A wall footing is a typical case of continuous footing. This may have a base course of concrete or may be made of the same material as that used for the wall. This type of footing may be simple or stepped.
For light loads a simple base with a projection of 15 cm on either side is provided. As a general rule the base width of concrete bedding should be twice the width of the wall and the depth of the base concrete is at least twice the projections.
In another type of wall footing no base concrete is provided. In such a case in order to transmit the load gradually the width of the wall is gradually increased. This is adopted by projecting bricks regularly to a distance not greater than 
of a brick beyond the edge of the wall. Cement mortar is used in both the cases for walls. For foundation part a richer mix has to be used.
In another type of continuous footing series of columns in a line are provided with a footing. Here reinforced concrete slabs extends over the series of columns. In order to increase the stability a deep beam is constructed in between the columns. Such type of footings resist differential settlements.
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