In an earlier post, we have discussed how to calculate the material for concrete? & now we are going to see how to calculate the volume for trapezoidal footing volume along with an example.

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## Trapezoidal Volume Calculation Formula

The below formula is used to calculate the volume of the trapezoidal footing.

V = H/3 (A1+A2+(√A1 x A2)

A1 = Area of Lower Portion

A2 = Area of Upper Portion

H = Height of trapezoidal portion ## Example Footing Calculation

Let us see an example.

Refer below the Diagram. Now we are going to calculate the volume of the trapezoidal footing. Volume =  H/3 (A1+A2+(√A1 x A2)

A1 = 2 x 1.5 = 3 Sqm

A2 = 0.5 x 0.3 = 0.15 Sqm

H = 0.15m

Now Volume = 0.15/3 x (3+0.15+(√3 x 0.15)

=  0.05 x (3.15+0.67)

= 0.19 m3

Volume (V) = 0.19 m3

You may be interested to know about the different types of foundations used in construction. Bala is a Planning & QS Engineer working at Megha Engineering & Infrastructure Limited. He is the author, editor of Civil Planets.

1. Akhilesh Patel

good

• MOHAMED FARVAS

Do you have any Whatsapp group

2. Manimanta

It’s verY useful ThankQ so much.

• Bala

Be in connect!..

3. Hafiz toqeer shahid

Very good page for learning and growing

4. Please share derivation of the above formula. (Trapezoidal footing)

5. Nardev Singh

Very good web site