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Foundation

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  1. Asked: April 25, 2021In: Foundation

    What is the application of grillage foundation?

    Fasi Ur Rahman

    Fasi Ur Rahman

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    Fasi Ur Rahman
    Added an answer on April 25, 2021 at 4:35 pm

     The application of grillage foundation are: This type of foundation is appropriate to construct for buildings of light construction materials on weak soils. This foundation is needed to save up to 30%. Don’t permit to build the other type of foundation in areas where soil characteristics and conditRead more

     The application of grillage foundation are:

    1. This type of foundation is appropriate to construct for buildings of light construction materials on weak soils.
    2. This foundation is needed to save up to 30%.
    3. Don’t permit to build the other type of foundation in areas where soil characteristics and conditions of their occurrence weak.
    4. The load must be anticipated to be relatively small for construction.
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  2. Asked: October 30, 2017In: Foundation

    What is Timbering of Foundation Trenches?

    nikeetasharma

    nikeetasharma

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    nikeetasharma Guru
    Added an answer on December 18, 2020 at 7:10 pm

    Timbering is a method of providing temporary support to the side of the trench and is sometimes called planking and strutting. It is a method to prevent trench side soil against the collapse. If the soil is not hard then during deep excavation the sides of the trench collapse. The sides of the trencRead more

    Timbering is a method of providing temporary support to the side of the trench and is sometimes called planking and strutting. It is a method to prevent trench side soil against the collapse. If the soil is not hard then during deep excavation the sides of the trench collapse.

    The sides of the trench are timbering to prevent collapse.

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  3. Asked: September 25, 2020In: Foundation

    What is meant by stability of slope ? How to calculate slope stability?

    aviratdhodare

    aviratdhodare

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    aviratdhodare
    Added an answer on October 15, 2020 at 9:44 pm

    Stability of slope comforms the ability of soil to withstand surcharge load and self weight of the soil mass in a pre determined slope . This is calculated as pet soil properties and slip circle method may be adopted. The concept has major applications in soil mechanics and material retaining structRead more

    Stability of slope comforms the ability of soil to withstand surcharge load and self weight of the soil mass in a pre determined slope . This is calculated as pet soil properties and slip circle method may be adopted.

    The concept has major applications in soil mechanics and material retaining structures like silos. The calculations basically estimate stability of sloping contours of a heap of stacked material. Any basic text in SMFE will familiarise you with the concepts and calculations.

    The main factors involved are relative density of the material, inter-granular friction, inter-granular cohesion, wetness and water table, and formation of a slip surface apart from static and dynamic loads affecting stability of the slope under consideration.

    A proper stability analysis and executing suitable corrective measures is vital to ensure continued serviceability of transportation infrastructures, and safety of water impounding structures, silos etc.,.

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  4. Asked: September 28, 2020In: Foundation

    What are the construction practices which are used to avoid differential settlement in foundation?

    AdityaBhandakkar

    AdityaBhandakkar

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    AdityaBhandakkar User
    Added an answer on October 3, 2020 at 11:27 am
    What is the application of grillage foundation?

    Hi, this is a more crucial and common issue as a civil engineer. Foundation settlement must be prevented by analysis carefully of the soil before the building Foundation constructed. Non-expansive is the best soil for building foundation. It simply means that it contains a little clay or silt contenRead more

    Hi, this is a more crucial and common issue as a civil engineer.

    Foundation settlement must be prevented by analysis carefully of the soil before the building Foundation constructed. Non-expansive is the best soil for building foundation. It simply means that it contains a little clay or silt content. In an ideal condition, the building site should be native soil nature than an artificial field soil from outside.

    Before construction, ensure to consult a civil engineer for determining the various factors of load-bearing soil at that place. If any necessary changes of the soil or in the foundation constructed method it determined early.

    because many other cases the solution would be a simple or just by extending the foundation up to the hard strata from poor soil.

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  5. Asked: September 22, 2020In: Foundation

    In which type of soil can we use pile foundation?

    AdityaBhandakkar

    AdityaBhandakkar

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    AdityaBhandakkar User
    Added an answer on September 23, 2020 at 3:25 pm

    Hi, To understand which type of soil is used for pile Foundation first you must need to know what is pile Foundation. Pile Foundation is a Deep Foundation provided when a hard stratum is at great depth. If the soil is not taking the load then piles must be driven into the soil up to 3 to 4 m depth.Read more

    Hi, To understand which type of soil is used for pile Foundation first you must need to know what is pile Foundation.

    Pile Foundation is a Deep Foundation provided when a hard stratum is at great depth. If the soil is not taking the load then piles must be driven into the soil up to 3 to 4 m depth. Piles may be made up of concrete or steel.

    So, pile Foundation is used for soil with less bearing capacity. When a hard rock stratum of soil is found at reasonable depth then pile Foundation should be provided. The soil about the pet rock must support skin friction resistance.

    Pile Foundation is provided for,

    • If horizontal forces are present
    • A week soil is present
    • If soil is expensive in nature and has a soundness property.
    • The location has Chances of soil erosion.
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  6. Asked: September 22, 2020In: Foundation

    Foundation appears to move up or down

    Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner
    Added an answer on September 23, 2020 at 3:06 pm

    Hi there! I'd like to point it out that if foundation movement doesn't necessarily mean repair is needed, it doesn't necessarily mean that repair is not needed. Does it? Foundations undergo differential or non-differential settlements. Non-differential settlement is not such a big cause of worry, buRead more

    Hi there!

    I’d like to point it out that if foundation movement doesn’t necessarily mean repair is needed, it doesn’t necessarily mean that repair is not needed. Does it?

    Foundations undergo differential or non-differential settlements. Non-differential settlement is not such a big cause of worry, but differential settlement can take your foundations beyond repairability in a few years’ time. They’d need to be completely replaced, which could be very costly. Also, it’ll need underpinning which is not very suitable in some kinds of soil.

    Apart from this, there’s another question that how much is your foundation moving. If it’s a lot then it’s a no brainier. You need to get it repaired. Your country’s codes for Settlement calculation in buildings and foundation design will help you out in this. You can look them up.

    Also, your foundation may either bulge or tilt. That factor also plays a role in deciding whether it needs to be repaired. Lastly, look up if there is a crack developing in the foundation if you could. If it’s a vertical crack, it’s an indication that vertical movents are causing serious problems. Even if there are horizontal cracks, it’s better to get the foundation repaired.

    PS : It’ll be best if you took an experienced foundation engineer to look into the matter.

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  7. Asked: August 17, 2020In: Foundation

    Why is the main reinforcement provided on the longer side of raft footing?

    Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner
    Added an answer on August 18, 2020 at 4:03 pm

    You mean to say longer span. The main reinforcement is provided on the longer span because the longest span is in a more critical situation and has to bear a higher bending moment. This is because the uplift pressure from the soil below will be equal in all locations, but the moment developed at theRead more

    You mean to say longer span. The main reinforcement is provided on the longer span because the longest span is in a more critical situation and has to bear a higher bending moment. This is because the uplift pressure from the soil below will be equal in all locations, but the moment developed at the longer span will be higher because of a long arm. It’s a uniformly distributed load, and so it produces a larger moment on a longer beam. Hence, the main reinforcement is put in a longer span.

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  8. Asked: May 14, 2020In: Foundation

    How to Inspect and Monitor Chemical Jet Grouting Process?

    AdityaBhandakkar

    AdityaBhandakkar

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    AdityaBhandakkar User
    Added an answer on August 1, 2020 at 10:36 pm

    Jet grouting is a soil stabilisation method involves the injection of grouting fluid into subsoil under high pressure and velocity. Three grouting techniques are available Single - water + cement Double- Air + grout Triple fluid system- water+air+grout Adopt according to your projects For a detailedRead more

    Jet grouting is a soil stabilisation method involves the injection of grouting fluid into subsoil under high pressure and velocity.

    Three grouting techniques are available

    1. Single – water + cement
    2. Double– Air + grout
    3. Triple fluid system– water+air+grout

    Adopt according to your projects

    For a detailed description refer below  link,

    Jet Grouting -Procedure, Applications and Advantages for Soil Stabilization

    Follow the methods for inspection of chemical jet grouting.

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