-- FOUNDATION FAILURE --
Proper treatment of problem soil conditions and the preparation of the foundation are extremely important to ensure a long-lasting structure that does not require excessive maintenance. Some agencies have recognized certain materials simply do not perform well, and prefer to remove and replace such soils (e.g., a state specification dictating that frost susceptible loses cannot be present in the frost penetration zone). However, in many cases, this is not the most economical or even desirable treatment (e.g., excavation may create disturbance, plus additional problems of removal and disposal).
Stabilization provides an alternate method to improve the structural support of the foundation for many of the sub grade conditions presented in the previous section. In all cases, the provision for a uniform soil relative to textural classification, moisture, and density in the upper portion of the sub grade cannot be over-emphasized. This uniformity can be achieved through soil sub-cutting or other stabilization techniques.
Stabilization may also be used to improve soil work ability, provide a weather resistant work platform, reduce swelling of expansive materials, and mitigate problems associated with frost heave. In this section, alternate stabilization methods will be reviewed, and guidance will be presented for the selection of the most appropriate method.
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A Reinforced Foundation Wall That's Rock Solid!
2. Another Wall Failure. About 16" Of The Soil Has Been Removed.
4. As You Can See The Wired Re-bar Forms Are Filled With Concrete And Leveled & Smoothed.
6. Once The Concrete is Set, The Laying of the Block Is Put Into Place.
8. The Final Cap Extends & Connects To The Existing Foundation.
1. Notice How The Soil Has Been Removed By The Homeowner. This Foundation Had Many Holes Weakening The Structural Support System For The Home.
3. Forming The Footing, Observe the Reinforced Steel Bars (Rebar) Wired Together To Form A Structure for the Next Step, Pouring The Concrete.
5. Now The Wall Forms Are Filled With Concrete, These Forms For The Walls Were Prepared In The Same Manner, A Structure Of Steel Rods Tied Together To Form A Frame.
7. Then The Cinder Blocks Are Filled With Concrete For Additional Reinforcement.