Geotechnical Engineering

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aviratdhodare
aviratdhodare

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Is it possible to obtain some data on factors on which seepage in dams depends?          

  1. AdityaBhandakkar

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    Absolutely Yes, factors of seepage are very important to determine before the construction of a dam or even after the construction of the dam for maintenance work. Electrical resistivity method is used to determine the amount of seepage and depth of seepage. As a civil engineer, it's our responsibilRead more

    Absolutely Yes, factors of seepage are very important to determine before the construction of a dam or even after the construction of the dam for maintenance work.

    Electrical resistivity method is used to determine the amount of seepage and depth of seepage.

    As a civil engineer, it’s our responsibility to provide higher safety.

    Seepage under the embankment is very much dangerous as compared to concrete dams because embankments are built on a very soft material which is easily scoured and it is very vulnerable for the influence of water.

    On other side concrete dam, is built on hard strata and even the defective dam which not the endangered by passing of water from the underside.

    Following are the methods for controlling  seepage

    1. Providing drainage
    2. By reducing the seepage with some proper methods.
    3. Largely use of filters for preventing the piping and heave
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DevilAVRT
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Explain the construction & use of New Mark’s influence chart?

  1. Suyogmuralkar

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    Hi devilart, This method is used to compute the vertical and horizontal stresses of any shape ,irregular geometry below any point outside or inside The chart as shown in the above figure essentially consists of n no. of radial lines and m no. of concentric circles.   To find out vertical stressRead more

    Hi devilart, This method is used to compute the vertical and horizontal stresses of any shape ,irregular geometry below any point outside or inside

    The chart as shown in the above figure essentially consists of n no. of radial lines and m no. of concentric circles.

     

    To find out vertical stress at any point below or outside the loaded area, Plan of the loaded area is drawn such that depth Z at which stress is being computed equals the length AB as shown on

    N = No. of blocks. Bina Nusantara.

    Further, the plan is placed over influence chart such that the point below which stress is required coincides with the center of chart Then count the number of influence area (N) covered by the plan

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nikeetasharma
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How can Artificial Intelligence be used in Geotechnical Engineering?

  1. AdityaBhandakkar

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    This answer was edited.

    Hi, Geotechnical engineering deals with materials (e.g., soil and rock) that, by their very nature, exhibit varied and behavior due to the physical processes associated with the formation of these materials. Modeling such materials' behavior is complicated and usually beyond the ability of most tradRead more

    Hi,

    Geotechnical engineering deals with materials (e.g., soil and rock) that, by their very nature, exhibit varied and behavior due to the physical processes associated with the formation of these materials. Modeling such materials’ behavior is complicated and usually beyond the ability of most traditional forms of physically-based engineering methods. Artificial intelligence (AI) is becoming more popular and particularly amenable to modeling most geotechnical engineering materials’ complex behavior because it has demonstrated superior predictive ability compared to traditional methods. Over the last decade, AI has been applied successfully to virtually every problem in geotechnical engineering. However, despite this success, AI techniques are still facing classical opposition due to some inherent reasons such as lack of transparency, knowledge extraction, and model uncertainty, which will discuss in detail in this chapter. Among the available AI, techniques are artificial neural networks (ANNs), genetic programming (GP), evolutionary polynomial regression (EPR), support vector machines, M5 model trees, and K-nearest neighbors (Elshorbagy et al.,2010). This chapter will focus on three AI techniques, including ANNs, GP, and EPR. 

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Geolink
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What are the soil tests required for a 3 storey building and the standards for each test?

  1. AdityaBhandakkar

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    Investigation of soil depends upon the type of soil and its topographic condition but not to the number of storeys. For a three-storey building, the soil must be stable with good bearing capacity and does not show any settlement in the previous loading. The following are the tests performed on the sRead more

    Investigation of soil depends upon the type of soil and its topographic condition but not to the number of storeys.

    For a three-storey building, the soil must be stable with good bearing capacity and does not show any settlement in the previous loading.

    The following are the tests performed on the soil to check its geotechnical properties during the construction of any structure; it may be three storeys or more.

    1. Moisture content of soil determined by oven drying method, calcium carbide method torsion balance method, pycnometer method, radiation method, alcohol method and sand bath method.
    2. Test of specific gravity: it is the ratio of the density of soil to the density of water.
    3. Test of Dry Density: it depends upon the value of void ratio and a specific gravity of soil. This test is used to determine the soil as a medium dense, loose and Dense.
    4. Test to find atterberg limit: three types of the limit are there that is the liquid limit, plastic limit and shrinkage limit.
    5. Compaction test on the soil by proctors method.
    6. Bearing capacity value of soil.
    7. Penetration test on soil
    8. Share test on soil: it is performed by the direct shear test method, triaxial compression test, unconfined shear test, Vane shear test.

