Chapter 15.18
CALIFORNIA GREEN BUILDING STANDARDS CODE
Sections:
15.18.010 Adoption by reference.
15.18.020 Copies on file.
15.18.030 Amendments made in the California Green Building Standards Code.
15.18.010 Adoption by reference.
The California Green Building Standards Code, 2010 Edition, is adopted by reference the same as though fully set forth in this chapter. (Ord. 10-05 § 1).
15.18.020 Copies on file.
One copy of the California Green Building Standards Code as adopted by BMC 15.18.010, and all amendments thereto, shall be kept on file in the building official’s office for inspection by the public. (Ord. 10-05 § 1).
15.18.030 Amendments made in the California Green Building Standards Code.
The California Green Building Standards Code is amended and changed in the following respects:
A. Section 101.3.1 is added to California Green Building Standards Code Section 101.3.1 to read as follows:
The provisions of this code, except 4.504.2 through and including 4.504.5.1, shall be encouraged for residential room additions of 600 square feet or more.
B. Section 101.3.2 is added to the California Green Building Standards Code to read as follows:
When the total cost of a residential construction project exceeds a valuation threshold of 20,000 dollars or more based on the January 2011 “ENR US20 Cities” average construction cost index, the project is encouraged to comply with one or more of the following for the existing dwelling. The item(s) must be specified on the plans prior to permit issuance. The cost of the work is to be at least 2% of the construction cost. The selected item(s) must be complete prior to the final inspection of the permit.
1. Install ceiling insulation to bring thermal resistance value of ceiling insulation to R-30.
Exempt: Those buildings with no attic, or inadequate attic space between roof and ceiling below. Inadequate space is defined as that where the roof slope is less than two and one-half feet in twelve feet, and that there is less than thirty (30) inches of vertical clear height at the roof ridge, measured from the top of the bottom chord of the truss or ceiling joist to the underside of the roof structural members or rafters.
Not Exempt: Houses or units having an attic but no attic access hole. A permanent access hole must be constructed, and R30 or greater insulation installed, including on the access cover.
2. Furnace ducts are sealed at plenum and all joints in air duct system, and ducts insulated to resistance value R3 or greater.
Exempt: Ducts between floors, inside interior walls or otherwise inaccessible without alteration.
3. Replace existing tank or flushometer-type toilets with fixtures designed to comply with the standards referenced in Table 5.303.
4. Low-flow devices installed in all shower fixtures, sink and lavatory faucets designed to comply with the standards referenced in Table 5.303.
5. All exposed hot water pipes insulated to at least a thermal resistance value of R3 in pumped, recirculating domestic forced hot water heating systems.
6. Insulate to at least a thermal resistance of R3 exposed hot and cold water pipes within 5 feet of water heater.
Exempt: Hot water pipes between floors, inside interior walls, or otherwise inaccessible without alteration.
7. Incandescent light bulbs replaced with lamps of at least 25 lumens per watt.
8. Approved weather stripping installed on all exterior doors, including doors to unheated garages, basements, crawl spaces, attics and porches. Weather strip must be permanently affixed; adhesive strip insulation tape does not meet the requirements unless it is screwed or tacked in place every six inches.
9. Approved dampers, doors or other devices to block airflow and reduce heat loss through chimneys.
10. Replace existing windows not affected by the renovation with windows rated with a minimum U-factor of 0.40.
11. Considerations may be made for other energy improvements if approved by the Building Official. Items from the list performed within 6 months of the permit application may also be considered with verification.
(Ord. 11-08 § 1).