Civil Engineering - Building Construction - Discussion

A foundation is a non-governmental entity that is established as a nonprofit corporation or a charitable trust, with a principal purpose of making grants to unrelated organizations, institutions, or individuals for scientific, educational, cultural, religious, or other charitable purposes. This broad definition encompasses two foundation types: private foundations and grantmaking public charities.

A private foundation derives its money from a family, an individual, or a corporation. An example of a private foundation is the Ford Foundation.

In contrast, a grantmaking public charity (sometimes referred to as a "public foundation") derives its support from diverse sources, which may include foundations, individuals, and government agencies. An example of a grantmaking public charity is the Ms. Foundation for Women. Most community foundations are also grantmaking public charities.

Strip or Isolated : for each column, one foundation(i.e; 1 - 1).
Combined : for two or more columns, one foundation(>=2-1).
Raft or Mat : for two or more columns, one foundation(>=2-1).
Strap : between two footings one beam is provided.

Difference b/w combined and raft is:

If the area of excavated soil >= 50% of total area of construction site,
Then go for "RAFT" footing else combined footing.

When two isolated footings are combined by a beam with a view to sharing the loads of both the columns by the footings, the footing is known as Strap footing?

These footings are required if the loads are heavy on columns and the areas of foundation are not overlapping with each other.

I am doing a take off on a residential building, I have measured the E, I beams and now moving onto the slab. Are the I beams generally above ground so I do not have to allow for this concrete again? Please advise.

The beam which is connected to the two isolated footing in between for sharing the maximum load coming from one column and distributing that load between two isolated footing is known as strap footing.

For every structure or construction basically we need foundation.

It is a substructure i.e; it lies below the ground level.

Foundation can transfer the superstructure loads to the ground.

The foundation in which a cantilever beam is provided to join two footings, is known strap footing.

Because strap foundation is between two footing one beam is provided.

When excavated area for isolated and combined footing is is greater than 50% of construction area of building than what type of footing to be used. Anyone please tell me.

How does strap footing look like is it the only footing that can be used to bear or carry the load of a cantilever?

Strap : between two footings one beam is provided.
Foundation can transfer the superstructure loads to the ground.