Best Math Formula website. Search anything about Math Formula in this website.
how to calculate the size of a footing. You can look up the recommended footing size based on the size and type of house and the bearing capacity of the soil. Algebraically the pounds in the equation above cancelled each other leaving the unit as 6 square feet of footing needed for the load to be transferred to the ground.
How To Calculate Steel Quantity From Drawing The Easy Way A Civil Engineer Civil Engineering Design Structural Engineering Structural Drawing from in.pinterest.com
To determine the footing size needed under a deck post the same formula is used. Algebraically the pounds in the equation above cancelled each other leaving the unit as 6 square feet of footing needed for the load to be transferred to the ground. My calculations came up with 15 34 in.
But the lightest buildings on the strongest soil require footings as narrow as 7 or 8 inches.
If the measurement for the width is 144 inches the result is 12. Once you know the total load you can use the chart below to determine the footing size for your soil conditions. Divide the length by 12 to convert it to feet. As you can see heavy houses on weak soil need footings 2 feet wide or more.
