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Last modified
1/25/2010 6:25:51 PM
Creation date
10/4/2006 11:20:23 PM
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Floodplain Documents
County
Statewide
Community
na
Basin
Statewide
Title
Manufactured Home Installation in Flood Hazard Areas
Date
9/1/1985
Prepared By
FEMA
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br /> <br />Coastal flooding is most frequent on the Atlan- <br />tic and Gulf Coasts, which are made up of a suc- <br />cession of barrier islands, beaches, and dunes, <br />These physiographic elements are maintained in <br />dynamic balance as sand is moved by wind, <br />waves, and ocean currents, This self- replenishing <br />beach-dune system resists storm surges and pro- <br />vides a buffer for inland areas, <br />In coastal areas, as shown in Figure 1,27, the <br />removal of beach sand and the leveling of dunes, <br />along with the construction of seawalls, jetties, and <br />piers, are common practice, These can destroy <br />the shoreline's natural protection system, further <br />increasing the impacts of surges and high winds, <br /> <br /> <br />Figure 1.27 Coastal Area <br /> <br />Manufactured homes in coastal flood hazard <br />areas, as shown' in Figure 1,28, are subject to the <br />same flood forces experienced in riverine flooding <br />environments, However, in some cases, the <br />coastal forces occur at greater magnitude and <br />severity, <br /> <br /> <br />Figure 1.28 Elevation in Coastal Zone <br /> <br />Coastal areas represent a unique hazard to the <br />typical manufactured home installation due to the <br />potential for very high forces from velocity water <br /> <br />and wave action, These factors, combined with the <br />potential for scour and erosion and high debris im- <br />pact forces, represent a significant hazard to the <br />typical manufactured home set-up, The suscep- <br />tibility of coastal areas to extremely high winds <br />presents additional hazards to manufactured <br />homes sited in this environment, as shown in <br />Figure 1,29, <br /> <br /> <br />Figure 1.29 Wind Damage <br /> <br />In the coastal environment, the combined ef- <br />fects of flood and wind forces must be evaluated <br />to determine adequate anchoring and elevating <br />techniques, Subsequent chapters of the manual <br />will address the impact of flood and wind forces <br />on manufactured homes, <br /> <br />REGULATORY REQUIREMENTS <br /> <br />As an initial step in the installation of a- <br />manufactured home in a flood hazard area, <br />federal, state, and local regulatory requirements <br />must be identified and assessed, Much informa- <br />tion regarding flood hazards and construction in <br />flood-prone areas is available through a wide varie- <br />ty of public agencies at all levels of government <br />(see Appendix C), <br />Federal Regulations-The National Flood In- <br />surance Program (NFIP) is the Federal Govern- <br />ment's principal administrative mechanism for <br />, reducing flood losses, Established by Congress <br />in 1968 and broadened and modified since then, <br />the NFIP is administered by the Federal Insurance <br />Administration (FIA) of the Federal Emergency <br />Management Agency (FEMA), The program offers <br />property insurance for buildings and their contents <br />in flood-prone areas where conventional insurance <br />had been generally unavailable, <br />The NFIP provides insurance to communities <br />that agree to implement comprehensive land use <br />planning and management to reduce flood <br /> <br />11 <br />
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