, that
; and further, that if
acts 1.303 ft. above the base, the resultant on the base passes exactly through the outer toe of the wall.
Fig. 10.
As the true position of the center of pressure on a surcharged wall has never been ascertained, as far as the writer knows, he has made a number of constructions, after the method illustrated in [Fig. 1], in order to find it.
In place of making the construction for the special case above, it was thought that the results would be more generally useful if the natural slope was taken with a base of 3 and a rise of 2, and
