Honolulu adopts the Hawaii State Residential Code with local changes

The Hawaii State Residential Code, as adopted by the State of Hawaii on November 17, 2020, which adopts, with modifications, the International Residential Code for One- and Two-Family Dwellings, 2018 Edition (IRC), published by the International Code Council, Inc., 500 New Jersey Avenue, NW, 6th Floor Washington, DC 20001, is adopted by reference and made a part hereof, subject to the following amendments: (1) Amending Section R101. Section R101.1 is amended and Section R101.2 is added to read: R101.1 Title. These provisions shall be part of the Building Code of the City and County of Honolulu, and shall be referred to herein as “the Residential Code.” R101.2 Scope. The provisions of the International Residential Code for One- and Two-Family Dwellings shall be permitted as an alternative to the International Building Code to apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal, and demolition of detached one- and two-family dwellings not more than three stories in height, multiple single-family dwellings (townhouses) not more than two stories in height with a separate means of egress, and their accessory structures. A townhouse is a single-family dwelling unit constructed in a group of three or more attached units in which each unit extends from the foundation to roof and with open space on at least two sides. For patio covers, the provisions of Appendix H are made a part of the Residential Code. For R-3 one-and two-family dwellings used as care homes, the provisions of Appendix M are made a part of the Residential Code. (2) Amending Section R102.4. Sections R102.4.1.through Section 102.4.1.7 are amended and Section 102.4.1.8 is added to read: R102.4.1.1 Plumbing Code. Wherever the term International Plumbing Code is used in this code, it shall mean ROH Chapter 19, Plumbing Code. R102.4.1.2 Fire Code. Whenever the term International Fire Code is used in this code, it shall mean ROH Chapter 20, Fire Code. R102.4.1.3 International Energy Conservation Code. Whenever the term International Energy Conservation Code is used in this code, it shall mean ROH Chapter 168, Building Energy Conservation Code. R102.4.1.4 International Fuel Gas Code. Whenever the term International Fuel Gas Code is used in this code, it shall mean ROH Chapter 19, Plumbing Code. R102.4.1.5 International Building Code. Whenever the term International Building Code is used in this code, it shall mean ROH Chapter 16, Building Code. R102.4.1.6 Electrical Code. The provisions of ROH Chapter 17, Electrical Code shall apply. R102.4.1.7. Other referenced codes not listed in Section 102.4.1 are considered referenced guidelines and not mandatory. R102.4.1.8 Housing Code. The provisions of ROH Chapter 16A, Housing Code shall apply. (3) Adding Section R103 and amending Section R103.1. Section R103 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code, except Section R103.1, which is amended to read: R103.1 General. Code enforcement agency shall be in accordance with Section 103 of the International Building Code, specifically ROH Section 16-1.1, Amendment (5). (3a) Adding Section R104. Section R104 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code. (4) Adding Section R105. Section R105 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code, except Section R105.1, which is amended to read: R105.1 Required. A building permit is required to perform work covered by this code as provided in ROH Chapter 18. (5) Amending Subsection R105.8. Subsection R105.8 of the International Residential Code, 2018 Edition, is amended to read: R105.8 Responsibility. It shall be the duty of every person who performs work for the installation, alteration, or repair of building, structure, electrical, gas, mechanical or plumbing systems, for which this code is applicable, to comply with this code. (6) Adding Section R106. Section R106 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code, except Section R106.1, which is amended to read: R106.1 Submittal documents. See ROH Chapter 18. In addition to the requirements of the plot plan required in ROH Chapter 18, the construction documents submitted with the application for permit shall be accompanied by a site plan showing to scale the size and location of new construction and existing structures on the site plan showing to scale the size of and location of the new construction and distances from lot lines. In the case of demolition, the site plans shall show construction to be demolished and the location and size of existing structures and construction that are to remain on the site or plot. (7) Adding Section R106.1.4. A new Section R106.1.4 is added to read: R106.1.4 Information for construction in flood hazard areas. For buildings and structures in flood hazard areas as established by ROH Chapter 21A, construction documents will include: (a) Delineation of flood hazard areas, floodway boundaries and flood zones, and the design flood elevation, as appropriate; (b) The elevation of the proposed lowest floor, including basement; in areas of shallow flooding (AO zones), the height of the proposed lowest floor, including basement, above the highest adjacent grade; (c) The elevation of the bottom of the lowest horizontal structural member in coastal high hazard areas (V Zone); and (d) If design flood elevations are not included on the community’s Flood Insurance Rate Map (FIRM), the applicant shall submit to the building official a flood study, flood data, and other pertinent information prepared by a licensed design professional, as required by ROH Chapter 21A. (8) Adding Section R106.1.5. A new Section R106.1.5 is added to read: R106.1.5 Topographic survey. For new or additions to structures and buildings, on properties where the elevation difference on that site is 5 feet (1,524 mm) or more, there shall be provided a topographic survey of the existing site. (9) Adding Sections R106.1.6 through R106.1.6.2. New Sections R106.1.6 through R106.1.6.2 are added to read: R106.1.6 Stormwater management. Stormwater management systems for residential uses include, but not limited to, reducing the total runoff generated on the site by reducing the total impervious surface area of the lot and implementing source control BMP and good housekeeping practices. R106.1.6.1 Increased runoff. Maximum impervious surface. The impervious