Edition, with Appendix AH; California Electrical Code, 2022 Edition; California Plumbing Code, 2022 Edition, with Appendix H; California Mechanical Code, 2022 Edition; California Energy Code, 2022 Edition; California Green Building Standards Code, 2022 Edition; California Administrative Code, 2022 Edition; and International Property Maintenance Code, 2021 Edition, each of which is adopted by reference in Chapters 15.10, 15.12, 15.14, 15.16, 15.18, 15.20 and 15.22, respectively, hereinafter in this Title 15, together with certain amendments, deletions, and penalties, are hereby collectively designated as the Building Code of the city of Moorpark. Copies of all of the foregoing Codes and Manual are maintained in the office of the building official of the city of Moorpark and shall be made available for public inspection while this code is in force.
(Ord. 508 § 3, 2022)
Section 202 of the California Building Code is amended by adding a new definition to read as follows:
BUILDING OFFICIAL. The officer or other designated authority, or a duly authorized representative, charged with the administration and enforcement of this Code, except Appendix J. The authority designated to enforce Appendix J shall be the city engineer.
(Ord. 508 § 3, 2022)
A new Section 1808.6.5 is added to the California Building Code to read as follows:
1808.6.5. When buildings are located on expansive soil having an expansion index greater than 50, gutters, downspouts, piping, and/or other non-erosive devices shall be provided to collect and conduct rain water to pervious areas such as yards, open channels, or vegetated areas.
Routing rooftop runoff through yard drains to the roadway or the storm water conveyance system shall not be permitted.
(Ord. 508 § 3, 2022)
Section 1809 of the California Building Code is amended by deleting Table 1809.7. A new Table 1809.7 is added to Section 1809 to read as follows:
Table 1809.7—Foundations for Stud Bearing Walls—Minimum Requirements1,10,11,12
Weighted expansion index
Foundation for slab and raised floor systems 2,5,7
Concrete slabs
Pre-moistening of soils under footings, piers and slabs 5,6
Restrictions on piers under raised floors
No. of stories
Stem Thickness8
Footing width9
Footing thickness
All perimeter footings6
Interior footings for slab and raised floors6
Reinforcement for continuous foundations3,8
3-1/2″ minimum thickness
4″ with E.I. over 51
Depth below natural surface of ground and finish grade
Reinforcement4
Total thickness of sand
Inches
0—20
1
6
12
6
12
12
1-#4
Top and bottom
#4 @ 48″ o.c.
each way
or
#3 @ 36″ o.c.
each way
2″
Moistening of ground prior to placing concrete is recommended
Piers allowed for single floor loads only
Very low
2
6
15
7
18
18
non expansive
3
10
18
8
24
24
21—50
1
6
12
6
15
12
1-#4
Top and bottom
4″
3% over optimum moisture required to a depth of 18″ below lowest adjacent grade. Testing required.
Piers allowed for single floor loads only
Low
2
8
15
7
18
18
3
10
18
8
24
24
51—90
1
6
12
8
21
12
1-#4
Top and bottom
#3 @ 24″ o.c.
each way
4″
3% over optimum moisture required to a depth of 18″ below lowest adjacent grade. Testing required.
Piers not allowed
Medium
2
8
15
8
21
18
3
10
18
8
24
24
#3 bars @ 24″ o.c. each way 12″ into footing, 36″ into slab10
91—130
1
6
12
8
27
12
2-#4
Top and bottom
#3 @ 24″ o.c.
each way
4″
3% over optimum moisture required to a depth of 18″ below lowest adjacent grade. Testing required.
Piers not allowed
High
2
8
15
8
27
18
3
10
18
8
27
24
#3 bars @ 24″ o.c. each way
12″ into footing, 36″ into slab10
Above 130
Very high
Special design by a licensed Architect or Engineer required
Footnotes to Table 1809.7:
1.
Pre-moistening is required where specified in Table CBC 1809.7 in order to achieve maximum and uniform expansion of the soil prior to construction and thus limit structural distress caused by uneven expansion and shrinkage. Other systems, which do not include pre-moistening, may be approved by the building official, when such alternatives are shown to provide equivalent safeguards against the adverse effects of expansive soil.
2.
Under-floor access crawl holes shall be provided with curbs extending not less than six inches above adjacent grade to prevent surface water from entering the foundation area.
3.
Reinforcement for continuous foundations shall be placed not less than three inches above the bottom of the footing and not less than three inches below the top of the stem.
4.
Slab reinforcement shall be placed at mid-depth and continue to within two inches of the exterior face of the exterior face of the exterior footing walls.
5.
Moisture content of soils shall be maintained until foundations and piers are poured and a vapor barrier is installed. Test shall be taken within 24 hours of each slab pour.
6.
Crawl spaces under raised floors need not be pre-moistened except under interior footings. Interior footings which are not enclosed by a continuous perimeter foundation system or equivalent concrete or masonry moisture barrier shall be designed and constructed as specified for perimeter footings in Table CBC 1809.7.
7.
