Who must design and stamp building plans

(a) All plans and specifications relating to work which affects the public safety or health and for which a permit is required shall be prepared, designed, and stamped by a duly licensed architect or professional engineer in the State of Hawai‘i in accordance with chapter 464, Hawai‘i Revised Statutes and section 16-115, Hawai‘i Administrative Rules unless the work is exempt pursuant to section 464-13(b), Hawai‘i Revised Statutes. (b) The following plans and specifications shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or professional structural engineer: (1) All wood trusses of more than 24’ - 0” spans; and (2) All pre-engineered trusses and metal trusses. 5-19 SUPP. 9 (1-2021) (c) For residential (R-3 Occupancies) and accessory (U Occupancies) only, the following plans and specifications shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or professional structural engineer, unless exempt pursuant to section 464.13(b), Hawai‘i Revised Statutes. Whenever the exemption provided for in section 464.13(b) is applied to the construction of a new building, the applicant shall include with the application, proof that the exemption has been recorded with the bureau of conveyances pursuant to section 464-13(c), Hawai‘i Revised Statutes. (1) All plans for post and pier type construction with/without perimeter foundation walls of R-3 Occupancies. (2) Single story or two-story structure for R-3 Occupancy unless exempt pursuant to section 464.13(b), Hawai‘i Revised Statutes. (3) Single story or two-story structure of mixed occupancies (R-3 and U Occupancies) pursuant to section 464.13(b), Hawai‘i Revised Statutes. (4) Structures of R-3 or U Occupancies that are three or more stories in height. (5) Structural members that are concrete, masonry or structural steel. (6) Proposed construction in special hazard flood zones: AE, AH, AO, V, and VE, as prescribed in chapter 27, relating to flood control; electrical installations per chapter 5D, relating to the electrical code; and plumbing installations per chapter 5F, relating to the plumbing code. (7) Structures in high seismic zones. (Category E or Sv > 0.75) (d) All plans and specifications for retaining walls over four feet in height shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or professional structural engineer. (e) Electrical plans and specifications giving such details of the proposed installation as may be required by the authority having jurisdiction to be submitted with the application. Such plans and specifications shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as a professional electrical engineer. Exception: For single and two-family dwellings, townhouses and accessory structures, plans and specifications shall not be required provided the installation meets all of the following criteria: (1) The installation shall not be located in a rain water or sea water flood zone; and (2) Service size disconnect does not exceed 200 amperes. (f) Installation of photovoltaic systems shall require: (1) Electrical design drawings and specifications that have been prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as a professional electrical engineer for residential installations with a cumulative total greater than 10 kilowatts and non-residential installations; and (2) Plans and specifications for building work that have been prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or a professional structural engineer for: (A) Non-residential installations; or SUPP. 15 (1-2024) 5-20 CONSTRUCTION ADMINISTRATIVE CODE § 5-4-3 (B) Residential installations that do not utilize a preapproved system or that are not consistent with approved standards including but not limited to, those relating to span tables, older homes or site-built trusses. (g) Installation of electrical work on residential and nonresidential electrical work in special flood hazard areas shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as a professional electrical engineer. (h) Mechanical plans, included but not limited to plumbing installation and HVAC installation drawings, specifications shall be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as a professional mechanical engineer, and shall be according to State statutes when required by the authority having jurisdiction. Plans for single- or two family dwellings are not required to show plumbing piping plans or diagrams unless requested by the authority having jurisdiction. Exception: For single and two-family dwellings and residential accessory structures, plans and specifications may be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or professional mechanical engineer. (i) Plumbing plans and diagrams shall be required for R-3 single and two family dwellings and townhouses that include four or more bathrooms. (j) The authority having jurisdiction may require plans, computations, and specifications to be prepared, designed, and stamped by a person who is licensed in the State of Hawai‘i as an architect or professional engineer, if prescriptive requirements of the construction code are not being adhered to. (k) No person shall materially deviate from any reviewed plan or specifications or fail, neglect or refuse to comply herewith, unless permission to do so has first been obtained from the person who is licensed in the State of Hawai‘i and listed as the architect or professional engineer of record. Revised drawings or a letter, or both, that show such deviations and have been prepared, designed, and stamped by the architect or professional engineer of record, shall be submitted to the authority having jurisdiction for review and approval. (2020, ord 20-61, sec 2; am 2023, ord 23-88, sec 1.) 5-4-3