surface area for construction of one-family or two-family detached dwelling or duplex shall be in accordance with ROH Chapter 21, Land Use Ordinance. R106.1.6.2 Residential Stormwater Management Plan or RSWMP. A RSWMP shall be prepared for building permit applications for Single-Family Dwelling, Two-Family Dwelling, and duplex projects resulting in an increase or decrease of total impervious surface area or replacing existing impervious surface area. All the existing and proposed impervious and permeable surfaces areas shall be reflected on the Site or Plot Plan, drawn to scale. (10) Deleting Section R108. Section R108 is deleted in its entirety. (11) Adding Section R109. Section R109 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code, except that Sections R109.1, R109.1.1, R109.1.3, R109.1.5, R109.1.5.1 and R109.1.6 are amended and R109.5 through R109.9 are added to read: R109.1 Types of Inspections. Inspections and lot survey shall be in accordance with the International Building Code Section B110. R109.1.1 Required inspections. The building official , upon notification from the permit holder or the permit holder’s agent, shall make the following inspections and shall either approve that portion of the construction as completed or shall notify the permit holder or the permit holder’s agent if the same fails to comply with this code. R109.1.3 Floodplain inspections. For construction in areas prone to flooding as established by ROH Chapter 21A, upon placement of the lowest floor, including basement, and prior to further vertical construction, the building official shall require submission of documentation, prepared and sealed by a land surveyor, licensed in the State of Hawaii, of the elevation of the lowest floor, including basement, required in Section R106, for the following two stages of construction: (a) Upon placement of the lowest floor, including basement, and prior to further vertical construction; and (b) Upon completion of the structure. R109.1.5 Other inspections. In addition to the inspections specified in Sections R109.1.3 through R109.1.6 of this code, the building official is authorized to make or require other inspections of any construction work to ascertain compliance with the provisions of this code and other laws that are enforced by this code. R109.1.5.1 Fire-resistance-rated construction inspection. When fire-resistance-rated construction is required between dwelling units or due to locate on property, an inspection of such construction, after all lathing and/or wallboard is in place, but before any plaster is applied, or before wallboard joints and fasteners are taped and finished. R109.1.6 Final inspections. Final inspections shall be made after the permitted work is complete and prior to final occupancy. R109.5 Special inspections. Where application is made for construction as described in this section, the owner shall employ one or more special inspectors independent of the contractors performing the work, to provide inspections during construction on the types of work listed under Sections R109.5.1 and R109.5.6 of this code. These inspections are in addition to the inspections specified in Section R109 of this code. The special inspector shall be a qualified person who shall demonstrate competence, to the satisfaction of the building official , for inspection of the particular type of construction or operation requiring special inspection. The building official may impose reasonable fees to cover the cost to conduct examination in licensing of special inspectors and issuance of registration cards. Exceptions: 1. The building official may waive the requirements for the employment of a special inspector if the construction is of a minor nature. 2. The employment of a special inspector is not required for construction work for any government agency that provides for its own inspections. 3. Special inspections are not required for building components unless the design involves the practice of professional engineering or architecture as defined by HRS 464. R109.5.1 Special inspections for wind requirements. Special inspections are required for buildings and structures constructed where the 3-second-gust effective ultimate design wind speed is 140 mph or greater. R109.5.1.1 Structural wood. Continuous special inspection is required during field gluing operations of elements of the main windforce-resisting system. Periodic special inspection is required for nailing, bolting, anchoring, and other fastening of components within the main windforce-resisting system, including wood shear walls, wood diaphragms, drag struts, braces, and hold-downs. Exception: Special inspection is not required for wood shear walls, shear panels, and diaphragms, including nailing, bolting, anchoring, and other fastening to other components, of the main windforce-resisting system, where the fastener spacing of the sheathing is more than 4 inches (102 mm) on center. R109.5.1.2 Cold-formed steel light-frame construction. Periodic special inspection is required during welding operations of elements of the main windforce-resisting system. Periodic special inspection is required for screw attachment, bolting, anchoring and other fastening of components within the main windforce-resisting system, including shear walls, braces, diaphragms, collectors (drag struts) and hold-downs. Exceptions: A special inspection is not required for cold-formed steel light-frame shear walls, braces, diaphragms, collectors (drag struts) and hold-downs where either of the following apply: 1. The sheathing is gypsum board of fiberboard. 2. The sheathing is wood structural panel or steel sheets on only one side of the shear wall, shear panel or diaphragm assembly and the fastener spacing of the sheathing is more than 4 inches (102 mm) on center. R109.5.1.3 Wind-resisting components. Periodic special inspection is required for the following systems and components: (a) Roof cladding. (b) Wall cladding. R109.5.2 Termite protection. Special inspections are required for termite barrier, treated structural lumber, and pipe penetrations for new wood frame residential buildings. R109.5.3 Automatic fire protection systems. Automatic fire sprinkler systems shall be inspected and evaluated in accordance to the requirements of NFPA 13, NFPA 13D, and NFPA 13R respectively. R109.5.4 Concrete construction. The special inspections and verifications for concrete construction inspected in accordance with ACI 318. Exceptions: Special inspections shall not be required for: 1. Foundation concrete for structures permitted to be designed under the International Residential Code. 2. Concrete footings supporting buildings three stories or less in height that are fully supported on earth or rock where the structural design is based on a specified compressive strength fc no greater than 2,500 pounds per square inch (psi) (17.2 MPa), regardless of the compressive strength specified in the construction documents or used in the footing construction. Periodic inspection of the reinforcing for all concrete footings shall be required. 