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What is Heaved Pile in Pile Foundation Construction?

Have you heard piles are sometimes heaved? Is this not strange that pile can lift out without any action of uplift generated by structural members? Structural member can produce uplift due to foundation settlement of one end and uplifting another end or earthquake generated pull out force or same by the action of wind. These causes are found in regular structural distress and we used to face such phenomenon and engineers provide safety factors to neutralize these uplift forces.


Yes friends, this can happen in construction of pile foundation when a site has plastic clay in saturated condition. During driving piles into plastic clay it displace an amount of soil. The amount of soil may be as large as the volume of pile itself. Mentioning again the soil should be:

Heaved piles surrounding recently driven pile foundation
a. Plastic clay

b. Soil in saturated condition.


This displacement phenomenon results another occurrence-this is heaving action. This heaving action not only lifts out structures adjacent to this driving site but also results coming out of piles, driven previously.


Normally Foundation engineers calculate pile capacity considering both skin resistance and end bearing. This capacity is calculated summing a skin resistance in each stratum and also end resistance in the end bearing stratum. If a pile heaved out then it lifted up from its desired depth and pile capacity becomes less.


Embedment length reduction during lifting also results less skin resistance. Friends these piles that heaved out resulting less bearing resistance is called heaved pile. Dear reader please stay with this blog we are providing every answerer of what, why, how in foundation and concrete engineering.

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  4. What causes foundation Issues?

    Soil
    90 percent of base problems come from the normal conditions in the area. Our loamy, clay ground includes a high-elasticity, so it moves with changing temperature and moisture levels.
    The dirt under your house expands and contracts together with shifts between hot and cold states and through wet and dry cycles -- literally shifting your entire home.
    Your home has been designed to handle this, but over time or after a big weather event your house can move beyond its own limitations -- that is when you get foundation issues.
    Structure
    Not many homes are built equally. It is unfortunate, but a lot of base problems are caused by ignored construction standards and review requirements. Fortunately, you can fix them if you do it correctly the first time.
    Drainage
    This will harm your house base. Even with the very best landscaping, drainage and gutters, water flow changes over time and generates base issues.
    Broken pipes and foundation problems go awry in the San Antonio region. Your leaky pipes can lead to dirt to expand and contract under your house or erode away -- leading to a shifting home also check brown foundation repair Dallas.
    Other problems with your foundation can certainly cause pipes to break and create the original damage worse.
    Many homeowners that employed concrete piers as a seemingly cheaper foundation repair option come for us to repair their failed fix later -- making the second fix more difficult and costly.
    Concrete does not solve your foundation problems since it doesn't get to the bedrock to offer real support and is fails for several reasons.
    Grading Issues
    It is uncommon for any great deal to be 100% flat before new home construction. To fix the grade, soil is used to level your own lot and failure to streamlined or treat this soil correctly causes erosion and recession under your base -- contributing to failure and problems over time.

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