If permissible working stresses in steel and concrete are respectively 1400 kg/cm² and 80 kg/cm² and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

RCC Structures Design
If permissible working stresses in steel and concrete are respectively 1400 kg/cm² and 80 kg/cm² and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

37 cm

38 cm

40 cm

39 cm

37 cm

38 cm

40 cm

39 cm

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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/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

WL/12 (L - D/3)²

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RCC Structures Design
Design of R.C.C. cantilever beams, is based on the resultant force at

Mid span and fixed support

Fixed end

Mid span

Free end

Mid span and fixed support

Fixed end

Mid span

Free end

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RCC Structures Design
To ensure uniform pressure distribution, the thickness of the foundation, is

Kept uniform throughout

Decreased gradually towards the edge

Increased gradually towards the edge

Kept zero at the edge

Kept uniform throughout

Decreased gradually towards the edge

Increased gradually towards the edge

Kept zero at the edge

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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

2A/P

P/A

P/2A

A/P

2A/P

P/A

P/2A

A/P

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RCC Structures Design
In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength

400 kg/cm²

100 kg/cm²

300 kg/cm²

200 kg/cm²

400 kg/cm²

100 kg/cm²

300 kg/cm²

200 kg/cm²

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RCC Structures Design

RCC Structures Design If permissible working stresses in steel and concrete are respectively 1400 kg/cm² and 80 kg/cm² and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

RCC Structures Design Design of R.C.C. cantilever beams, is based on the resultant force at

RCC Structures Design To ensure uniform pressure distribution, the thickness of the foundation, 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 In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength

RCC Structures Design
If permissible working stresses in steel and concrete are respectively 1400 kg/cm² and 80 kg/cm² and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

RCC Structures Design
Design of R.C.C. cantilever beams, is based on the resultant force at

RCC Structures Design
To ensure uniform pressure distribution, the thickness of the foundation, 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
In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength