C. Amend by omitting Table C402.2 OPAQUE THERMAL ENVELOPE REQUIREMENTS of the IECC, and amend by adding in lieu thereof a new Table C402.2 OPAQUE THERMAL ENVELOPE REQUIREMENTS, which reads:
a. Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A.
b Where using R-value compliance method, a thermal spacer block shall be provided, otherwise use the U-factor compliance method in Table C402.1.2.
d Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs.
D. Amend by omitting Section C402.3 Fenestration (prescriptive)., of the IECC, in its entirety, and amend by adding a new Section C402.3 Fenestration (prescriptive)., which reads:
C402.3 Fenestration (prescriptive). Fenestration shall comply with Table C402.3. Automatic
day-lighting controls specified by this Section shall comply with Section C405.2.2.3.2.
C402.3.1 Maximum area. The vertical fenestration area (not including opaque doors and opaque spandrel panels) shall not exceed forty percent (40%) of the gross abovegrade wall area. The skylight area shall not exceed three percent (3%) of the gross roof area.
C402.3.2 Increased skylight area with daylighting controls. The skylight area shall be
permitted to be a maximum of five percent (5%) of the roof area provided automatic daylighting controls are installed in daylight zones under skylights.
E. Amend by omitting Section C406 ADDITIONAL EFFICIENCY PACKAGE OPTIONS, of the IECC, in its entirety.
F. Amend by omitting Section C408 SYSTEM COMMISSIONING, of the IECC, in its entirety.
G. Amend by omitting Exceptions 3., 4., 5., 6., 7., and 8. of Section R101.4.3 Additions, alterations, renovations or repairs., of the IECC.
H. Amend by omitting Section R103 CONSTRUCTION DOCUMENTS of the IECC, in its entirety.
I. Amend by omitting Section R401.2 Compliance., of the IECC, and amend by adding in lieu thereof a new Section R401.2 Compliance., which reads:
R401.2 Compliance. Projects shall comply with Sections identified as mandatory and with either sections identified as “prescriptive”, the HERS Index rating option, or the performance approach in Section R405. The permit applicant of record must elect which compliance path will be followed at the time permit application is made.
The HERS Index rating option can be met by hiring a HERS rater and constructing a residence that scores 100 or less on the HERS Index. Two years from the effective date of the adopting ordinance, the minimum compliant HERS Index score will be 85. A Preliminary HERS Certificate with 'Draft' watermark or a copy of a REM/Rate compliance report with 'Draft' watermark must be submitted with building permit plans. The “Draft” HERS certificate or report shall identify the project address, and include the HERS raters name and contact information.
All HERS ratings shall be performed by a rater accredited by the Residential Energy Services Network (RESNET). The HERS rater is required to perform a blower door test, duct blaster test, pre-drywall inspection and final inspection as part of the standard HERS Index rating process. The final HERS Index score must be posted on the Certificate required by Section R401.3.The final HERS Certificate which indicates that the dwelling unit achieved a compliant HERS Index score must be submitted to the city before issuance of a Certificate of Occupancy. The final HERS certificate shall identify the project address, and include the HERS raters name and contact information.
J. Amend by omitting Table R402.1.1 INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT of the IECC, and amend by adding in lieu thereof a new Table R402.1.1 INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT, which reads:
Table R402.1.1 INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa
R402.4.1.2 Testing. The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 air changes per hour. Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals). Where required by the Building Official, testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the Building Official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weather stripping or other infiltration control measures:
2. Dampers including exhaust, intake, makeup, air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures;
3. Interior doors, if installed at the time of the test, shall be open;
4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
5. Heating and cooling systems, if installed at the time of the test shall be turned off; and
6, Supply and return registers, if installed at the time of the test, shall be fully open.
L. Amend by omitting Section R403.2.2 Sealing (Mandatory)., of the IECC, and amend by adding in lieu thereof a new Section R403.2.2 Sealing (Mandatory)., which reads:
R403.2.2 Sealing (Mandatory). Ducts, air handlers, and filter boxes shall be sealed. Joints and seams shall comply with Section M1601.4.1 of this code.
1. Air-impermeable spray foam products shall be permitted to be applied without additional joint seals.
2. Where a duct connection is made that is partially inaccessible, three screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect.
3. Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressures less than two inches (2”) of water column (500 Pa) pressure classification shall not require additional closure systems.
Where required by the Code Official, duct tightness shall be verified by either of the following:
1. Post construction test: Total leakage shall be less than or equal to 4 cfm (113.3L/min) per 100 square feet (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the entire system, including 44 the manufacturer’s air handler enclosure. All register boots shall be taped or otherwise sealed during the test.
2. Rough-in test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 ft2 square feet (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the system, including the manufacturer’s air handler enclosure. All registers shall be taped or otherwise sealed during the test. If the air handler is not installed at the time of the test, total leakage shall be less than or equal to 3 cfm (85 L/min) per 100 square feet (9.29m2) of conditioned floor area.
1. The total leakage test is not required for ducts and air handlers located entirely within the building thermal envelope.
2. On the post construction test, it is permissible to test for “leakage to the outdoors” versus a “total leakage.” Leakage to the outdoors shall be less than or equal to 8 cfm per 100 square feet of conditioned floor area.
M. Amend by omitting Section R403.4 Service hot water systems., of the IECC, and amend by adding in lieu thereof a new Section R403.4 Service hot water systems., which reads:
R403.4 Service hot water systems. Energy conservation measures for service hot water systems shall be in accordance with Section R403.4.1.
R403.4.1 Circulating hot water systems (mandatory). Circulating hot water systems shall be provided with an automatic or readily accessible manual switch that can turn off the hot-water circulating pump when the system is not in use.
N. Amend by omitting Section R404 ELECTRICAL POWER AND LIGHTING SYSTEMS (MANDATORY), of the IECC, in its entirety.
(Ord. 2904, 2008)
(Ord. 3048, 2012 )