    Hope you get the answer.

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Dhanya
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What is the bearing capacity of soil? How can we calculate it?

  1. CB Sowmya

    CB Sowmya

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    With the previous answer, I would like to add the following. Bearing capacity plays a major role in the foundation design of a structure. Bearing capacity (kN/sq.m) is the maximum load that the soil can take per unit area without failure, displacement, or yielding. Bearing capacity depends on the soRead more

    With the previous answer, I would like to add the following.

    Bearing capacity plays a major role in the foundation design of a structure. Bearing capacity (kN/sq.m) is the maximum load that the soil can take per unit area without failure, displacement, or yielding. Bearing capacity depends on the soils structure, density, permeability, porosity, and shear strength. Mostly, based on the bearing capacity, we arrive at the type and dimensions on the footing,

    The tests have already been included in the answer by Vivek Patel.

    To know more about, bearing capacity of soils,

    https://test.theconstructor.org/geotechnical/bearing-capacity-of-soil-calculation/11996/

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aviratdhodare
aviratdhodare

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What is an Outcrop in the Rocks? What is its significance in civil engineering?

  1. nikeetasharma

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    Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulderRead more

    Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulder fields of Blackrock.

    Most civil engineering projects involve some excavation of soils and rocks, or involve loading the Earth by building on it. In some cases, the excavated rocks may be used as constructional material, and in others, rocks may form a major part of the finished product, such as a motorway cutting or the site f or a reservoir. The feasibility, the planning and design, the construction and costing, and the safety of a project may depend critically on the geological conditions where the construction will take place. This is especially the case in extended ‘greenfield’ sites, where the area affected by the project stretches for kilometres, across comparatively undeveloped ground. Examples include the Channel Tunnel project and the construction of motorways. In a section of the M9 motorway linking Edinburgh and Stirling that crosses abandoned oil-shale workings, realignment of the road, on the advice of government geologists, led to a substantial saving. In modest projects, or in those involving the redevelopment of a limited site, the demands on the geological knowledge of the engineer or the need for geological advice will be less, but are never negligible. Site investigation by boring and by testing samples may be an adequate preliminary to construction in such cases.

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andanr123
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What is swell pressure test of soil and it’s laboratory procedure?

  1. Neenu S K

    Neenu S K

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    Neenu S K EDITOR

    The objective of a swelling pressure test on soil is to determine the swelling pressure of expansive soil when it is not allowed to undergo any volume change. The volume change is arrested or the soil is not allowed to swell in order to test this. The test determines the intrinsic swelling pressureRead more

    The objective of a swelling pressure test on soil is to determine the swelling pressure of expansive soil when it is not allowed to undergo any volume change. The volume change is arrested or the soil is not allowed to swell in order to test this.

    The test determines the intrinsic swelling pressure of the expansive soil. The test is conducted on a consolidometer. More details are explained in IS 2720(Part 41):1977.

    The swelling pressure is dependent on the:

    • Clay Content in the soil
    • Moisture content
    • Stress history
    • Drying and wetting cycles of soil
    • The nature of the pore fluid
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vivek gami
vivek gami

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Which are the factor that affects the Permeability of Soil?

  1. AdityaBhandakkar

    AdityaBhandakkar

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    Permeability of soil is an important property of soil study as a civil engineering point of view. Permeability of a soil is the property to allow water to pass from a series of pores. Following are some factors which affect the permeability Shape and size of the soil particles Temperature and climatRead more

    Permeability of soil is an important property of soil study as a civil engineering point of view.

    Permeability of a soil is the property to allow water to pass from a series of pores.

    Following are some factors which affect the permeability

    1. Shape and size of the soil particles
    2. Temperature and climatic conditions
    3. Degree of saturation of soil
    4. The specific surface area of the particles present in the soil
    5. Void ratio of soil
    6. Properties of water absorption
    7. Nature of soil
    8. Mechanical properties of soil
    9. Characteristics of expansion and contraction

    But I recommend you to read details about all the above properties from the article:

    https://test.theconstructor.org/geotechnical/factors-affecting-soil-permeability/29563/

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