3. Nonstructural concrete slabs supported directly on the ground, including pre-stressed slabs on grade, where the effective pre-stress in the concrete is less than 150 psi (1.03 MPa). 4. Concrete foundation walls constructed in accordance with Tables B1807.1.6.2, B1807.1.6.3(1), B1807.1.6.3(2), B1807.1.6.3(3), or B1807.1.6.3(4). 5. Concrete patios, driveways, and sidewalks on grade. R109.5.5 Floodplain construction. See ROH Chapter 21A. R109.6 Building permit requirement. Where special inspection or testing is required by Section R109.5, the construction drawings shall include a complete list of special inspections required by this section. R109.7 Statement of special inspections. The applicant shall submit a statement of special inspections as a condition for permit issuance. R109.8 Contractor responsibility. When special inspection is required, a contractor’s statement shall be submitted containing an acknowledgement of awareness of the special inspection requirements contained on the drawings and that the construction requiring special inspections shall be made accessible for inspections. R109.9 Report requirement. The licensed engineer or architect of record shall submit a final signed report stating that they have received all the special inspection reports and documenting that there are no known unresolved code requirements that create significant public safety deficiencies. (12) Adding Section R110.1. Section R110 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code. Section R110.1 is amended to read: R110.1 Use and occupancy. No new building or structure shall be used or occupied, and no change in the existing occupancy classification of a building or structure or portion thereof shall be made until the building official has issued a certificate of occupancy therefor as provided herein. Issuance of a certificate of occupancy shall not be construed as approval of a violation of the provisions of this code or other ordinances of the jurisdiction. Exceptions: 1. Certificates of occupancy are not required for work exempt from permits in ROH Chapter 18. 2. Accessory buildings or structures. (13) Amending Section R110.2. Section R110.2 of the International Residential Code, 2018 Edition, is amended to read: R110.2 Change in use. Changes in the occupancy classification of an existing structure shall not be made except as specified by this code. (14) Amending Section R110.3. Section R110.3 of the International Residential Code, 2018 Edition, is amended to read: R110.3 Certificate issued. After the building official inspects the building or structure and finds no violations of the provisions of this code or other laws that are enforced by the department, the building official shall issue a certificate of occupancy which shall contain the following: (a) The building permit number. (b) The address of the structure. (c) The name and address of the owner. (d) A description of the structure or portion thereof for which the certificate is issued. (e) A statement that the described structure or portion thereof has been inspected for compliance with the requirements of this code. (f) The name of the building official . (g) If an automatic sprinkler system is provided. (h) Any special conditions for the building permit. (15) Amending Section R110.4. Section R110.4 of the International Residential Code, 2018 Edition, is amended to read: R110.4 Temporary occupancy. The building official is authorized to issue a temporary certificate of occupancy before the completion of the entire work covered by the permit; provided that the portion or portions that are subject to the temporary certificate can be occupied safely and is or are in compliance with the requirements of this code. The building official shall set a time period during which the temporary certificate of occupancy is valid. (16) Amending Section R110.5. Section R110.5 of the International Residential Code, 2018 Edition, is amended to read: R110.5 Revocation. The building official may suspend or revoke a certificate of occupancy issued under the provisions of this code whenever the certificate has been issued in error, or on the basis of incorrect information provided, or where it is determined that the structure or portion thereof violates any ordinance or regulation or any of the provisions of this code. (16a) Adding Section R111. Section R111 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code. (17) Adding Section R112. Section R112 of the International Residential Code, 2018 Edition, is added by reference and made a part of this code, except that Section R112.1 is amended to read: R112.1 General. Board of Appeals shall be in accordance with International Building Code Section 113 as amended in ROH Section 16-1.1, amendment (18). (18) Adding Section R113. A new Section R113 is added to read: SECTION R113 - VIOLATIONS AND PENALTIES For violation and penalty provisions, see ROH Chapter 16, Article 10. (19) Amending Section R202. Section R202 is amended by amending or adding the following definitions to read: (a) By adding immediately after “ACCESSIBLE” the following definition to read: ACCESSORY DWELLING UNIT (ADU). See ROH Chapter 21, Article 10. (b) By amending the definition of “BUILDING, EXISTING” to read: BUILDING, EXISTING. Existing building is a building for which a legal building permit has been issued, or one which complied with the Building Code in effect at the time the building was erected. (c) By adding the following definitions: BUILDING, ENCLOSED: A building that does not comply with the requirements for open or partially enclosed building . BUILDING, OPEN: A building having each wall at least 80 percent open. A o ≥ 0.8 A g where: A o = total area of openings in a wall that receives positive external pressure, in ft² (m²) A g = the gross area of that wall in which Ao is identified, in ft² (m²) BUILDING, PARTIALLY ENCLOSED: A building that complies with both of the following conditions: 1. The total area of openings in a wall that receives positive external pressure exceeds that sum of the areas of openings in the balance of the building envelope (walls and roof) by more than 10 percent. 