All about civil construction knowledge- PARAM VISIONS

How to calculate the self weight of RCC footings & plinth beams?/Dead load of RCC footings & plinth beams.

 Let us now calculate the self-weight or dead load of the RCC footing as shown in the drawing.



Given data:

Length at the base = L = 750mm.

Breadth at the base = B = 600mm.

Total height H = 500 mm.

Top surface length = l = 450mm.

Top surface width = b = 300mm.


Calculation:

The self-weight of any RCC structure is calculated by the formula

  = [Unit weight × volume.]

As you know, the unit weight of the RCC structure = D =2500kg/cum.


The volume of the RCC footing is calculated in a separate article as linked below.

👀. How to calculate the volume of concrete in trapezoidal footing?


The self-weight of RCC footing

= [ 2500 kg/m³ × 0.1904m³]

= 476kg.


 Let us now calculate the self-weight or dead load of the plinth beam as shown in the drawing.


Given data:

The span of  plinth beam-1 (PB1) = 4500mm.=4.5m.

The span of  plinth beam-2 (PB2) = 3000mm.=3.0m.

Sectional dimension of plinth beams = 230mm. × 450mm.

                                                           = 0.23m. × 0.45m.


Calculation:

The self-weight of the PB2

  = [Unit weight × (volume)]

 = [ 2500 kg/m³ × (3m × 0.23m. × 0.45m.)]

= 776.25kg.


 The self-weight of the PB1

  = [Unit weight × (volume)]

 = [ 2500 kg/m³ × (4.5m × 0.23m. × 0.45m.)]

= 1164.38kg.



Thank you for going through these calculation steps. Have a good day 😄.


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