If the length of a combined footing for two columns l meters apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where x̅ is the distance of centre of gravity of column loads).

RCC Structures Design
If the length of a combined footing for two columns l meters apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where x̅ is the distance of centre of gravity of column loads).

y = L - (l - x̅)

y = L/2 + (l - x̅)

y = L/2 - (l - x̅)

y = L/2 - (l + x̅)

y = L - (l - x̅)

y = L/2 + (l - x̅)

y = L/2 - (l - x̅)

y = L/2 - (l + x̅)

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RCC Structures Design
According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than

20 cm

75 cm

40 cm

30 cm

20 cm

75 cm

40 cm

30 cm

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RCC Structures Design
On an absolutely rigid foundation base, the pressure will

Be more at the edges of the foundation

Be uniform

Be zero at the centre of the foundation

Not be uniform

Be more at the edges of the foundation

Be uniform

Be zero at the centre of the foundation

Not be uniform

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RCC Structures Design
A pre-stressed concrete member is preferred because

Large size of long beams carrying large shear force need not be adopted

Removal of cracks in the members due to shrinkage

Its dimensions are not decided from the diagonal tensile stress

All listed here

Large size of long beams carrying large shear force need not be adopted

Removal of cracks in the members due to shrinkage

Its dimensions are not decided from the diagonal tensile stress

All listed here

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RCC Structures Design
If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is

P/2A

P/A

2A/P

A/P

P/2A

P/A

2A/P

A/P

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RCC Structures Design
In a singly reinforced beam, the effective depth is measured from its compression edge to

Longitudinal central axis

Tensile edge

Tensile reinforcement

Neutral axis of the beam

Longitudinal central axis

Tensile edge

Tensile reinforcement

Neutral axis of the beam

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RCC Structures Design

RCC Structures Design According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than

RCC Structures Design On an absolutely rigid foundation base, the pressure will

RCC Structures Design A pre-stressed concrete member is preferred because

RCC Structures Design If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is

RCC Structures Design In a singly reinforced beam, the effective depth is measured from its compression edge to

RCC Structures Design
According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than

RCC Structures Design
On an absolutely rigid foundation base, the pressure will

RCC Structures Design
A pre-stressed concrete member is preferred because

RCC Structures Design
If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is

RCC Structures Design
In a singly reinforced beam, the effective depth is measured from its compression edge to