How To Calculate The Volume Of Concrete Triangular Pile Cap Having 3Piles
Let us calculate the volume of concrete in a triangular pile foundation having 3 nos. of the pile, as shown below.
Given data:
Pile diameter = 0.6m.( d )
No. of piles = 3 nos.
Length of pile = 16m. (h )
Depth of the pile cap = 0.9m.(D )
The volume of concrete in the piles
= 3nos.× πr2 h
Here,
r = radius of the pile.
= d ÷ 2
= 0.6m ÷ 2
= 0.3m.
h = length of the pile.
Learn More
Bar Bending Schedule Of Lintel Beam With Full Detail
The volume of concrete in piles
= 3nos. × 3.142 × (0.3m)2 × 16m.
= 13.57 cum.
The volume of concrete in the pile cap :
The volume of pile cap concrete
= Surface area (A ) × depth ( D )
First, let us calculate the sectional area (A1) of rectangle ABCD, as shown in the below drawing.
Area of rectangle ABCD (A1)
=L × B
= 2.2m × 2.0m
= 4.4 sqm.
To get the surface area ( A) of the pile cap, we have to deduct the area of triangles AEF & GDH from the rectangle area.
Learn More

Precautions to be Taken While Placing of Concrete  Do’s & Don’ts While Concreting

How to Calculate Quantities Cement, Sand, Aggregate and water in 1 m3 Concrete Work

What is 1.54 Constant for Concrete in Quantity Survey
Here,
Triangle AEF = triangle GDH
Area of triangle AEF
= 0.5 × base × height.
= 0.5 × side AE × side AF
Side AE
= [ ( 1/2 ×side BC ) – (1/2 × side EG )]
= [ ( 1/2 ×2m. ) – (1/2 × 0.6m. )]
= [ 1m – 0.3 m ]
= 0.7m.
Side AF
= side AB – side FB
= 2.2m – 0.7m
= 1.5m.
Learn More
Basic Rule For Design Of Concrete Column
I have redrawn the triangle, with the calculated length of the sides AF & AE as shown below.
Area of triangle AEF
= 0.5 × side AE × side AF
= 0.5 × 0.7m × 1.5m.
= 0.525 sqm.
The surface area of the pile cap (A )
= [area of rectangle ABCD – (2nos. × area of a triangle AEF )]
= [4.4 sqm. – (2nos. × 0.525sqm.)]
= [4.4 sqm. – 1.05 sqm.]
= 3.35 sqm.
Now, the concrete vol. of pile cap
= surface area (A ) × depth (D )
= 3.35 sqm. × 0.9m.
= 3.015 cum.
The total concrete volume of 3pile foundation
= The vol. of concrete in pile cap + total vol. of concrete in piles.
= 3.015 cum + 13.57 cum.
= 16.585 cum.
Other Post
To get more information, Visit Our Official website
Land Surveying & Architects
JOIN US & LIKE OUR OFFICIAL FACEBOOK PAGE
THANKS.