Portland City Code ch. 14

Citation: Portland City Code ch. 14
Parent Document: Portland City Code ch. 14
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/ae8cabd1-66eb-4a1c-9224-92bbca5e792f ↗

Full Text

3,835 chars

and water loads acting simultaneously obtained pursuant to Subsections
on all structural components. Water 12.4.2(D)(2), 12.4.4(B)(4), or 12.4.4(C)(1).
loading values used shall be those O. Wharves, piers, and docks. New construction
associated with the base flood. or substantial improvement of wharves, piers,
N. Containment walls. New construction or and docks are permitted in Zones A, A1-30, AE,
substantial improvement of any containment AO, AH, V1-30, and VE, in and over water and
wall shall meet the following requirements by seaward of the mean high tide if the following
zone: requirements are met:
1. Zones A1-30, AE, AH, V1-30, and VE shall 1. Wharves, piers, and docks shall comply
have the containment wall elevated to at with all applicable local, state, and federal
least two feet above the base flood regulations.
elevation, have structural components 2. Commercial wharves, piers, and docks
capable of resisting hydrostatic and involving fill shall adhere to the design and
hydrodynamic loads and the effects of construction standards contained in the
buoyancy, and be certified by a registered U.S. Army Corps of Engineers’ Shore
professional engineer or architect that the Protection Manual.
design and methods of construction are in P. Coastal flood plains
accordance with accepted standards of 1. All new construction located within Zones
practice for meeting the provisions of this A1-30, AE, A, V1-30, and VE shall comply
section. Such certification shall be with all applicable local, state, and federal
provided with the application for a Flood regulations.
Hazard Development Permit, as required 2. New construction or substantial
by Subsection 12.4.2. improvement of any structure located
2. Zones AO and AH shall have adequate within Zones V1-30 or VE shall be elevated
drainage paths around containment walls on posts or columns such that:
on slopes, to guide flood water away from a. The bottom of the lowest horizontal
the proposed walls. structural member of the lowest floor
3. Zone AO shall have the top of the (excluding the pilings or columns) is
containment wall elevated above the elevated to two feet above the base
highest adjacent grade at least two feet flood elevation.
higher than the depth specified in feet on b. The pile or column foundation and the
the community’s flood insurance rate map, elevated portion of the structure
or at least three feet if no depth number is attached thereto is anchored to resist
specified. flotation, collapse, and lateral
4. Zone A shall have the containment wall movement due to the effects of wind
elevated to at least two feet above the and water loads acting simultaneously
base flood elevation utilizing information on all building components. 12-10 | CITY OF PORTLAND LAND USE CODE FLOOD PLAIN MANAGEMENT

Other Sections in This Document (541)

Full Text