Section 141.1 — California Energy Code (Title 24, Part 6)

REQUIREMENTS FOR COVERED PROCESSES IN ADDITIONS, ALTERATIONS TO EXISTING NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL BUILDINGS

Covered processes in additions or alterations to existing buildings that will be nonresidential, high-rise residential, and hotel/motel occupancies shall comply with the applicable subsections of Section 120.6 and 140.9.

Lab and Process Facility Exhaust Systems. All newly installed fan systems for a laboratory or process facility exhaust system greater than 10,000 CFM shall meet the requirements of Section 140.9(c).

NOTE: For alterations that change the occupancy classification of the building, the requirements of Section 141.1 apply to the occupancy that will exist after the alterations.

Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.8, and 25943, Public Resources Code.

138 2019 CALIFORNIA ENERGY CODE

Copyright © 2019 ICC. ALL RIGHTS RESERVED. Accessed by Kevin Day (kevin.day@dgs.ca.gov), (California Building Standards Commission) Order Number #100735044 on Jul 24, 2019 03:54 PM (PDT) pursuant to License Agreement with ICC. No further reproduction or distribution authorized. Single user only, copying and networking prohibited. ANY UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT, AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.

100735044

SUBCHAPTER 7

LOW-RISE RESIDENTIAL BUILDINGS— MANDATORY FEATURES AND DEVICES

insulated between framing members with insulation having an installed thermal resistance of R-11 or greater.

2 × 6 inch or greater framing shall have an overall assembly U -factor not exceeding U-0.071.
Opaque nonframed assemblies shall have an overall assembly U -factor not exceeding U-0.102.
Bay or bow window roofs and floors shall be insulated to meet the wall insulation requirements of Table 150.1-A or B.
Masonry walls shall be insulated to meet the wall insulation requirements of Table 150.1-A or B.
In wood framed assemblies, compliance with U-factors may be demonstrated by installing wall insulation with an R-value of 13 in 2x4 assemblies, and 20 in 2x6 assemblies.

(d) Raised-floor insulation. Raised floors separating conditioned space from unconditioned space or ambient air shall have an overall assembly U -factor not exceeding U-0.037. In a wood framed assembly, compliance with the U-factor may be demonstrated by installing insulation with an R -value of 19 or greater.

Exception to Section 150.0(d): A building with a controlled ventilation or unvented crawlspace may omit raised floor insulation if all of the following are met:

i. The foundation walls are insulated to meet the

wall insulation minimums as shown in Table 150.1-A or B; and

ii. A Class I or Class II vapor retarder is placed over

the entire floor of the crawl space; and

iii. Vents between the crawlspace and outside air are

fitted with automatically operated louvers that are temperature actuated; and

iv. The requirements in Reference Residential

Appendix RA4.5.1.

(e) Installation of fireplaces, decorative gas appliances and gas logs. If a masonry or factory-built fireplace is installed, it shall comply with Section 110.5, Section 4.503 of Part 11, and shall have the following:

Closable metal or glass doors covering the entire opening of the firebox; and
A combustion air intake to draw air from the outside of the building, which is at least 6 square inches in area and is equipped with a readily accessible, operable and tight-fitting damper or combustion-air control device; and

Exception to Section 150.0(e)1B: An outside combustion-air intake is not required if the fireplace will