File Name: difference between shallow and deep foundation .zip
- Difference between Shallow and Deep Foundation
- Difference Between Shallow And Deep Foundation Pdf
- Shallow and Deep Foundations under Fault Rupture Or Strong Seismic Shaking
Before deciding the type of foundation for structures, it is very important that one must understand the difference between shallow and deep foundation. Foundation for a structure is generally classified in two broad classes based on the depth i. Depth is an important factor in foundation.
Foundation is one of the most important parts of the structure. It transfers the total loads from the structure to the soil and provides stability to the structure. Foundation can be primarily classified into two parts, such as Shallow Foundation and Deep Foundation. They are basically classified depending on the depth at which the foundation is provided. Shallow foundation and deep foundation have several differences.
Difference between Shallow and Deep Foundation
Sorry, you do not have permission to ask a question, You must login to ask question. Become VIP Member. Do you need to remove the ads? The depth of shallow foundations are generally less than its width. A strip footing is provided for a load-bearing wall. A strip footing is also provided for a row of columns which are so closely spaced that their spread footings overlap or nearly touch each other. In such a case, it is more economical to provide a strip footing than to provide a number of spread footings in one line.
A strip footing is also known as continuous footing. A spread footing also called as isolated footing, pad footing and individual footing is provided to support an individual column. A spread footing is circular, square or rectangular slab of uniform thickness. Sometimes, it is stepped or haunched to spread the load over a large area. A combined footing supports two columns.
It is used when the two columns are so close to each other that their individual footings would overlap. A combined footing is also provided when the property line is so close to one column that a spread footing would be eccentrically loaded when kept entirely within the property line. By combining it with that of an interior column, the load is evenly distributed. A combined footing may be rectangular or trapezoidal in plan. A strap or cantilever footing consists of two isolated footings connected with a structural strap or a lever.
The strap connects the two footings such that they behave as one unit. The strap is designed as a rigid beam. The individual footings are so designed that their combined line of action passes through the resultant of the total load.
A mat or raft foundation is a large slab supporting a number of columns and walls under the entire structure or a large part of the structure. A mat is required when the allowable soil pressure is low or where the columns and walls are so close that individual footings would overlap or nearly touch each other. Mat foundations are useful in reducing the differential settlements on non-homogeneous soils or where there is a large variation in the loads on individual columns.
Sign Up Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. Have an account? Sign In Now. Free Signup or Login to continue Reading Remember Me! Don't have account, Sign Up Here. Forgot Password Lost your password? VIP Dashboard. Strip Footing 2. Spread or Isolated Footing or Individual Footing 3.
Combined Footing 4. Strap or Cantilever Footing 5. Mat or Raft Foundations. Previous article. Next article. Gopal Mishra. Related Posts.
Difference Between Shallow And Deep Foundation Pdf
Shallow and Deep Foundations under Fault Rupture Or Strong Seismic Shaking
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Following are different types of Deep Foundations used in construction :. Shallow foundations are constructed where soil layer at shallow depth is able to support the structural loads. The depth of shallow foundation is generally less than its width. It can be used where the bearing capacity of soil on which the structure is to be constructed is maximum then Shallow Foundation can be used.
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Shallow foundations are one of the most common types of foundations for buildings, retaining walls and other light structures. Spread footings are often the most inexpensive foundation solution compared with other types of foundation, such as piles and cais-sons. The basic principle in shallow foundation design is to provide a sufficiently large contact area between the footing and the soil so.
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