Concrete blocks are a common building material for a variety of outdoor projects such as retaining walls and out buildings like garages and tool sheds.
Footing for concrete block wall.
The size of the trench and diameter of the rebar depends on the purpose for the wall such.
The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line.
Always check local building codes for construction requirements in your area.
To construct a block wall you need to establish a solid footing that is a minimum of twice the width of the concrete block.
Footers for block walls consist of a footing trench steel reinforcement rods rebar and concrete.
However for even the most modest block structure to have enough rigidity to bear pressure and weight it needs proper footing.
What type of footing is required for a concrete block wall.
If you want a superstrong concrete block foundation you need to include both horizontal steel reinforcing wire and in the cores vertical reinforcing steel that extends up from the concrete footing.
Foundation all concrete block walls must rest on a sturdy foundation of poured concrete.
For example a typical 8x8x16 in.
Installing concrete block foundation walls over the footings is a common method of getting the concrete slab raised above grade in our area of the country central alabama.