Using a helical anchor to stabilize a settled foundation

Structure · Problems · printed page 36 (PDF page 37)

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Book index entries

Anchors – Helical Helical Anchors Footings – and Foundations Foundation – and Footing

Text in the illustration

helical anchor is screwed into the ground until there is enough torque resistance to indicate sufficient bearing strength
the anchor is then secured to the footing/foundation with a special bracket
depending on how localized the problem is, several anchors may be required
differential settlement
sound soil
foundation wall
footing
bracket
helical anchor
unstable soil

Generated explanation

The illustration shows differential settlement at one side of a house, with a crack through the foundation wall and stepped cracking in the brick wall above. A helical anchor is installed beside the settled footing and extends through unstable soil into sound soil. An enlarged detail shows a bracket connecting the footing/foundation to the anchor shaft. Annotations explain that the anchor is screwed into the ground until torque resistance indicates sufficient bearing strength, then secured to the foundation with a special bracket. Several anchors may be needed depending on how localized the settlement is.

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