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<br />Concrete Dead Men
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<br />Figure 3.34 Concrete Deadman Anchor
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<br />Figure 3.35 Anchors in Concrete Slab
<br />
<br />Because different soils provide different hoiding
<br />strengths, the same type of anchor may not per-
<br />form uniformly in all situations, For example, a six
<br />inch diameter screw auger, which might withstand
<br />a pull of 5,000 pounds in stiff clay, may withstand
<br />only 2,500 pounds in sandy clay,
<br />The holding power of ground anchors can be
<br />determined by conducting pullout tests or by con-
<br />sulting with an anchor manufacturer who should
<br />be able to provide data on anchor capacity for the
<br />
<br />various kinds of soils anticipated, If soil conditions
<br />are such that the required degree of holding power
<br />is not attainable, or if the anchor selected cannot
<br />withstand anticipated loads, use of larger sized an,
<br />chors or additional anchors and ties will be
<br />necessary,
<br />
<br />Anchoring and Elevated Foundations-The
<br />necessity of elevating the manufactured home
<br />above the expected levels of flooding is critical.
<br />As previously discussed, elevating the manufac,
<br />tured home can be accomplished using a variety
<br />of techniques such as fill, piers, posts, or piles,
<br />Once elevated above the expected flood level, it
<br />is necessary that the manufactured home be an-
<br />chored to resist wind forces, Depending on the
<br />type of elevated foundations used, the manufac,
<br />tured home can either be anchored to the ground
<br />using devices such as- ground -anchors or an,
<br />chored directly to the elevated foundation,
<br />Pier foundl'ltion" "l'ln hAv" limiled.resistance to
<br />lateral loads, It is, therefore, important to minimize
<br />the transfer of lateral wind loads to this type of
<br />foundation, Devices independent of the founda-
<br />tions, such as ground anchors, must be used as
<br />shown in Figure 3,36,
<br />
<br />
<br />Figure 3.36 Anchoring on Pier Foundation
<br />
<br />A post or pile foundation has much greater
<br />resistance to lateral loads, and all lateral loads can
<br />be transferred directly to the foundation, The
<br />manufactured home can be anchored directly to
<br />the foundation using two basic methods, If a
<br />manufactured home is designed for over-the-top
<br />ties and frame ties, the ties can be connected
<br />directly to the elevated foundation as shown in
<br />Figure 3.37,
<br />If the manufactured home is designed for frame
<br />ties only, the I-beams can be connected directly
<br />to the horizontal beam as shown in Figure 3,38,
<br />
<br />30
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