2. The total area of openings in a wall that receives positive external pressure exceeds four ft 2 (0.37 m 2 ) or one percent of the area of that wall, whichever is smaller, and the percentage of openings balance of the building envelope does not exceed 20 percent. These conditions are expressed by the following equations: 1. A o > 1.1A oi 2. A o > 4 ft² (0.37 m²) or > 0.01 A g , whichever is smaller, and A oi /A gi ≤ 0.20 Where: A o ,A q are defined for open building. A oi = the sum of the areas of openings in the building envelope (walls and roof) not including A o , in ft² (m²). A gi = the sum of the gross surface areas of the building envelope (walls and roof) not including A g , in ft² (m²). (d) By amending the definition of “BUILDING OFFICIAL” to read: BUILDING OFFICIAL. The Director of Planning and Permitting of the City or the Director’s authorized representative. (e) By adding definitions of “CARPORT” after “CAP PLATE” to read: CARPORT. A private garage which is at least 100 percent open on one side and with 50 percent net openings on another side or which is provided with an equivalent of such openings on two or more sides. A private garage which is 100 percent open on one side and 25 percent open on another side with the latter opening so located to provide adequate cross ventilation may be considered a carport when approved by the building official. (f) By adding the following definition immediately before the definition of “FENESTRATION” to read: FENCE. A structure of permanent material such as wrought iron, wire, wood, vinyl, plastic, etc., with post foundations, erected for purposes of enclosure, division of property or decoration. (g) By amending the definition of “KITCHEN” to read: KITCHEN. Shall be as defined in the Land Use Ordinance, ROH Chapter 21. (h) By adding the definition of “OCCUPANCY CLASSIFICATION” after “NOSING” to read: OCCUPANCY CLASSIFICATION. The formal designation of the primary purpose of the building, structure, or portion thereof. Structures shall be classified into one or more of the occupancy groups listed in this section based on the nature of the hazards and risks to building occupants generally associated with the intended building or structure. Different classifications of occupancy and use represent varying levels of hazard and risk to building occupants and adjacent properties. Certificates of occupancy permit specific occupancy classifications, not all uses within a group occupancy. (i) By adding the definition of “SPRINKLER EQUIVALENCY” after “SPLINE” to read: SPRINKLER EQUIVALENCY. The use of sprinkler equivalency systems, methods, or devices of equivalent or superior quality, strength, fire resistance, effectiveness, durability, and safety to those prescribed by the Fire Code, provided technical documentation is submitted to the Authority Having Jurisdiction to demonstrate equivalency and the system, method, or device is approved for the intended purpose. (j) By amending the definition of “THIRD-PARTY CERTIFICATION AGENCY” to read: THIRD-PARTY CERTIFICATION AGENCY. An approved agency operating a product, material certification system that incorporates an initial product testing, assessment and surveillances of a manufacturer’s quality control system. An approved agency may be an individual who has been qualified by the department of planning and permitting to perform single-family residential plans review for code compliance, by having the necessary qualifications who has passed an examination administered by the building official with a qualifying score to review for single-family residential building permit requirements. (k) By amending the definition of “THIRD PARTY CERTIFIED” to read: THIRD PARTY CERTIFIED. Either a certification obtained by a manufacturer, indicating that the function and performance characteristics of a product or material have been determined by testing and ongoing surveillance by an approved third-party certification agency; or a certification of code compliance from an approved third-party residential plans reviewer, upon a form provided by the building official for compliance to the requirements to obtain a building permit. Manufacturer assertion of certification is in the form of identification in accordance with the requirements of the third-party certification agency. (l) By adding the definition of “TRANSIENT” after “TOWNHOUSE” to read: TRANSIENT. Occupancy of a dwelling unit where the occupants are primarily residing for a period not more than 90 consecutive days. (m) By adding the following definition, immediately after “WALL, RETAINING” to read: WALL, SITE. A structure of stone, brick, masonry, concrete, or other similar permanent material, raised to some height and erected for purposes of enclosure, division of property or decoration. (20) Amending Section R301.1.1. Section R301.1.1 is amended by adding Section R301.1.4 to read: R301.1.4 Complete load path and uplift ties. Blocking, bridging, straps, approved framing anchors or mechanical fasteners shall be designed and installed to provide continuous ties from the roof to the foundation system. Sheet metal clamps, ties or clips, shall be formed of galvanized steel or other approved corrosion-resistant material not less than 0.040 inch (1.02 mm) nominal thickness. Uplift resistance shall be in accordance with International Residential Code Table R802.11. (21) Amending Table R301.2 (1). Table R301.2 (1) is amended to read: TABLE R301.2(1) CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA WIND SPEED (mph) SEISMIC DESIGN CATEGORY SUBJECT TO DAMAGE FROM FLOOD HAZARDS Weathering Termite Decay Per Figure R301.2(8) State Residential Code C or D o Negligible Very heavy Moderate to severe FEMA (22) Amending Section R301.2.1. Section R301.2.1 is amended by adding Table R301.2.1 to read: TABLE R301.2.1 WIND SPEED BASED ON APPLICABLE WIND DESIGN CRITERIA Effective Ultimate Design Wind Speed a Effective