Civil Engineering: Foundation

Home » Search Foundation

Footing and foundation both are some basic terminologies used in civil engineering. But there are still some people who don’t understand the difference between them. If you are one of them then this is the topic for you. This article will give you a brief detail of the differences between footing and foundation.

A most simple explanation could be that all footings are foundations but all foundations cannot be footings. What does it mean? let’s look into each one of them one by one.

Foundation:

A foundation is a structure that connects the superstructure with the ground and transfers the load from the superstructure to the ground. There are two types of foundation i.e. shallow foundation and deep foundation.

The difference between these two types is that if the width of the foundation is greater than its depth the foundation will be a shallow foundation. But if the said condition is not true that means it’s a deep foundation.

Footing:

The term footing is used in conjunction with shallow foundations commonly. A footing is a foundation unit constructed in brickwork, masonry or concrete under the base of a wall or a column for the purpose of distributing the load over a large area.

A Footing is the part of foundation or a foundation unit in brick work masonry or concrete under the base of walls or columns for the purpose of distributing the load over a large area. A Footing or a shallow foundation is place immediately below the lower part of super structure which transfers the load directly to the soil.

A or the footing is at the base of the foundation. Usually but not always 3 times the width of the wall. This just make a base for the wall to sit on so that it doesn't push into the ground. Without it, the wall would act as a knife and with the weight of the structure, cut into the ground.

Difference between mat foundation and isolated footing?

Isolated footings are constructed individually & Mat foundation is making of mat and connecting all footings with this mat

What is the difference between association and foundation?

An association is an organization that has a common interest or activity. A foundation is an organization established by donation of funds for future causes.

What is the difference between pile foundation and pier foundation?

A pile is more slender than a pier. They are essentially the same thing. The cut off diameter or cross section size for when a pile becomes a pier is unknown but the pile is far better the pier because the total mass is divided equally between each pile used in pile foundation and the foundation is very much stable.

What is the difference between a pile foundation and an ordinary foundation?

Pile foundations are typically much deeper than they are wide. This means that their ability to resist loads is mainly derived from the vertical friction of the side of the pile against the soil (skin friction). However it should be noted that a number of closely spaced piles will act as a group and as such can also have significant resistance to loads by end bearing.

Regular foundations rely on the bearing pressure between the soil and the underside of the foundation, they are cheaper and more common. Piles will be used when greater forces are needed to be transferred to the ground over a smaller area, such as with high rise buildings and those in densely built up areas where land comes at a premium and ground movements will affect neighboring buildings.

A pile can be thought of as analogous to a tent peg whereas an ordinary foundation is like a flagstone.

SNRN 2/13/2021 Admin Bandung Indonesia

Difference between foundation and footing

Footing and foundation both are some basic terminologies used in civil engineering. But there are still some people who don’t understand the difference...

Design of Foundations

The two major and some other requirements of foundation structures are explained in Lesson 28. Different types of shallow and deep foundations are...

Basic Civil Engineering

As we all know that civil engineering can’t be isolated from other engineering fields. For the betterment of human life civil engineering require...

Pile arrangement in group

The Guide provides an overview of load types considered and how these loads are appropriately combined to design pile caps, followed by an overview of...

There are many texts on pile foundations. Generally, experience shows us that
undergraduates find most of these texts complicated and difficult to
understand.
This guide has extracted the main points and puts together the whole process of
pile foundation design in a student friendly manner.
The guide is presented in two versions: text-version (compendium from) and
this web-version that can be accessed via internet or intranet and can be used as
a supplementary self-assisting students guide.
Pile foundations are the part of a structure used to carry and transfer the load of
the structure to the bearing ground located at some depth below ground
surface. The main components of the foundation are the pile cap and the piles.
Piles are long and slender members which transfer the load to deeper soil or
rock of high bearing capacity avoiding shallow soil of low bearing capacity The
main types of materials used for piles are Wood, steel and concrete. Piles made
from these materials are driven, drilled or jacked into the ground and connected
to pile caps. Depending upon type of soil, pile material and load transmitting
characteristic piles are classified accordingly. In the following chapter we learn
about, classifications, functions and pros and cons of piles.

Function of piles

As with other types of foundations, the purpose of a pile foundations is:
to transmit a foundation load to a solid ground
to resist vertical, lateral and uplift load
A structure can be founded on piles if the soil immediately beneath its base
does not have adequate bearing capacity. If the results of site investigation
show that the shallow soil is unstable and weak or if the magnitude of the
estimated settlement is not acceptable a pile foundation may become
considered. Further, a cost estimate may indicate that a pile foundation may be
cheaper than any other compared ground improvement costs.
In the cases of heavy constructions, it is likely that the bearing capacity of the
shallow soil will not be satisfactory, and the construction should be built on
pile foundations. Piles can also be used in normal ground conditions to resist
horizontal loads. Piles are a convenient method of foundation for works over
water, such as jetties or bridge piers.

End bearing piles

These piles transfer their load on to a firm stratum located at a considerable
depth below the base of the structure and they derive most of their carrying
capacity from the penetration resistance of the soil at the toe of the pile (see
figure 1.1). The pile behaves as an ordinary column and should be designed as
such. Even in weak soil a pile will not fail by buckling and this effect need only
be considered if part of the pile is unsupported, i.e. if it is in either air or water.
Load is transmitted to the soil through friction or cohesion. But sometimes, the
soil surrounding the pile may adhere to the surface of the pile and causes
"Negative Skin Friction" on the pile. This, sometimes have considerable effect
on the capacity of the pile. Negative skin friction is caused by the drainage of
the ground water and consolidation of the soil. The founding depth of the pile is
influenced by the results of the site investigate on and soil test.

Please download attachment file to see details Pile Foundation Design Guide for student
Download from Google Drive
File Format : PDF
File Size : 1.24 MB

SNRN 4/07/2020 Admin Bandung Indonesia