Casting apron in a borehole is needed for preventing
and to fix pedestals.
pedestal is necessary for installing any kind of pump in the
use 1:2:3 ratio to mix cement, sand and hardcore for
casting. The casting is reinforced with wire mesh.
recommended length in Uganda for drainage channel is 3m in
a sloping area and 6 m in a flat place.
pit at the end of the drainage channel is not recommended by
Uganda's Directorate of Water Development in prevention of
creating breeding areas for mosquitoes and other insects.