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DPW/LRB CONSTRUCTION CODE - DRAFT 5/26/20 For review and comment (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 Hawaii as an architect or professional civil or structural engineer. 15-25(d).} (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 Hawaii as aprofessional 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: (A) The installation shall not be located in a rain water or sea water flood zone; and (B) Service size disconnect does not exceed 200 amperes. {9-33(a).) (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 Hawaii as a professional electrical engineer for residential and non-residential installations; and {9-33(b)(2).) (2) Plans and specifications for building work that have been prepared, designed, and stamped by a person who is licensed in the State of Hawaii as an architect or a professional structural engineer for: (A) Non-residential installations; or {9-33(b)(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 Hawaii 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 Hawaii as a professional 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. (i) Plumbing plans and diagrams shall be required for R-3 single and two family dwellings and townhouses that include four or more bathrooms; 21