Nominal Design Wind Speed b Wind Provisions c Windborne Debris Protection V eff-ult < 140 V eff-asd < 111 Residential Code c Not required 140 ≤ V eff-ult < 149 111 ≤ V eff-asd < 118 Residential Code c Required 149 ≤ V eff-ult 118 ≤ V eff-asd Alternative Provisions d Required a The Effective Ultimate Design Wind Speed, V eff-ult , shall be obtained from the basic wind speed definition used for structural design of Buildings in the 2018 IBC, ASCE7-16 and Section 16-1.1. b Wind speed conversion to the Effective Nominal Design Wind Speed, V eff-ult shall be in accordance with section R301.2.1.3. c Where the Residential Code requires the Basic Wind Speed, the Effective Nominal Design Wind Speed, V eff-ult , shall be used. d The applicability of the wind design provisions of the Residential Code are exceeded and shall not be used. R301.1.1 Alternative provisions provides a list other codes and standards which shall be used in conjunction with applicable requirements of the Residential Code to complete the design. (23) Amending Section R301.2.1. Section R301.2.1 is amended to read: R301.2.1 Wind design criteria. Buildings and portions thereof may be constructed in accordance with the wind provisions of this code; provided that the ultimate design wind speed V ult , determined from Figure R301.2(5)(e), is less than 140 mph. The structural provisions of this code for wind loads are not permitted where wind design is required as specified in Section R301.2.1.1. Where different construction methods and structural materials are used for various portions of a building, the applicable requirements of this section for each portion shall apply. Where not otherwise specified, the wind loads listed in Table R301.2(2) is adjusted for height and exposure using Table R301.2(3), shall be used to determine design load performance requirements for wall coverings, curtain walls, roof coverings, exterior windows, skylights, garage doors, and exterior doors. Asphalt shingles shall be designed for wind speeds in accordance with Section R905.2.4. A continuous load path shall be provided to transmit the applicable uplift forces in Section R802.11.1 from the roof assembly to the foundation. (24) Amending Section R301.2.1.2 and Table R301.2.1.2. Section R301.2.1.2 and Table R301.2.1.2 are amended to read: R301.2.1.2 Protection of openings. Windows in Buildings located in windborne debris regions shall have glazed openings protected from windborne debris. Glazed opening protection for windborne debris shall meet the requirements of the Large Missile Test of ASTM E 1996 and of ASTM E 1886 referenced therein. Exceptions: 1. Wood structural panels with a minimum thickness of 7/16 inch (11 mm) and a maximum panel span of 8 feet (2,438 mm) shall be permitted for opening protection in one- and two-story Buildings classified as Group R-3 or R-4 occupancy. Panels shall be precut so that they shall be attached to the framing surrounding the opening containing the product with the glazed opening. Panels shall be predrilled as required for the anchorage method and shall be secured with the attachment hardware provided and anchors permanently installed on the Building. Attachment in accordance with Table R301.2.1.2 of this code, with corrosion-resistant attachment hardware provided and anchors permanently installed on the Building is permitted for Buildings with a mean roof height of 33 feet (10,058 mm) or less where effective ultimate design wind speeds, V eff-ult do not exceed 175 mph (78 m/s). 2. Glazing in accessory structures to the single- Family dwelling to include but not limited to greenhouses and minor storage sheds. 3. Partially enclosed Occupancy R-3 Buildings shall be permitted to be designed without wind-borne debris protection. Partially enclosed and open Occupancy R-3 Buildings shall also include a residential safe room in accordance with ROH Chapter 16, Article 13, Hawaii Residential Safe Room. TABLE R301.2.1.2 WINDBORNE DEBRIS PROTECTION FASTENING SCHEDULE FOR WOOD STRUCTURAL PANELS a, b, c, d FASTENER TYPE FASTENER SPACING Panel span ≤ 4 foot Panel span > 4 foot and ≤ 6 foot Panel span > 6 foot and ≤ 8 foot TABLE R301.2.1.2 WINDBORNE DEBRIS PROTECTION FASTENING SCHEDULE FOR WOOD STRUCTURAL PANELS a, b, c, d FASTENER TYPE FASTENER SPACING Panel span ≤ 4 foot Panel span > 4 foot and ≤ 6 foot Panel span > 6 foot and ≤ 8 foot No. 8 Wood screw based anchor with 2-inch embedment length 16" 10" 8" No. 10 Wood screw based anchor with 2-inch embedment length 16" 12" 9" ¼-inch lag screw based anchor with 2-inch embedment length 16" 16" 16" For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound = 0.454 kg, 1 mile per hour = 0.447 m/s. a. This table is based on 175 mph effective ultimate design wind speed and a mean roof height of 45 feet. b. Fasteners shall be installed at opposing ends of the wood structural panel. Fasteners shall be located a minimum of 1 inch from the edge of the panel. c Anchors shall penetrate through the exterior wall covering with an embedment length of 2 inches minimum into the Building frame. Fasteners shall be located a minimum of 2-½ inches from the edge of concrete block or concrete. d. Where screws are attached to masonry or masonry/stucco, they shall be attached utilizing vibration-resistant anchors having a minimum ultimate withdrawal capacity of 1,500 pounds. (25) Amending Section R301.2.1.3 and Table R301.2.1.3. Section R301.2.1.3 and Table R301.2.1.3 are amended to read: R301.2.1.3 Wind speed conversion. When referenced documents are based on fastest mile wind speeds, V fm , or three second gust effective nominal wind speeds, V eff-asd , the effective ultimate design wind speed, V eff-ult , obtained from Figure R301.2(8) must be converted using Table R301.2.1.3. TABLE R301.2.1.3 CONVERSION OF EQUIVALENT BASIC SPEEDS a,b,c V eff- ult 107 114 120 126 133 139 152 158 164 177 183 190 202 215 V eff- asd 85 90 95 100 105 110 120 125 130 140 145 150 160 170 V fm 71 76 80 85 90 95 104 109 114 123 128 133 142 152 For SI: 1 mile per hour = 0.447 m/s. a. Linear interpolation is permitted. b. V eff-asd = Effective nominal design wind speed applicable to methods specified in Exceptions 1 through 5 of Section 1609.1.1 of the International Building Code. V eff-asd = 0.791 V eff-ult c. V eff-ult = Effective ultimate design wind speed from Table R301.2(8) (26) Amending Section R302.3. Section R302.3 