Wall Trenches, Column Pits and Basements

The bottom surface and the sides of the foundation trenches, column pits and basements should be treated through applying chemical water emulsion at the rate of 5 litres per square meter of the surface area. After the foundation for the walls, piers, columns, and retaining walls of the basement come up; treat the back fill earth within immediate, contact along with every side of the foundation along with the chemical emulsion by the rate of 7.5 liters per square meter of the vertical surface of the foundation masonry. This treatment is fundamentally to be provided to masonry foundation along with a view to ensure in which the termites do not gain entry within the building by the voids in the joints in the masonry.

In case of RCC basement walls or RCC columns, there is no possibility of voids, that can allow entry of termites, and therefore it is not essential to start anti-termite treatment right from the bottom of excavation. In those cases, the treatment should begin at depth of 500 mm below ground level. The back fill around RCC columns, beams and whole basement walls from a depth of 500 mm up to ground level should be treated along with chemical emulsion of vertical surface by the rate of 7.5 liters per square meter.