Rehbann's / Poncelets Theory
Rebhann (1871) gave this graphical procedure for locating the slip plane and determining the total active earth pressure according to Coulomb’s wedge theory. Procedure:- 1) Draw A retaining wall having height H i.e. AB 2) Draw three lines Ground Line ( ß @ with horizontal) Failure Line ∅ Earth pressure line Ψ 3) Through point A Draw a line parallel to Ψ line which cuts BD line at point C. 4) Through C draw perpendicular line CE which cuts an arc at E. 5) Join BE line consider BE as a radius and B as a center draw an arc through E which cuts at point F on BD line. Through F draw a line parallel to Ψ line which cuts line AD at point G. 6) Consider GF as a radius and F is a centre. Draw an arc through G which cuts BD at point H. Join GH to form a triangle GHF. 7) Consider GI is a height of triangle that is x. Through point B draw a line
