The provisions of Section 1404 of IBC are adopted by reference with the following modifications:
1. Revise Section 1404.2 by deleting "approved."
2. Revise Table 1404.2 by deleting the rows for: asbestos cement board, asbestos shingles, lead-coated copper, and lead-coated high-yield copper; and replacing "Steel (approved corrosion resistant)" with "Steel (corrosion resistant)."
3. Revise note d to Table 1404.2 to read:
"d. 16 ounces per square foot for cold-rolled copper, 12 ounces per square foot for copper shingles and high- yield copper."
4. Revise Section 1404.3 by replacing "an approved design" with "a design."
5. Revise Section 1404.3.1, excluding the exceptions, to read:
"1404.3.1 Class I and II vapor retarders.
Class I or II vapor retarders shall be provided on the interior side of frame walls."
6. Revise Table 1404.3.2 by deleting all rows except Zone 5.
7. Revise Section 1404.3.4 to read:
"1404.3.4 Vented cladding.
For the purposes of this section, vented cladding shall include the following:
1. Vinyl, or horizontal aluminum siding applied over a weather-resistive barrier as specified in this chapter.
2. Brick veneer with a clear airspace as specified in this code.
3. Other approved vented claddings."
8. Revise the first sentence of Section 1404.4 to read:
"Flashing, including end dams, shall be installed in such a manner so as to prevent moisture from entering the wall or to redirect that moisture to the exterior."
9. Revise Section 1404.5 to read:
"1404.5 Wood veneers.
Wood veneers on exterior walls of buildings of Type I, II, III and IV construction shall be not less than 1 inch (25 mm) nominal thickness and shall conform to the following:
1. The veneer shall not exceed 40 feet (12 190 mm) in height above grade.
2. The veneer is attached to or furred from a noncombustible backing that is fire-resistance rated as required by other provisions of this code.
3. Where open or spaced wood veneers (without concealed spaces) are used, they shall not project more than 24 inches (610 mm) from the building wall."
10. Revise Section 1404.7 to read:
"1404.7 Anchored stone veneer.
Anchored stone veneer units not exceeding 10 inches (254 mm) in thickness shall be anchored directly to masonry, concrete or to metal stud construction by corrosion-resistant clips or anchors located in the edge or back of the units. Veneer anchors shall be capable of resisting a force equal to two times the weight of the attached veneer in tension and compression."
11. Delete Section 1404.8.
12. Revise Section 1404.9 to read:
"1404.9 Terra cotta.
Terra cotta or ceramic units not less than 1 5/8 inches (41 mm) thick shall be anchored directly to masonry, concrete or metal stud construction. The facing shall be tied to the backing with corrosion-resistant metal anchors. The veneer anchors shall have sufficient strength to support twice the weight of the veneer in tension."
13. Revise Section 1404.10.1.2.1 to read:
"1404.10.1.2.1 Flashing at foundation.
A corrosion-resistant screed or flashing shall be installed to extend below the foundation plate line on exterior stud walls in accordance with Section 1404.4. The water-resistive barrier shall lap over the exterior of the attachment flange of the screed or flashing."
14. Revise Section 1404.10.2 to read:
"1404.10.2 Exterior adhered masonry veneers- porcelain tile.
Adhered porcelain tile units shall not exceed 5/8 inch (15.8 mm) thickness and 24 inches (610 mm) in any face dimension nor more than 3 square feet (0.28 m2) in total face area and shall not weigh more than 9 pounds psf (0.43 kN/m2). Porcelain tile shall be adhered to a backing system."
15. Revise Section 1404.11 to read:
"1404.11 Metal veneers.
Veneers of metal shall be fabricated from corrosion-resistant materials or shall be protected front and back with porcelain enamel, or otherwise be treated to render the metal resistant to corrosion."
16. Revise Section 1404.11.1 to read:
"1404.11.1 Attachment.
Exterior metal veneer shall be securely attached to the supporting masonry or framing members with corrosion- resistant fastenings, metal ties or by other approved devices or methods. Such attachments and their supports shall be designed and constructed to resist the wind loads as specified in Section 1609 for components and cladding."
17. Revise Section 1404.11.2 to read:
"1404.11.2 Weather protection.
Metal supports for exterior metal veneer shall be corrosion-resistant. Wood studs, furring strips or other wood supports for exterior metal veneer shall be pressure-treated wood or protected as required in Section 1402.2. Joints and edges exposed to the weather shall be caulked with durable waterproofing material or by other approved means to prevent penetration of moisture."
