Double layer tile lining for irrigation channels consisting of :-(i) 10mm thick cement mortar 1:5 on sub grade. (ii) First layer of 5.08 cm. thick tiles 30.48 x 15.24 cm laiSecond layer of tile 5.08 cm thick laid in 1:3 cement sand mortar with 6mmthick layer of mortar over sand-wichedd in 1:5 cement mortar as mentioned above. (iii) Sand-wiched plaster 1:3 cement sand mortar 16mm thick. (iv) Second layer of tile 5.08 cm thick laid in 1:3 cement sand mortar with 6mm thick layer of mortar over sand-wiched. The above gives total thickness of lining 13.36 cm On side slopes:- Upto 3.5 ms height above bed level.