Section 25(f) in General Specification and Conditions of Contract
(f)Junctions of earthwork. - Junctions shall be avoided as much as possible, but where unavoidable, they shall be constructed as under:-(i)Cross Section Junctions - The loose surface earth of the end slop of the old embankment shall be entirely removed and that slope be thereafter cut into series, of joggles and tongues sloping vertically up it. The excavated surface shall be well wetted and the new earthwork consolidated in intimate union with it.(ii)Longitudinal Junction - All loose surface earth shall be removed and the solid surface of the old embankment shall be cut into a series of benching of irregular width and depth which shall be wetted. The new earthwork shall be then constructed in layers sloping steeply, on the old embankment and shall be consolidated in intimate union with it.
