If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is

RCC Structures Design
If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is

Kx (1 + x/l) + bw

All listed here

Kx (1 - x/l) + bw

K/x (1 + x/d) + bw

Kx (1 + x/l) + bw

All listed here

Kx (1 - x/l) + bw

K/x (1 + x/d) + bw

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RCC Structures Design
For stairs spanning horizontally, the minimum waist provided is

12 cm

4 cm

6 cm

8 cm

12 cm

4 cm

6 cm

8 cm

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RCC Structures Design
If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

M = pb (b + a)/8

M = pb (c - a)/4

M = pb (b + a)/8

M = pb (b - a)²/8

M = pb (b - a)²/4

M = pb (b + a)/8

M = pb (c - a)/4

M = pb (b + a)/8

M = pb (b - a)²/8

M = pb (b - a)²/4

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RCC Structures Design
Steel beam theory is used for

Steel beams encased in concrete

Beams if shear exceeds 4 times allowable shear stress

Doubly reinforced beams ignoring compressive stress in concrete

Design of simple steel beams

Steel beams encased in concrete

Beams if shear exceeds 4 times allowable shear stress

Doubly reinforced beams ignoring compressive stress in concrete

Design of simple steel beams

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RCC Structures Design
According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is

Four-fifth of the width of the slab

Three-fourth of the width of the slab

Half of the width of the slab

Two-third of the width of the slab

Four-fifth of the width of the slab

Three-fourth of the width of the slab

Half of the width of the slab

Two-third of the width of the slab

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RCC Structures Design
In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good

mc/t = (d - n)/t

(t + c)/n = (d + n)/n

mc/t = n/(d - n)

(m + c)/t = n/(d + n)

mc/t = (d - n)/t

(t + c)/n = (d + n)/n

mc/t = n/(d - n)

(m + c)/t = n/(d + n)

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RCC Structures Design

RCC Structures Design For stairs spanning horizontally, the minimum waist provided is

RCC Structures Design If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

RCC Structures Design Steel beam theory is used for

RCC Structures Design According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is

RCC Structures Design In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good

RCC Structures Design
For stairs spanning horizontally, the minimum waist provided is

RCC Structures Design
If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

RCC Structures Design
Steel beam theory is used for

RCC Structures Design
According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is

RCC Structures Design
In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good