If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

RCC Structures Design
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

D = W (a - b)/4a²bq

D = W (a² - b²)/8a²bq

D = W (a² - b²)/4a²bq

D = W (a² - b²)/4abq

D = W (a - b)/4a²bq

D = W (a² - b²)/8a²bq

D = W (a² - b²)/4a²bq

D = W (a² - b²)/4abq

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RCC Structures Design
If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

π ft .d²/fb

(π/4). (ft .d/fb)

ft .d/4fb

(π/4). (ft .d3/fb)

π ft .d²/fb

(π/4). (ft .d/fb)

ft .d/4fb

(π/4). (ft .d3/fb)

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RCC Structures Design
If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm² and 1400 kg/cm² respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is

0.596 %

0.496 %

0.696 %

0.796 %

0.596 %

0.496 %

0.696 %

0.796 %

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RCC Structures Design
For stairs spanning l meters longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is

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RCC Structures Design
Minimum spacing between horizontal parallel reinforcement of the same size should not be less than

One diameter

2.5 diameters

3.5 diameters

3 diameters

One diameter

2.5 diameters

3.5 diameters

3 diameters

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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 - (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)

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RCC Structures Design

RCC Structures Design If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

RCC Structures Design If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

RCC Structures Design If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm² and 1400 kg/cm² respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is

RCC Structures Design For stairs spanning l meters longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is

RCC Structures Design Minimum spacing between horizontal parallel reinforcement of the same size should not be less than

RCC Structures Design
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

RCC Structures Design
If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

RCC Structures Design
If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm² and 1400 kg/cm² respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is

RCC Structures Design
For stairs spanning l meters longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is

RCC Structures Design
Minimum spacing between horizontal parallel reinforcement of the same size should not be less than