A grade beam not less than 12 inches by 12 inches in cross- sectional area, reinforced as specified for continuous foundations in Table CBC 1809.7, shall be provided at garage door openings.
8.
Foundation stem walls which exceed a height of three times the stem thickness above lowest adjacent grade shall be reinforced in accordance with Sections 18 and 19 in the CBC, or as required by engineering design, whichever is more restrictive.
9.
Footing widths may be reduced upon submittal of calculations by a registered civil or structural engineer or licensed architect but shall be a minimum of 12 inches for one and two-story structures and 15 inches for three-story structures.
10.
Bent reinforcing bar between exterior footing and slab shall be omitted when floor is designed as an independent, "floating" slab.
11.
Fireplace footings shall be reinforced with a horizontal grid located three inches above the bottom of the footing and consisting of not less than # 4 bars at 12 inches on center each way. Vertical chimney reinforcing bars shall be hooked under the grid.
12.
Underground utility conduits shall be installed prior to foundation inspection and shall extend beyond the foundation.
(Ord. 508 § 3, 2022)
Section 202 of the California Building Code is amended by adding new definitions to read as follows:
BARRIER. Barrier is a fence, wall, building wall, or any combination of these that completely surrounds the swimming pool and obstructs access to the swimming pool.
SWIMMING POOL. Any body of water created by artificial means which is designed, intended for use, or used for swimming or immersion purposes, which has a water depth exceeding 18 inches. The term, "pool," includes swimming pools, spas, hot tubs, above-and below-ground, and vinyl-lined pools; pool does not include plumbing fixtures such as bathtubs nor does it apply to man-made lakes, reservoirs, farm ponds, or ponds used primarily for public park purposes, water conservation purposes, irrigation purposes or for the watering of livestock.
(Ord. 508 § 3, 2022)
Section 3109 of the California Building Code is amended by revising Section 3109.1, and adding new Sections 3109.3 through 3109.3.3, to read as follows:
3109.1 General. The design and construction of swimming pools, spas and hot tubs shall comply with this code.
3109.3 Residential swimming pools. Residential swimming pools shall be completely enclosed by a barrier complying with Sections 3109.3.1 through 3109.3.3.
3109.3.1 Barrier height and clearances. The top of the barrier must be at least 60 inches 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 must be two inches 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 must be four inches.
3109.3.1.1 Openings. Openings in the barrier must not allow passage of a 4-inch-diameter sphere.
3109.3.1.2 Solid barrier surfaces. Solid barrier surfaces which do not have openings shall not contain indentations or protrusions except for normal construction tolerances and tooled masonry joints.
3109.3.1.3 Closely spaced horizontal members. Where the barrier is composed of horizontal and vertical members and the distance between the tops of the horizontal members is less than 45 inches, the horizontal members shall be located on the swimming pool side of the fence. Spacing between vertical members shall not be greater than 1 % inches in width. Where there are decorative cutouts within vertical members, spacing with the cutouts shall not be greater than 1 % inches in width.
3109.3.1.4 Widely spaced horizontal members. Where the barrier is composed of horizontal members and the distance between the tops of the horizontal members is 45 inches or more, spacing between vertical members must not be greater than 4 inches. Where there are decorative cutouts within vertical members, spacing must not be greater than 1 % inches in width.
3109.3.1.5 Chain link dimensions. Mesh size for chain link fences must not be greater than 1 % inches in width, unless the fence is provided with slats fastened at the top or bottom that reduce the openings to not more than 1 % in width.
3109.3.1.6 Diagonal members. Where the barrier is composed of diagonal members shall not be greater than 1 % inches.
3109.3.1.7 Gates. Access gates must comply with the requirements of Sections 3109.3.1 through 3109.3.1.6 and must be equipped to accommodate a locking device. Pedestrian access gates must open outward away from the pool and must be self-closing and have a self-latching device. Doors or gates other than pedestrian access gates must have a self-latching device and must be equipped with lockable hardware or padlocks and must remain locked at all times when not in use. Release mechanisms must comply with Sections 1010.1.9 and 1109.13. Where release mechanisms of the self-latching device are located less than 60 inches above grade measured on the side of the barrier that faces away from the swimming pool, the release mechanism must be located on the pool side of the gate at least three inches below the top of the gate and the gate barrier may have no opening greater than one-half inch within 18 inches of the release mechanism.
3109.3.1.8 Dwelling wall as a barrier. Where a wall of a dwelling serves as part of the barrier, two safety devices must be provided in accordance with Section 115922 of the California Health and Safety Code.
3109.3.1.9 Pool structure as barrier. Where an above-ground 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 that meets the requirements of Sections 3109.3.1.1 through 3109.3.1.8. Where the ladder or steps are secured, locked or removed, any opening shall not allow the passage of a 4-inch-diameter sphere.
3109.3.2 Indoor swimming pools. Wall surrounding indoor swimming pools shall not be required to comply with Section 3109.3.1.8. through 3109.3.3.