18. Delete Section 1404.12.3.
19. Revise Section 1404.12.4.1 to read:
"1404.12.4.1 Installation above sidewalk level.
Where thin exterior structural glass veneer is installed above the level of the top of a bulkhead facing, or at a level more than 36 inches (914 mm) above the sidewalk level, the mastic cement binding shall be supplemented with nonferrous metal shelf angles located in the horizontal joints in every course. Such shelf angles shall be not less than 0.0478-inch (1.2 mm) thick and not less than 2 inches (51 mm) long, with not less than two angles for each glass unit. Shelf angles shall be secured to the wall or backing with expansion bolts, toggle bolts or by other approved methods."
20. Revise Section 1404.12.5 to read:
"1404.12.5 Joints.
Unless otherwise specifically approved by the building official, abutting edges of thin exterior structural glass veneer shall be ground square. Horizontal joints shall be held to not less than 0.063 inch (1.6 mm) by a nonrigid substance or device. Where thin exterior structural glass veneer abuts nonresilient material at sides or top, expansion joints not less than 1/4 inch (6.4 mm) wide shall be provided."
21. Revise Section 1404.12.6 by replacing "sidewalk" with "ground."
22. Revise Section 1404.13.1 to read:
"1404.13.1 Installation.
Windows and doors shall be installed in accordance with manufacturer’s written instructions or an engineering analysis. Fastener size and spacing shall be provided in such instructions and shall be calculated based on maximum loads and spacing used in the test or analysis."
23. Revise Section 1404.14 and its subsections to read:
"1404.14 Vinyl siding.
Vinyl siding conforming to the requirements of this section and complying with ASTM D3679 shall be permitted on exterior walls of buildings where the building height is less than or equal to 45 feet (13 716 mm). Vinyl siding shall be secured to the building so as to provide weather protection for the exterior walls of the building.
1404.14.1 Application.
The siding shall be applied over sheathing or materials listed in Section 2304.6. Siding shall be applied to conform to the water-resistive barrier requirements in Section 1402. Siding and accessories shall be installed in accordance with manufacturer’s written instructions. Unless otherwise specified in the manufacturer’s instructions, nails used to fasten the siding and accessories shall have a minimum 0.313-inch (7.9 mm) head diameter and 1/8-inch (3.18 mm) shank diameter. The nails shall be corrosion resistant and shall be long enough to penetrate the studs or nailing strip not less than 3/4 inch (19 mm). For cold-formed steel light-frame construction, corrosion-resistant fasteners shall be used. Screw fasteners shall penetrate the cold-formed steel framing not fewer than three exposed threads. Other fasteners shall be installed in accordance with the permitted construction documents and manufacturer’s instructions. Where the siding is installed horizontally, the fastener spacing shall not exceed 16 inches (406 mm) horizontally and 12 inches (305 mm) vertically. Where the siding is installed vertically, the fastener spacing shall not exceed 12 inches (305 mm) horizontally and 12 inches (305 mm) vertically."
24. Revise Section 1404.16 to read:
"1404.16 Fiber-cement siding.
Fiber-cement siding complying with Section 1403.10 shall be allowed on exterior walls of Type I, II, III, IV and V construction for wind pressure resistance or wind speed exposures as indicated by the manufacturer’s listing and label and installation instructions. Where specified, the siding shall be installed over sheathing or materials listed in Section 2304.6 and shall be installed to conform to the water-resistive barrier requirements in Section 1402. Siding and accessories shall be installed in accordance with manufacturer’s instructions. Unless otherwise specified in the manufacturer’s instructions, nails used to fasten the siding to wood studs shall be corrosion- resistant round head smooth shank and shall be long enough to penetrate the studs not less than 1 inch (25 mm). For cold-formed steel light-frame construction, corrosion-resistant fasteners shall be used. Screw fasteners shall penetrate the cold-formed steel framing not fewer than three exposed full threads. Other fasteners shall be installed in accordance with the permitted construction documents and manufacturer’s instructions."
25. Revise Sections 1404.16.1 and 1404.16.2 by deleting "approved."
26. Revise Section 1404.17 by deleting "approved."
27. Delete Section 1404.18.
(Amend Coun. J. 2-19-20, p. 14473, Art. II, § 63)