FLOOD09153

• County: Statewide
• Basin: Statewide
• Title: Protecting Your Home from Flood Damage
• Date: 1/1/1996
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

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Elevating a Mobile Home

The three basics of proper elevation and anchoring of a manufactured home are: Foundations, cross bracing, and tie-downs. All three are ess.
in creating a safe and secure mobile home installation. ...

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Large Pier Design

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Manufactured Home Sbowing Cross Braong and Foundation

Post Back6.lled wilb Concrete

Foundations

A poured concrete fooling, reinforced with rebar, gives maximum stability.
The rebar must turn out of the footing and up into the pier. Piers can be
of poured concrete or concrete blocks reinforced with rebar; the blocks
must be filled solid with concrete. Cast threaded anchor bolts into the
top of each pier so the mobile home frame can be anchored to the
foundation. In areas with soft ground, post foundations may be able to
achieve the required foundation strength. Drive posts into the ground
down to a rock foundation, or to a depth specified by an engineer. Backfill
posts with concrete for maximum strength.

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Filling or Piers

Post Anchoring

Cross-bracing

Diagonal bracing will keep the foundation from twisting and collapsing
in a flood or high wind situation. Bracing can be achieved with 2-inch
nominal lumber bolted to the piers, or with steel rods flned through
drilled holes and fastened with nuts.

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Diagonal Braci.Dg with Wood

Diagonal Braang with Slee1 Rods

Tie-down straps

TIe.down straps are used at the base of the manufactured home and can
be tied over the top. The most common failure is pullout of the ground
anchor. For maximum pullout resistance, cast the anchor into a concrete
deadman.

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Tie Do'WIlStnlpS

Tie Components

Concrete & Deadman Anchor

Note: In order for manufactured/mobile bome owners located in Special Flood Hazard Areas to be eligible for NFIP flood insurance, thA
manufacmredlmobile bome must be able to resist floatation, collapse or lateral movement either by: L) Over the lOp or frame ties to 'l!o'-
anchors; 2.) or in accordance with the manufacturer's specifications; 3.) or in compliance with the community's flood plain management
requirements unless it is a manufactured/mobile bome on a pennanent foundation continuously insured by the NFIP on the same site since
9/30182. (Source: NFIP Standard Flood Insurance Policy, Article 6, Paragrapb H)

Protectin~ lour Homefrom Flood Damage, Re\ised 19%.lnd Edilion
fedenl Emereenc-." ~an~emenl :\~enc\"

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