3109.3.3 Prohibited locations. Barriers shall be located as to prohibit permanent structures, equipment or similar objects from being used to climb the barriers. There shall be a clear zone of not less than 36" between the exterior of the enclosure and any permanent structures or equipment such as pumps, filters and heaters that can be used to climb the enclosure.
(Ord. 508 § 3, 2022)
A new Section 3109.7 is added to the California Building Code to read as follows:
3109.7 Pool design and construction.
3109.7.1 General. Pool design and construction shall be in accordance with accepted engineering practice, shall be in conformity with applicable provisions of the adopted building, electrical, plumbing, and mechanical codes, and shall be structurally suitable for the soil, topographic, and geologic conditions prevailing at the construction site.
3109.7.2 Expansive soil design. Pools constructed at grade shall be designed on the assumption that their construction is to be in an area of moderately expansive soil having an expansion index of 51-90 and an equivalent fluid pressure of not less than 45 pounds per cubic foot (p.c.f.). Exception: Where tests indicate that soils at a pool site are non-expansive or have low expansion characteristics from the ground surface to the full depth of the pool, structural design may be based on an equivalent fluid pressures not less than 30 p.c.f.
In highly expansive soils having an expansion index of 91-130, pools shall be designed for not less than 60 p.c.f. equivalent fluid pressure. In very highly expansive soils having an expansion index over 130, pool design shall be subject to special requirements based on a site investigation, soil testing, and engineering analysis by a registered civil engineer to determine appropriate design parameters for the site.
3109.7.3 Hydrostatic uplift. In areas of anticipated high-water table, an approved hydrostatic relief system or device shall be installed.
3109.7.4 Thermal protection for plastic piping. Between the inlet of pool water heating equipment and any plastic water piping connected thereto, a check valve shall be installed to prevent thermal damage to such piping due to backflow. Exception: When rapid or high-rate filters are employed, a check valve may be omitted.
Between the outlet of pool heating equipment and any plastic water piping connected thereto, not less than 5 feet of approved metal pipe shall be installed for the purpose of dissipating heat.
3109.7.5 Safeguarding suction drains. Bottom drains and suction intakes in pools and spas shall be covered with grated or other protective devices which cannot be removed except with tools. The slots or openings in these covers shall be of such area, shape, and arrangement as to prevent bathers from being drawn thereto with such force as to constitute a safety hazard.
3109.7.6 Grab bars. Wherever egress from a pool by bathers is restricted by the presence of a vertical wall or other barrier which extends more than 12 inches above the water at the pool's edge, permanent handrail, grab bars, or equivalent device(s) shall be installed within 12 inches of the water surface, capable of being securely grasped and adequate to support the weight of a user of the pool.
3109.7.7 Decks
3109.7.7.1 General. A deck shall be provided around below-grade swimming pools except when special engineering design is furnished which indicates that such deck is not necessary for the purpose of maintaining the structural integrity of the pool and/or for controlling surface water and moisture content in the soil adjacent to the pool. Decks shall not be required for spas and hot tubs.
3109.7.7.2 Deck design and construction. Required decks shall be constructed of concrete or other approved impervious material and shall be sloped to provide positive drainage away from the perimeter of the pool. Except as provided below, decks shall have a minimum width of 4 feet and shall be at least 3-1/2 inches in thickness. Reinforcement shall be #3 bars spaced not over 24 inches on center each way, or equivalent reinforcing.
Approved joints shall be provided in the deck at corners, at maximum 10-foot intervals, and wherever necessary in order to control cracking, to allow for differential movement and to minimize damage to the deck from such movement should it occur. Joints in decks and coping shall be made watertight with an approved permanent resilient sealant.
3109.7.7.3 Cutoff walls. At the outer perimeter of pool decks a cutoff wall of approved material shall be installed below-grade to a depth of at least 15 inches so as to form a permanent and effective vertical moisture barrier.
Exception:
1.
A cutoff wall may be omitted when a deck at least 6 feet wide is installed.
2.
Decks less than 4 feet in width may be installed provided that the required cutoff wall is increased in depth beyond the minimum by an amount directly proportional to the reduction in deck width.
3109.7.7.4 Pre-saturation, highly expansive soils. When the soil below a deck has an expansion index of 91 or greater it shall be saturated with water to a depth of at least 18 inches prior to installation of the deck.
3109.7.7.5 Surface Water. Surface water from pool decks shall be collected and conducted through nonerosive devices to a street, storm drain, or other approved watercourse or disposal area.
3109.7.7.6 Wastewater. Pool waste shall be disposed of in accordance with the requirements of the Health Officer.
3109.7.7.7 Drywells. Drywells shall not be employed for pool wastewater disposal except when specifically approved for the purpose and when it has been determined that such installation is not likely to have adverse effects on the structural stability of the pool or other structures on the site. The building official may require a percolation test, soils report, and/or geological report to make such a determination.
3109.7.7.8 Special inspection. Special inspection as required by Section 1705.3.9 of the CBC shall be provided for pneumatically placed concrete (Shotcrete) in swimming pools.
(Ord. 508 § 3, 2022)