An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

RCC Structures Design
An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

Triangular load of the wall

UDL of wall + load from the roof

UDL of wall

Triangular load + load from the roof

Triangular load of the wall

UDL of wall + load from the roof

UDL of wall

Triangular load + load from the roof

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RCC Structures Design
For initial estimate for a beam design, the width is assumed

1/30th of span

1/25th of span

1/20th of span

1/15th of span

1/30th of span

1/25th of span

1/20th of span

1/15th of span

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RCC Structures Design
In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed

25 mm

15 mm

20 mm

10 mm

25 mm

15 mm

20 mm

10 mm

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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

38 cm

40 cm

39 cm

37 cm

38 cm

40 cm

39 cm

37 cm

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RCC Structures Design
In a singly reinforced beam

Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

Steel possesses initial stresses when embedded in concrete

Compression is borne entirely by concrete

Plane sections transverse to the centre line of the beam before bending remain plane after bending

Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

Steel possesses initial stresses when embedded in concrete

Compression is borne entirely by concrete

Plane sections transverse to the centre line of the beam before bending remain plane after bending

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RCC Structures Design
If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment

WL/2

WL/6

WL/8

WL/4

WL/2

WL/6

WL/8

WL/4

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RCC Structures Design

RCC Structures Design An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

RCC Structures Design For initial estimate for a beam design, the width is assumed

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 In a singly reinforced beam

RCC Structures Design If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment

RCC Structures Design
An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

RCC Structures Design
For initial estimate for a beam design, the width is assumed

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
In a singly reinforced beam

RCC Structures Design
If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment