Figure shows a strap footing has designed to support two columns A and B with loads $600$ KN and $1\mathrm{.}0$ MN $,$ respectively. The footings rest at a depth of $2\mathrm{.}0$ below the ground level on a sand layer that has an allowable net bearing capacity of $200K\frac{N}{m^2}.$ Design the strap beam and then find the full details of the two footings