R.C.C BEAM DESIGN.xlsx

General

Project: Designed by: Checked by: Date:

Ref:

PC SS 22-Feb-13

Part of structure:

Ground Floor Roof Slab

Design of R.C.C Beam Considered Beam = B1 Maximum Bending Moment

200.00

KNm

Characteristic Compressive strength of Concrete (28 days Cube strength) 'fck'

30

N/mm2

Yield Stress of Reinforcing steel 'fy'

500

N/mm2

27386.13

N/mm2

Modulus of Elasticity of Concrete 'Ec'

#NAME?

Modulus of Elasticity of Steel 'Es'

200000.00 N/mm2

Clear Cover to the Tension Reinforcement

30

mm

Clear Cover to the Compression Reinforcement

30

mm

Assume diameter of Reinforcement Bars

20

mm

Width of the Beam 'b'

300

mm

Assume Overall Depth of Beam 'D'

500

mm

Effective depth of Beam 'd'

460.00

mm

209.77

mm

#NAME?

Limiting Depth of Neutral Axis 'xm' from Strain Compatibity of Concrete and Steel #NAME? Limiting Force of Compression in Concrete-Singly Reinforced Balanced Section

679661.24 N

Limiting Force of Tension in Steel-Singly Reinforced Balanced Section

679661.24 N

Limiting Area of Reinforcement in Tension-Singly Reinforced Balanced Section

1562.44

mm2

Limiting Percentage of Steel-Singly Reinforced Balanced Section

1.13

%

Limiting Moment of Resistance with respect to concrete 'Mlim,concrete

253.33

KNm

Actual Depth of Neutral Axis for Under Reinforced Section 'x'

156.70

mm

Lever Arm 'z = d -0.416 * x'

394.81

mm

Area of steel Required for the given Bending Moment

1164.53

mm2

No. of Bars Required for the Bending Moment

3.71

Nos

Provide No. of Bars in Tension Zone

5

Nos

Provide No. of Bars in the Compression Zone

2

Nos

Diameter of Bars in the Compression Zone

16

mm

Effective cover to compression reinforcement 'd'

38.00

mm

Strain at the level of compression reinforcement εsc = 0.0035 (1-d'/xm)

0.0029

Corresponding stress in compression steel

353

Design the Beam as Singly Reinforced Section Requirement of Area of steel corresponding to a balanced singly reinforced Beam

N/mm2

General

Project: Designed by: Checked by: Date:

Ref:

Part of structure:

PC SS 22-Feb-13

Ground Floor Roof Slab