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Geotechnical Engineering

Triaxial Test – Merits and Demerits of Triaxial Test

triaxial test

The triaxial test has the following merits and demerits: Merits of Triaxial Test Triaxial test has complete control over the drainage conditions. Tests can be easily conducted for all three types of drainage conditions. Pore pressure and volumetric changes are possible to be measured directly. Stress distribution is uniform on the failure ...

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Direct Shear Test – Merits and Demerits of Direct Shear Test

direct shear testing mechine

The direct shear test has the following merits and demerits as compared to the triaxial compression test. Merits of direct shear test The sample preperation is easy. The test is simple and convenient. As the thickness of the sample is relatively small, the drainage is quick and the pore pressure ...

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Frost Heave and Frost Line – How to Prevent Frost Action?

Frost Heaving and Frozen Zone

Frost Heave The water which migrates upward from the water table to the capillary fringe may freeze if the atmospheric temperature falls to the freezing point so that the ice get formed. This results in an increase in the volume of soil, because when water is converted into ice, there ...

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Helical Piles – How To Install – Advantages – When Helical Piles Are Used

helical piles under a house

Helical piles are increasingly being used for a broad range of construction applications covering dynamic industries. They are represented by steel shafts containing a series of circular low pitched steel plates. The helical plates are welded at tactical positions on the steel shafts to provide greater tension and compression bearing ...

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Pier and Beam Foundation – Advantages and Disadvantages

pier and beam foundation

Pier and beam foundation is a popular type of foundation. As the decision to choose the foundation of your building is a big one, it must be taken after considering all the options available. There are many kinds of foundation, of which, crawl space foundation, basement foundation and slab foundation are the ...

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Slab on Grade Foundation

slab on grade foundation

What is Slab on Grade Foundation You would know that one of the most important design considerations while constructing a house is its foundation. Slab on grade or ground foundation is a design of foundation that involves pouring of concrete slabs directly on the ground, meaning there is no gap between ...

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Advantages of Choosing a Crawl Space Foundation For Your New Home

crawlspace foundation

When building a house, choosing the right kind of foundation is perhaps the first decision that homeowners have to struggle with. There are many options for the right foundation depending upon the climate, the soil types, as well as, the elevation of the ground. For good reasons, crawl space foundation ...

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Pier and beam Foundation Vs Slab Foundation Comparison

slab foundation

Pier and Beam Foundations A pier foundation allows you to isolate the house off the ground. This means the house is technically decoupled from the ground as a whole. Steel studs remove the possibility of wood rot and concrete creates roughly one kilogram of CO2 for every kilogram of concrete. ...

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Slab Foundation Vs Crawl Space Foundation Vs Basement – What’s The Difference?

slab foundation

There are some confusions among civil engineering students as well as professionals on relative differences among slab foundations, crawl space foundations and basement. So we have decided to write a post on this topic. First, we will go through the basic concepts of each of the topics and then we will summarize ...

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How to Protect Natural Slopes From Continuous Erosion?

natural slope protection

What is the main issue with Continuous Erosion? The clue is in the name – it is continuous. On bare soil just one drop of rain will dislodge soil particles. If you consider this in terms of a normal rain shower then there can be significant movement in these natural ...

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Pile Foundation – How To Install Piles In A Pile Foundation

pile foundation

Pile Foundation Pile foundations can be defined as a special type of deep foundation, where piles are used to transfer the loads from the low bearing capacity soil to the high soil bearing capacity strata at depth. Pile foundations are generally used for large structures. It is also used in ...

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How To Build a Garage Foundation

garage foundation building process

Garage Foundation construction can be tricky if you do not have a general knowledge on construction and construction materials. There are specific steps that need to be taken to ensure that the garage foundation is sturdy and will hold the weight of the garage structure plus the weight of the ...

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Slab on Grade Foundation – Advantages, Disadvantages and Uses of Slab Foundations

slab foundation on grade

Slab on grade foundations are also commonly known as floating slab foundations. The foundation is formed using a mold that is set into the ground rather than digging a basement for the structure. There is no space between the ground and the poured concrete. Uses of Slab Foundations Slab foundations ...

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Two Column Footings – Basics of Combined Footing Design

combined footings - 2 column footing design

It is desirable to design combined footing so that the centroid of the footing area coincides with the resultant of the two column loads. This produces uniform bearing pressure over the entire area and forestalls a tendency for footings to tilt. In plane, such footing are rectangular, trapezoidal, or T ...

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Concrete Block Foundation – Advantages and Disadvantages of Concrete Block Foundations

concrete block foundation

Concrete block foundations are built using concrete blocks that are typically 8 inches by 16 inches. Although they do come in various sizes, this is the size that is most commonly used for foundations. The concrete blocks rest on a concrete footing that has been poured deep and wide enough ...

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4 Functions Of Pile Foundation – Why Piles Are Used

compile foundation functions

When the soil beneath the level at which a footing or raft would normally be established is too weak or too compressible to provide adequate support, the loads are transferred to more suitable material at a greater depth by means of piles or piers. The distinction between the two is ...

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Comparative Study Between Combined Footing, Strip Footing and Mat foundation

combined footings - 2 column

Combined Footings Spread footings that support more than one column or wall are known as combined footing. They can be divided into two categories: those that support two columns and those that support more than two columns. Combined Footings – Two Column Two-column combined footings are seen become necessary in 2 situations: If ...

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Spread Foundations – Types and When To Use Spread Footing Foundations

spread foundation

The horizontal outline of the most common spread footing foundation types are given. A wall footing is simply a strip of reinforced concrete, wider than the wall that distributes its pressure. Single-column footings are usually square, sometimes rectangular, and represent the simplest and most economical type. Their use under exterior columns meets with ...

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5 Common House Foundation Problems and Solutions

basement foundation crack

One of the biggest headaches that homeowners face regarding home repairs and maintenance is when the foundation of the house begins to shift or crack. There are usually simple and easy fixes for foundation problems if they are caught early enough. It is always good stewardship to check basement walls ...

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Common Methods Used For Bracing Sides of Shallow Excavations

shallow excavation techniques - bracing sides

The foundations for most structure are established below the surface of the ground. Therefore, they cannot be constructed until the soil or rock above the base level of the foundation has been excavated. Ordinarily it is not the function of the foundation engineer to select the equipment for excavating at ...

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