is amended by adding Exception 3 to read: 3. An Accessory Dwelling Unit (ADU) created within an existing dwelling unit shall be permitted to be separated from the primary dwelling unit with a single layer of 5/8-inch Type X gypsum board or the equivalent fire resistive construction on the walls and ceilings on the ADU portion. (27) Amending Section R303.1. The first paragraph of Section R303.1 is amended to read: R303.1 Natural light and ventilation. All guest rooms and habitable rooms shall have an aggregate glazing area of not less than 10 percent of the floor area of such rooms. Natural ventilation shall be in accordance with the Housing Code. (28) Amending Section R303.4. Section R303.4 is amended to read: R303.4 Mechanical ventilation. Mechanical ventilation must be as specified in the Housing Code . (29) Amending Section R306. Section R306 is amended to read: SECTION R306 - SANITATION Sanitation must be as specified in ROH Chapter 16A, the Housing Code . (30) Amending Section R309.2. Section R309.2 is amended to read: R309.2 Carports. Carport floor surfaces must be of approved noncombustible materials. The area of floor used for parking of automobiles or other vehicles shall be sloped to facilitate the movement of liquids to a drain or toward the main vehicle entry doorway. Exceptions: 1. Asphalt surfaces shall be permitted at ground level in carports. 2. A carport on a hillside lot serving a detached single-family dwelling may have wood floor planking at least 2 inches (51 mm) in nominal thickness laid with at least 1/4-inch (6.4 mm) spacing between the planks. (31) Amending Section R309.3. Section R309.3 is amended to read: R309.3 Flood hazard areas. See ROH Chapter 16, Article 11, and ROH Chapter 21A. (32) Amending Section R310.1. Section R310.1 is amended by adding Exception 3 to read: 3. Non-safety glazed glass jalousie bladed windows may be used for emergency escape or rescue. (33) Amending Section R311.7.1. Section R311.7.1 is amended by adding Exception 2 to read: 2. Private stairways serving an occupant load of less than five persons shall not be less than 30 inches (762 mm) in width. (34) Adding Section R313.2.2. Section R313.2.2 is added to read: R313.2.2 Sprinkler Equivalency Requirements for Access Road and Firefighting Water Supply. The installation of a fire sprinkler system shall only be required for new homes where a sprinkler equivalency for fire access road or water supply is needed. Any renovation or addition to an existing one- and two-family dwelling that is not creating a new stand-alone dwelling unit is still considered exempt from requiring a fire sprinkler system. The sprinkler equivalency will be required if the fire department access and/or water supply does not meet the requirements of ROH Chapter 20. The sprinkler equivalency requirements include the following conditions: (a) Fire hydrants shall be provided for detached one- and two-family dwellings in accordance with both of the following criteria: (1) The maximum distance to a fire hydrant from the closest point on the building shall not exceeds 600 feet (183 meters), and (2) The distance between fire hydrants shall not exceed 800 feet (244 meters). (b) When Fire Department Access and Water Supply requirements of NFPA 1 2018 edition Chapter 18, as amended are not met, the applicant may request approval for an equivalency to install an NFPA 13D automatic sprinkler system. Exceptions: Where approved by the Fire Official . (35) Amending Sections R317.1 and R317.3.1. Sections R317.1 and R317.3.1 are amended to read: R317.1 Location required. Protection of wood and wood-based products from decay shall be provided in the following locations by the use of wood that is preservative-treated in accordance with AWPA U1. R317.3.1 Fasteners for preservative-treated wood. Fasteners for non-borate pressure preservative and fire-retardant-treated wood shall be of hot-dipped zinc-coated galvanized steel, stainless steel, silicon bronze, or copper. The coating weights for zinc-coated fasteners shall be in accordance with ASTM A 153. Exceptions: 1. One-half-inch (12.7 mm) diameter or greater steel bolts. 2. Fasteners other than nails and timber rivets shall be permitted to be of mechanically deposited zinc-coated steel with coating weights in accordance with ASTM 8695, Class 55 minimum. (36) Amending Section R317. Section R317 is amended by adding Section R317.5 to read: R317.5 Glued laminated, engineered or composite structural members. For the portions of these structural members that form the structural supports of a building or other structure, which are structural glued laminated members made up of dimensional lumber, engineered wood products, or structural composite lumber, pressure treated in accordance with AWPA U 1 (UC1 through UC48) or by Light Oil Solvent Preservative (LOSP) treatment standard as approved by the building official . Water based treatment processes are not allowed to be used on these products unless specified by a structural engineer for use with reduced load values. (37) Amending Section R317. Section R317 is amended by adding Section R317.6 to read: R317.6 Under-floor clearance. Minimum clearance between the bottom of floor joists or bottom of floors without joists and the ground beneath shall be 24 inches (610 mm); the minimum clearance between the bottom of girders and the ground shall be 18 inches (457 mm). Exception: Open slat wood decks shall have ground clearance of at least 6 inches (152 mm) for any wood member. Accessible under-floor areas shall be provided with a minimum 14 inches x 24 inches (356 mm x 610 mm) access opening. Accessible under-floor areas shall be provided with a minimum 18-inch (457 mm) by 24-inch (610 mm) access opening, effectively screened or covered. Pipes, ducts and other construction shall not interfere with the accessibility to or within under-floor areas. See Section M1305.1.3 of the International Residential Code, 2018 Edition, for access requirements where mechanical equipment is located under floors. (38) Amending Section R318.1.1. Section R318.1.1 is amended by adding a second paragraph to read: All lumber less than 2 inches (51 mm) in nominal thickness shall be identified per bundle by means of a label consisting of the above requirements. Labels measuring no less than 6 inches x 8 inches (152 mm x 203 mm) shall be placed on the lower left corner of the strapped bundle. (39) Amending Section R318.1. Section R318.1 is amended by adding Section R318.1.3to read: R318.1.3 Structure protection. Where the plates, sills, and structural lumber of new wood frame buildings are supported directly on the ground by: 1. A concrete slab or foundation, the soil beneath the building shall be either: 1.1 Chemically treated at the maximum label rate for control of Formosan subterranean termites by a licensed pest control operator, or 1.2 Basaltic Termite Barrier (BTB), stainless steel termite barrier mesh, or other termite barrier approved by the building official , installed according to the manufacturer’s installation instructions. 