Concrete Footing Cy

Reference data and engineering information about concrete footing cy for building and construction applications.

concretefooting

Overview

Engineering reference data for Concrete Footing Cy in building construction.

Key Formulas

U-value

$U = \frac{1}{R_{total}}$

Overall heat transfer coefficient.

Heat Loss

$Q = U A \Delta T$

Heat transfer through building envelope.

Variables

Symbol	Description	Unit
$U$	U-value	W/(m²·K)
$A$	Area	m²
$\Delta T$	Temperature difference	K

Concrete Volume Reference Table

7 rows

Concrete volume in cubic yards (cy) per linear foot of footing for various depths and widths.
Depth of Footing(in)	Volume (12" wide)(cy/ft)	Volume (15" wide)(cy/ft)	Volume (18" wide)(cy/ft)	Volume (24" wide)(cy/ft)
6	0.019	0.023	0.028	0.037
8	0.025	0.031	0.037	0.049
9	0.028	0.035	0.042	0.056
10	0.031	0.039	0.046	0.062
12	0.037	0.046	0.056	0.074
18	0.056	0.069	0.083	0.111
24	0.074	0.093	0.111	0.148

Source: engineeringtoolbox.com

Unit Conversions

For calculations involving concrete footings, these key unit relationships are essential:

1 cubic yard (cy) = 27 cubic feet
1 foot (ft) = 12 inches (in)

Note: The formula v = 0.0031 l w t uses length and width in feet but depth in inches. This conversion factor (0.0031) accounts for the mixed units and converts the final volume to cubic yards.