A structure need a foundation that supports it. If the structure is built on a soil that has bearing capacity which can withstand the weight of the whole structure, then you can design the foundation on footings alone. But if the soil is WEAK, you need piles to penetrate further the soil to have greater bearing strength.
Suppose a number of columns in a row are to be supported on a soil of such low bearing strength, that separate bases if provided would overlap,a practical solution would be to provide a column footing to support all the columns of the row. such a footing is called a "STRIP FOOTING"
The footing lies on the ground around the base of the structure. The Foundation cn go way below with pilings deep into the ground.I can say that the footing is the part of foundation which transfers the load directly to the soil and foundationis the part of structure below the plinth level including the footing while footing is the part which is below the ground level.
It most likely depends on your soil composition and the water table in your area.
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.
There are some basic design principle that need to be applied when calculating the footing of a design in sandy soil. You should generally widen the footing for softer soil to allow more room for the bearing area. Since the cantilevered retaining wall is 4 foot then the footing should be 8 foot.
A structure need a foundation that supports it. If the structure is built on a soil that has bearing capacity which can withstand the weight of the whole structure, then you can design the foundation on footings alone. But if the soil is WEAK, you need piles to penetrate further the soil to have greater bearing strength.
Bearing capacity of soil= Load carried by soil / unit Area Definition : The safly retained capacity by soil is termed as SBC(Safe Bearing Capacity) of soil. While you design a footing , it is the main factor to consider . To calculate the area of footing Area of footing = load/ SBC
A Combined footing is a long footing supporting two or more columns in one row. While a Mat or Raft foundation is a large footing, usually supporting several columns in two or more rows.
Suppose a number of columns in a row are to be supported on a soil of such low bearing strength, that separate bases if provided would overlap,a practical solution would be to provide a column footing to support all the columns of the row. such a footing is called a "STRIP FOOTING"
The footing lies on the ground around the base of the structure. The Foundation cn go way below with pilings deep into the ground.I can say that the footing is the part of foundation which transfers the load directly to the soil and foundationis the part of structure below the plinth level including the footing while footing is the part which is below the ground level.
pile is a type of footing,its necessary where the soil strength is low quality,AND piller is a vertical structure which carrying load from slab and pass to footing,its also known as COLUMN.
It most likely depends on your soil composition and the water table in your area.
a10kp axial loads is applied to a short wooden post which is supported by a concrete footing resting on undistributed.determine a)the maximum beering stress on the concrete footing. b)the size of footing for which the avareg bearing stress on the soil is 20kpsi
Isolated square footingStrip footingCombined footingStrap footing
Isolated footings are constructed invidually & Mat foundation is making of mat and connecting all footings with this mat
A pedestal in a footing is a portion of the footing that is designed to support a concentrated load, such as a column or pier. It typically has a smaller cross-sectional area than the main footing and is used to distribute the load from the structural element to the larger footing below. The pedestal helps to prevent excessive settlement or bearing capacity failure at the column support point.