Providing, lowering precast concrete NP-2 plain end pipes and collar with reinforcement, in trenches to correct gradient and alignment, cutting of reinforcement cement concrete plain end pipes, stinging in trenches, jointing ends and fixing collar with cement mortar 1:2 as per IS 458:2003 into trenches for all depths and laying out same to correct alignment, gradient, levels etc. complete in all respects (A7C slip – 7), 300 mm inside diameter