Footing Depth For Concrete Wall

Ten inches is better and twelve inches is highly desirable.

Footing depth for concrete wall.

The width at the base shall not be less than the width of the supported wall plus 30 cm. So for example if your wall is 12 inches thick your footing will need to be 12 inches deep and 24 inches wide. Eight inches is the minimum thickness for a footing. The base of the footing wall rests on a plain concrete footing which projects 10 to 15 cm beyond the last brick offset as shown in fig.

Discontinuous footings work fine for concrete walls which can be reinforced to take the loads. The minimum reinforced concrete footing thickness will be 6 inches or 1 1 2 times the length of the footing projection from the foundation wall whichever is greater. It should project on both sides no less than 2 inches. The steel has to extend 3 feet into the main wall and 3 feet into the shorter wall beyond the point where the footing starts figure 11.

You can leave the concrete footing a few inches below grade to make sure it does not show when the wall is finished. Your footing should extend below the frost line. A poured concrete footing for concrete block or brick walls should be at least twice as wide as the planned wall. The footing width should be between two and three times the width of the wall to be built on top of it and the depth should not exceed the projection of the footing beyond the wall on one side.

Determine the planned wall s height and width. Pier and column footing requirements. Find nearby slab and foundation contractorsto help with your footings. The depth of each course can be one brick or multiples of brick thicknesses.

Footing depth can be confused with the thickness of a footing. The footing dimensions will largely be determined by the size of the wall. The depth of the footing in the ground depends on. Footing thickness 8 to 12 inches footing depth varies based on frost line and soil strength some footings can be shallow while other must be deep concrete calculator figure out how much concrete you ll need for your footings.

If your wall will be 18 inches thick you should make your concrete footing 24 inches thick. For masonry or concrete construction the minimum foundation wall will be 6 inches. These considerations have some variability to allow for conditional adjustments such as the need to reach down to the frost line. The footing should be at least as thick vertically as the wall s planned width.