Portland Land Use Code

Citation: Portland Land Use Code
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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hydrodynamic loads and the effects of b. In the absence of all data described in
buoyancy; and Subsection 12.4.5(I)(4)(a), to at least
c. Be certified by a registered two feet above the highest adjacent
professional engineer or architect that grade to the structure, or
the design and methods of c. Together with attendant utility and
construction are in accordance with sanitary facilities, be floodproofed to
accepted standards of practice for two feet above the base elevation
meeting the provisions of this section. established in Subsection
Such certification shall be provided 12.4.5(I)(4)(a) or (b) above and meet
with the application for a Flood the floodproofing standards of
Hazard Development Permit, as Subsection 12.4.5(I)(1)(a), (b), and (c).
required by Subsection 12.4.2(M)(N), 5. Zones VE and Coastal AE shall meet the
and (O) and shall include a record of requirements of Subsection 12.4.5(R).
the elevation above mean sea level to J. Manufactured homes. New or substantially
which the structure is floodproofed. improved manufactured homes located within:
2. Zones AO and AH shall have adequate drainage paths 1. Zones AE, AO, and AH shall:
around structures on slopes, to guide flood water a. Be elevated such that the lowest floor
away from the proposed structures. is at least two feet above the base
3. Zone AO shall have the lowest floor flood elevation;
(including basement) elevated above the b. Be on a permanent foundation,
highest adjacent grade: which may be poured masonry slab
a. At least two feet higher than the or foundation walls, with hydraulic
depth specified in feet on the Flood openings, or may be reinforced piers
Insurance Rate Map; or or block supports, any of which
b. At least three feet if no depth number support the manufactured home so
is specified; or that no weight is supported by
c. Together with attendant utility and its wheels and axles; and
sanitary facilities be floodproofed to c. Be securely anchored to an
meet the elevation requirements of adequately anchored foundation
this subsection and floodproofing system to resist flotation, collapse, or
standards of Subsection 12.4.5(I). lateral movement. Methods of
4. Zone A shall have the lowest floor anchoring may include, but are not
(including basement) elevated: limited to:
a. To at least two feet above the base i. Over the top ties anchored to the
flood elevation utilizing information ground at the four corners of the
obtained pursuant to Subsections manufactured home, plus two
12.4.2(K)(1)(b)(i), 12.4.4(C), additional ties per side at
12.4.4(B)(4); or intermediate points 12-10 | CITY OF PORTLAND LAND USE CODE FLOODPLAIN MANAGEMENT

Other Sections in This Document (765)

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