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HomeMy WebLinkAbout1911 Amending Ordinance 1908 - Flood Damage PreventionORDINANCE NO. 1911 AN ORDINANCE AMENDING ORDINANCE NO. 1908 THE CITY COUNCIL OF THE CITY OF PORT TOWNSEND IN REGULAR SESSION ASSEMBLED, DO ORDAIN AS FOLLOWS: Section 1. Section 2.0 of Definitions of Ordinance No. 1908, passed February 16, 1982, is here and hereby amended by the addition thereto of the three following definitions: "BREAKAWAY WALLS" mean any type of walls, whether solid or lattice and whether constructed of concrete, masonry, wood, metal, plastic, or any other suitable building material which are so designed as to breakaway, under abnormally high tides or wave action, without damage to the structural integrity of the building on which they are used or any building to which they might be carried by flood waters. "COASTAL HIGH HAZARD AREA" means the area subject to high velocity waters, including but not limited to, storm surge or tsunamis. The area is designated on the FIRM as Zone VI-30. "MEAN SEA LEVEL" means the average height of the sea for all stages of the tide. Section 2. Section 4.2.2 "Information to be obtained and mentioned" of Ordinance No. 1908, passed February 16, 1982, is here and hereby amended by the addition thereto of the following Subsection (4): (4) In coastal high hazard areas,certification shall be obtained from a registered professional engineer or architect that the structure is securely anchored to adequately anchored pilings or columns in order to withstand velocity waters. Section 3. Section 5.2 "Specific Standards" of Ordinance No. 1908, passed February 16, 1982, is here and hereby amended by the addition thereto of a subsection to be known as "Section 5.2.4 - COASTAL HIGH HAZZARD AREAS" to provide as follows: 5.2.4 COASTAL HIGH HAZARD AREA Coastal high hazard areas (V Zones) are located within the areas of special flood hazard established in Section 3.0. These areas have special flood hazards associated with high velocity waters from tidal surges and, therefore, the following provisions shall apply: (1)Ail buildings or structures shall be located landward of the mean high tide. (2) All buildings or structures shall be elevated so that the lowest supporting member is located no lower than the base flood ......... ~tevation level, with all space below the lowest supporting member open so as not to impede the flow of water, except for breakaway walls as provided for in Section 5.4(8). (3)All buildings or structures shall be securely anchored on pilings or columns. (4) Pilings or columns used as structural support shall be designed and anchored so as to withstand all applied loads of the base flood flow. (5) (6) (7) (8) (9) (10) (11) (12) Compliance with provisions of Section 5.4(2), (3) and (4) shall be certified to by a registered professional engineer or architect. There shall be no fill used for structural support. There shall be no alteration of sand dunes which would increase potential flood damage. Breakaway walls shall be allowed below the base flood elevation provided they are not part of the structural support of the building and are designed so as to breakaway under abnormally high tides or wave actions, without damage to the structural integrity of the building on which they are to be used. If breakaway walls are utilized, such enclosed space shall not be used for human habitation. Prior to construction, plans for any structure that will have breakaway wails must be submitted to the City Engineer for approval. Prohibit the placement of mobile homes, except in an existing mobile home park or mobile home subdivision. Any alteration, repair, reconstruction or improvement to a structure started after the enactment of this ordinance shall not enclose the space below the lowest floor unless breakaway walls are used as provided for in Section 5.4(8) and (9). Section 4. This ordinance shall take effect upon its passage, approval, and publication in the manner provided by law. Read for the first, second and third times, passed by the Council and approved by the Mayor on ATTEST: March 2. 1982.~ ~URE °r City Cle'rk APPROVED AS TO FO~: City Attorney