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Foundation size for 1, 2, 3, 4 and 5 storey building

Foundation size for 1, 2, 3, 4 and 5 storey building, hi guys in this article you know about foundation size for 1 storey (G+0) building | foundation size for 2 storey (G+1) building | Foundation size for 3 storey (G+2) building | Foundation size for 4 storey (G+3) building | Foundation size for 5 storey (G+4) building.

Foundation size for 1, 2, 3, 4 and 5 storey building
Foundation size for 1, 2, 3, 4 and 5 storey building

Size of foundation depends on various factor bearing capacity of soil, number of columns, total dead and live load and other loading and structural aspects of construction. Without knowing bearing capacity of soil and load coming over it, we can only predicting the size of foundation.

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Depth of foundation depends on soil condition, type of soil, hard starta beneath the ground level and safe bearing capacity of soil, type of construction like wall, live load and dead load. When all coming load on footing will be 300KN/floor and safe bearing capacity (SBC) is 250KN/m2, generally Foundation size 1.5m×1.5m to 2m×2m is applicable.

Depth of Foundation for footing ranging between 3 feet to 9 feet deep beneath the ground level, depending on soil types and load calculation. Foundation size of footing for residential building depth should be not less than 3 feet on strong bearing capacity of soil like gravel and sand.

Width and depth of foundation calculated on the basis of safe bearing capacity of soil, type of soil and all the live and dead load coming on it,without knowing bearing capacity of soil and load coming over it, we can only predicting the size of footing. Actual size is calculated by structural engineer by measuring the safe bearing capacity of soil and all the load coming on it. In this article we use various Thumb Rule for column footing size for 1 to 5 storey building.

Footings are an important part of foundation construction. They are typically made of concrete with rebar reinforcement that has been poured into an excavated trench. The purpose of footings is to support the foundation and prevent settling and it safely transfer the all coming load to bed of soil.

In geotechnical engineering, bearing capacity is the capacity of soil to support the loads applied to the footing. The bearing capacity of soil is the maximum average contact pressure between the foundation and the soil which should not produce shear failure in the soil.

For the stability of your building concrete structure, you would like to have soil that has good bearing capacity. Gravel and sand are the soils with higher bearing capacity while silts and clays typically have lower capacities.

Foundation size for 1, 2, 3, 4 and 5 storey building

Size of foundation for footing depends on various factor bearing capacity of soil, number of columns, total dead and live load and other loading and structural aspects of construction. Without knowing bearing capacity of soil and load coming over it, we can only predicting the size of foundation for footing by thumb rule.

Foundation size for 1 storey (G+0) building:- for 1 storey (G+0) house or in simple ground floor building, general thumb rule, using standard 9″ thick walls, we recommended minimum size of Foundation for footing should be 3.5’× 3.5’× 3.5′ (1m x 1m×1m) in respect to length, breadth and depth. This is normal, average, standard size of foundation for isolated footing of shallow foundation in gravel and sand soil with higher bearing capacity. This average size of footing width dimensions is 3.5’× 3.5′ and depth of footing should be minimum 3.5′ provided with Mesh bar of [email protected]″C/C of Fe500 Steel with m20 grade of concrete and minimum column size 9″×9″.

Foundation size for 2 storey (G+1) building:- for 2 storey (G+1) house or in simple two floor building, general thumb rule, using standard 9″ thick walls, we recommended minimum size of Foundation for footing should be 4’× 4’× 4′ (1.2m x 1.2m×1.2m) in respect to length, breadth and depth. This is normal, average, standard size of foundation for isolated footing of shallow foundation in gravel and sand soil with higher bearing capacity. This average size of footing width dimensions is 4’× 4′ and depth of footing should be minimum 4′ provided with Mesh bar of [email protected]″C/C of Fe500 Steel with m20 grade of concrete and minimum column size 9″×12″.

Foundation size for 3 storey (G+2) building:- for 3 storey (G+2) house or in simple three floor building, general thumb rule, using standard 9″ thick walls, we recommended minimum size of Foundation for footing should be 5’× 5’× 5′ (1.5m x 1.5m×1.5m) in respect to length, breadth and depth. This is normal, average, standard size of foundation for isolated footing of shallow foundation in gravel and sand soil with higher bearing capacity. This average size of footing width dimensions is 5’× 5′ and depth of footing should be minimum 5′ provided with Mesh bar of [email protected]″C/C of Fe500 Steel with m20 grade of concrete and minimum column size 12″×12″.

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Foundation size for 4 storey (G+3) building:– for 4 storey (G+3) house or in simple four floor building, general thumb rule, using standard 9″ thick walls, we recommended minimum size of Foundation for footing should be 6’× 6’× 6′ (1.8m x 1.8m×1.8m) in respect to length, breadth and depth. This is normal, average, standard size of foundation for isolated footing of shallow foundation in gravel and sand soil with higher bearing capacity. This average size of footing width dimensions is 6’× 6′ and depth of footing should be minimum 6′ provided with Mesh bar of [email protected]″C/C of Fe500 Steel with m20 grade of concrete and minimum column size 12″×15″.

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Foundation size for 5 storey (G+4) building:- for 5 storey (G+4) house or in simple five floor building, general thumb rule, using standard 9″ thick walls, we recommended minimum size of Foundation for footing should be 7’× 7’× 7′ (2.1m x 2.1m× 2.1m) in respect to length, breadth and depth. This is normal, average, standard size of foundation for isolated footing of shallow foundation in gravel and sand soil with higher bearing capacity. This average size of footing width dimensions is 7’× 7′ and depth of footing should be minimum 7′ provided with Mesh bar of [email protected]″C/C of Fe500 Steel with m20 grade of concrete and minimum column size 12″×18″.

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