Thm are manY methods for estimating tho earth pi’essure behlad an earth retainins wall. A1mo.t all of them are helpful ill detofmining the magnitude, of tho earth-pressure force. They do not normally apeak abOUi the distribution of earth pressure behind the \’Vall. or the point of action of the resultaRt rorce. As su •• it is tilcitly assumed that tho emh pressure has a pattern of hydrostatic p~ distribution .&IId that the resultant aCts at one third height from the base or tho wall;· thouah tho experimental results are not always concurrent with this assumption. In.case of 1be dyllBlDil; ‘increment of earth pressure. the I, S. Code arbitrarily fixes the point of its action at two third height fronl tho base ilfthe waH and experimental ovidonoo to prove the same is very muclt Walltina .. ‘