If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

RCC Structures Design
If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

WL/12 (L - D/3)²

WL/10 (L + 2D/3)²

WL/12 (L - 2D/3)²

WL/10 (L - 2D/3)²

WL/12 (L - D/3)²

WL/10 (L + 2D/3)²

WL/12 (L - 2D/3)²

WL/10 (L - 2D/3)²

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RCC Structures Design
The self-weight of the footing, is

Not considered for calculating the area of the footing

Also considered for calculating the upward pressure on footing

Both (b) and (c)

Not considered for calculating the upward pressure on footing

Not considered for calculating the area of the footing

Also considered for calculating the upward pressure on footing

Both (b) and (c)

Not considered for calculating the upward pressure on footing

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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

A/P

2A/P

P/2A

P/A

A/P

2A/P

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RCC Structures Design
To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is

0.307 L

0.407 L

0.207 L

0.107 L

0.307 L

0.407 L

0.207 L

0.107 L

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RCC Structures Design
If the size of a column is reduced above the floor, the main bars of the columns, are

Continued up

Stopped just below the floor level and separate lap bars provided

All of the listed here

Bent inward at the floor level

Continued up

Stopped just below the floor level and separate lap bars provided

All of the listed here

Bent inward at the floor level

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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/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)

y = L - (l - x̅)

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RCC Structures Design

RCC Structures Design The self-weight of the footing, is

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 To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is

RCC Structures Design If the size of a column is reduced above the floor, the main bars of the columns, are

RCC Structures Design
The self-weight of the footing, is

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
To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is

RCC Structures Design
If the size of a column is reduced above the floor, the main bars of the columns, are