2. The perimeter of the structure shall be protected by either: 2.1 A continuous chemical barrier applied at the maximum label rates by an operator licensed to control ground termites to the backfill in 12 inches (305 mm) lifts in a band extending at least 12 inches (305 mm) beyond the concrete; or 2.2 A continuous barrier of BTB at least 4 inches (102 mm) in thickness extending at least 6 inches (152 mm) beyond the concrete slab. 3. A poured-in-place concrete foundation wall, the foundation wall shall be protected from the adjacent soil by either: 3.1 A continuous chemical barrier applied at the maximum label rates by an operator licensed to control ground termites to the backfill in 12 inches (305 mm) lifts in a band extending at least 12 inches (305 mm) beyond the concrete; or 3.2 A continuous barrier of BTB at least 6 inches (152 mm) in thickness extending the full height of the retained soil; or 3.3 An approved stainless steel termite barrier mesh shall protect all cracks and joints. 4. A CMU foundation wall, the foundation wall shall be protected from the adjacent soil by either: 4.1 A continuous barrier of BTB at least 6 inches (152 mm) in thickness extending the full height of the retained soil; 4.2 An approved stainless steel termite barrier mesh between the top of the CMU and all wood framing; or 4.3 A continuous cap or reinforced concrete at least 4 inches (102 mm) in thickness between the top of the CMU and all wood framing. Exception: When a CMU foundation wall forms a retaining wall that is part of a wood frame structure, the CMU shall be protected from the soil by a full barrier of BTB or stainless steel termite barrier. (40) Amending Section R318.2. Section R318.2 is amended to read: R318.2 Chemical termiticide treatment. Chemical termiticide treatment shall include soil treatment and/or field applied wood treatment. The concentration, rate of application, and method of treatment of the chemical termiticide shall be in strict accordance with the termiticide label. Chemical treatment shall be applied at the maximum label rate for control of Formosan subterranean termites by a licensed pest control operator. There shall be a continuous chemical barrier applied at the maximum label rates, by an operator licensed to control ground termites, to the finished grade in a band extending at least 12 inches (305 mm) beyond the concrete. (41) Amending Section R318.3. Section R318.3 is amended to read: R318.3 Barriers. Approved physical barriers, such as metal or plastic sheeting or collars specifically designed for termite prevention, Basaltic Termite Barrier (BTB), stainless steel termite barrier mesh, or other termite barrier approved by the building official , installed according to the manufacturer’s installation instructions, shall be installed in manner to prevent termites from entering the structure. Shields placed on top of an exterior foundation wall are permitted to be used only if in combination with another method of protection. (42) Amending Section R322.2. Section R322.2 is amended to read: R322.2 Flood hazard areas. All areas that have been determined to be located within areas of special flood hazard must be in accordance with ROH Chapter 21A. (43) Amending Section R323.1. Section R323.1 is amended to read: R323.1 General. This section applies to the construction of storm shelters when constructed as separate detached buildings or when constructed as safe rooms within buildings for the purpose of providing safe refuge from storms that produce high winds, such as tornados and hurricane. In addition to other applicable requirements in this code, storm shelters shall be constructed in accordance with ICC/NSSA-500 or ROH Chapter 16, Article 13. (44) Amending Chapter 3. Chapter 3 is amended by adding Sections R328 and R328.1 through R328.4 to read: R328 Light-transmission plastic roof structures. Awnings, patio covers, carports and similar structures. Roofed structures constructed of light-transmitting plastics shall comply with this section. R328.1 Specifications. Light-transmitting plastics, including thermoplastic, thermosetting or reinforced thermosetting plastic material shall have a self-ignition temperature of 650°F (343°C) or greater where tested in accordance with ASTM D 1929, a smoke-development index not greater than 450 where tested in the manner intended for use in accordance with ASTM E 84 or UL 723, or a maximum average smoke density rating not greater than 75 where tested in the thickness intended to be used in accordance with ASTM D 2843 and shall conform to one of the following combustibility classifications. (a) Class CC1: Plastic materials that have a burning extent of 1 inch (25 mm) or less where tested at a nominal thickness of 0.060 inches (1.5 mm), or in the thickness intended for use, in accordance with ASTM D 635. (b) Class CC2: Plastic materials that have a burning rate of 2-1 /2 inches per minute (1.06 mis) or less where tested at a nominal thickness of 0.060 inches (1.5 mm), or in the thickness intended for use, in accordance with ASTM D 635. R328.2 Structural requirements. Light-transmitting plastic materials in their assembly shall be of adequate strength and durability to withstand the loads indicated in International Residential Code Section R301.6. Technical data shall be submitted to establish stresses, maximum unsupported spans and such other information for the various thickness an forms used as deemed necessary by the building official. R328.3 Fastening. Fastening shall be adequate to withstand the loads in Section R301. Proper allowance shall be made for expansion and contraction of light-transmitting plastic materials in accordance with accepted data on the coefficient of