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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b. Have structural components capable safe from flooding, and shall not increase
of resisting hydrostatic and flood risk or
hydrodynamic loads and the effects of 2. In Zone VE, permanent wharves, piers, and
buoyancy. docks shall have a qualified professional
c. Be certified by a registered develop or review the structural design
professional engineer or architect that and specifications, must be designed to be
the design and methods of reasonably safe from flooding, and shall
construction are in accordance with not increase flood risk.
accepted standards of practice for R. Coastal floodplains
meeting the provisions of this section. 1. All new construction located within Zones
Such certification shall be provided AE and VE shall be located landward of the
with the application for a Flood reach of mean high tide except as provided
Hazard Development Permit, as in Subsection 12.4.5(R)(8).
required by Subsection 12.4.2(M), (N), 2. New construction or substantial
and (O). improvement of any structure located
2. Zones AO and AH shall have adequate within Zones VE or Coastal AE shall:
drainage paths around containment walls a. Have the bottom of all electrical,
on slopes, to guide flood water away from heating, plumbing, ventilation and air
the proposed walls. conditioning equipment, permanent
3. Zone AO shall have the top of the fixtures and components, HVAC
containment wall elevated above the ductwork and duct systems, and any
highest adjacent grade: other utility service equipment,
a. At least two feet higher than the depth facilities, machinery, or connections
specified in feet on the Flood Insurance servicing a structure, elevated to at
Rate Map, or least two feet above the base flood
b. At least three feet if no depth number is elevation. Systems, fixtures,
specified, and equipment, and components shall not
c. Shall meet the requirements of be mounted on or penetrate through
Subsection 12.4.5(P)(1)(b) and (c). walls intended to break away under
Q. Wharves, piers, and docks. New construction flood loads.
or substantial improvement of wharves, piers, b. Be elevated on posts or columns such
and docks are permitted in and over water and that:
seaward of the mean high tide if the following i. The bottom of the lowest
requirements are met: horizontal structural member of
1. In Zones A, AE, Coastal AE, AO, and AH, the lowest floor (excluding the
permanent wharves, piers, and docks shall pilings or columns) is elevated to
comply with all applicable local, state, and two feet above the base flood
federal regulations, must be reasonably elevation. 12-14 | CITY OF PORTLAND LAND USE CODE FLOODPLAIN MANAGEMENT

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