The 2022 California Plumbing Code, California Code of Regulations, Title 24, a portion of the California Building Standards Code, is adopted and incorporated by this reference as the plumbing code except for changes, additions, deletions and amendments in this chapter. The following appendices of the plumbing code are included in the adoption: Appendix H (Private Sewage Disposal Systems) and M (Peak Water Demand Calculator). The following sections, chapters, or appendices are deleted: Sections 103 et seq., 104.3, 104.4, 104.5, 106 et seq. and 107 et seq. of Chapter 1; and Appendices A through G, I through L, and N.
The provisions of this code that are adopted by the city shall
apply to plumbing equipment, systems, materials, or appurtenances
or portions thereof installed, used, designed or intended to be used.
(Ord. CS-437 § 9, 2022)
Section 1505.10 is amended to read as follows:
1505.10 Required Appurtenances.
The recycled water supply system and the potable water system
within the building and the premises shall be provided with the required
appurtenances (e.g., valves, air/vacuum relief valves, etc.).
All new buildings where recycled water will be used for irrigation
shall install on the building supply pipe a bypass tee for recycled
water cross-connection shut down testing. The bypass tee shall be
constructed of copper and the size shall match the building supply
pipe size approved for the building. The bypass tee shall be connected
to the building supply pipe above ground and before the pressure regulator
at a point just before it enters the building. Both end connections
to the building supply pipe shall be made using a union. A bronze
full port straight ball valve with handle shall be installed on the
inlet side of the bypass tee for the building supply pipe and sized
to match the inlet tee. A bronze full port straight ball valve with
tee-head and padlock wing shall be installed on the side inlet tee,
which shall be threaded with a male hose thread adapter to match the
building supply pipe size. The work shall be in conformance with Engineering
Standard Drawing W35. All shut down tests using the bypass tee shall
be conducted with a backflow prevention device to reduce potential
for contamination of the potable water system.
(Ord. CS-437 § 9, 2022)
A rainfall participation rate of 3.7 inches per hour in a 100-year
storm event (one hour duration) shall be utilized as a guideline to
calculate the minimum sizing of roof drainage systems required. Roof
drainage systems shall be permitted to be sized using the roof area
and the slope of the roof area served by each of the drain inlets.
Calculations for the roof drainage system shall be submitted along
with the plan for approval.
(Ord. CS-437 § 9, 2022)