expansion of the material and other material in conjunction with which it is employed. R328.4 Size limitation. (a) Swimming pool structures shall not exceed 5,000 square feet (465 m 2 ) in area and shall have a minimum fire separation distance of 10 feet (3,048 mm). (b) Roof coverings over carports, terraces, and patios shall have a minimum fire separation distance of 6 feet (1,829 mm). (45) Amending Section R403.1.6. Section 403.1.6 is amended by adding Section R403.1.6.2 to read: R403.1.6.2 Concrete Strap Type Anchors. Concrete strap-type anchors made out of cold-formed steel shall not be used along the perimeter edges of a slab on grade where the steel does not have at least 1-1 /2 inches side cover or other adequate protection. (46) Amending Chapter 6. Chapter 6 is amended by adding Section R611 to read: SECTION R611 WALLS WITHOUT STUDS R611.1 General. For Type V-B buildings, single-wall construction without studs may be used in accordance with this section for repairs to existing buildings of single-wall construction. One-story and the uppermost story of wood frame Type V-B buildings may be of single-wall construction with board thickness specified in this section, without studs, when requirements of this section are met. Floor to ceiling height shall not exceed 8 feet (2,438 mm). Any provision of this code to the contrary notwithstanding, studding of not less than 2-inch x 3-inch (51 mm x 76 mm) may be used on one-story buildings of double-wall construction. When wood-frame dwellings are supported by posts, 2-inch x 4-inch (51 mm x 102 mm) foundation bracing shall be provided. For one-story conventional residential structures, the local practice of using foundation blocks with termite shields shall be acceptable in all areas except in flood hazard areas and developments adjacent to drainage facilities as specified in ROH Section 16-11.1. R611.2 Board for Single-Wall Construction. R611.2.1 One and One-Eighth Inch Boards. Single-wall construction with boards of 1-1/8 inch (28.6 mm) net thickness are not required to have girts. R611.2.2 One-Inch Boards. Where single-wall construction is with boards of 1-inch thickness (25 mm), no girt is required, provided approved stiffeners for any section of such wall are spaced not more than 10 feet (3,048 mm) along the wall. R611.2.3 Three-Fourths-Inch Boards. Single-wall construction with boards of 3/4-inch (19 mm) net thickness shall have girts and cross partitions at least every 30 feet (9,144 mm). R611.2.4 Approved Stiffeners. Approved stiffeners shall be studs at least 2-inches x 4-inches (51 mm x 102 mm), full height window or door jambs, posts, walls or partitions at right angles to the section of wall under construction. R611.2.5 Girts. Girts for single-wall construction shall be not less than 2-inch x 6-inch (51 mm x 152 mm) belt course or other approved strengthening about mid height between the floor and ceiling on all exterior walls. R611.2.6 Complete Load Path. Blocking, bridging, straps, approved framing anchors or mechanical fasteners shall be designed and installed to provide continuous ties from the roof to the foundation system. Sheet metal clamps, ties or clips, shall be formed of ASTM A153 G90 galvanized steel or other approved corrosion-resistant material not less than 0.040-inch (1 mm) nominal thickness. Uplift resistance shall be in accordance with International Residential Code Table R802.11. (47) Amending Subsection R903.4.1. Subsection R903.4.1 is amended to read: R903.4.1 Secondary (emergency overflow) drains or scuppers. Where roof drains are required, secondary emergency overflow drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water shall be entrapped if the primary drains allow buildup for any reason. Overflow drains having the same size as the roof drains shall be installed with the inlet flow line located 2 inches (51 mm) above the low point of the roof, or overflow scuppers having three times the size of the roof drains and having a minimum opening height of 4 inches (102 mm) shall be installed in the adjacent parapet walls with the inlet flow located 2 inches (51 mm) above the low point of the roof served. Installation shall be in accordance with the Plumbing Code. (48) Adding Chapter 11. A new Chapter 11 is added to read: CHAPTER 11 - ENERGY EFFICIENCY See ROH Chapter 16B. (49) Amend Section M1201. Section M1201 is amended to read: M1201.1 Scope. The provisions of Chapters 12 through 24 should only be considered a guide and are not mandatory. (50) Amend Part VII. Part VII is amended to read: Part VII-Plumbing Part VII, which corresponds to Chapter 25 through 33, is deleted in its entirety. Refer to ROH Chapter 19. (51) Amend Chapters 35 through 43. Chapters 35 through 43 have been amended to read: Chapters 35 through 43 Electrical. Chapters 35 through 43 are deleted in their entirety. Refer to ROH Chapter 17. (52) Amending Chapter 44. Chapter 44 (Reference Standards-AISI S230) is amended to read: Standard reference number Title Referenced In code section number ACI 318, Section 19.3.2.1 Modify ACI 318 Table 19.3.2.1 as follows: Change the Maximum w/cm ratio for Exposure Class C1 to 0.50. Concrete with demonstrated equivalent performance is acceptable in lieu of prescriptive mixture proportions for Exposure Class C1 and C2. Exposure Class C1 and C2. Exposure Class C1 and C2 shall apply to any exposed concrete within 600 feet from a shoreline when light gauge metal frame is used. Exposed concrete is defined as any concrete that is not enclosed within a building envelope. ACI 318 Section 20.7.6 ACI 318, Section 20.7.6 Anchor Bolts at the Perimeter Edge of a Slab on Grade. Anchor bolts shall be hot dipped galvanized in accordance with ASTM F2329 and have a minimum concrete side cover of 1-1/2 inches unless provisions have been made to protect the anchor bolts from corrosion. AISI S230 Standard for Cold-formed Steel Framing-Prescriptive Method for One- and Two-Family Dwellings R301.1.1, R301.2.1.1, R301.2.2.3.1 R301.2.2.7, R301.2.2.8 R603.6, R603.9.4.1, R603.9.4.2, R608.9.2, R608.9.3, Figure R608.9(11), R608.10 Editor’s note: The column headings have been modified to maintain consistent formatting. (53) Amending Section T101.1. Section T101.1 is amended by adding an Exemption to read: Exemption: A new single-family dwelling that receives a variance from the chief energy officer of the Hawaii State Energy Office.