In the case of brick pillar, the offsets should not exceed 5 cm. In the case of masonry pillar, the offset may vary between 10 to 15 cm corresponding to the step height of 15 to 22.5 respectively.
FIG. 3.5 STEPPED PAD FOOTING.
The depth of concrete block is given by
where q and m are in the same units (i.e. in kg/cm^2 or t/m^2 or kN/m^2), and d and a are in the same units
(i.e. in cm or m ro mm).