I CONFERENCE PKOOF ONLY]
r ■ •
SECOND CONGRESS ON LARGE DAMS
WASHINGTON, D. c, 1936
COMMUNICATION No. 4 HARZA, U. S. A.
HA. , ■ » n
THE BEST MEANS FOR PREVEJ^JJNC^^^
In the. hi
L. F. Harza
Popular Conception of Piping hi ii ii
(•««.Ol a dam i- built of selected, well-corn
fyttiJ&Z*W&WktA1'-'1),ult on rock) .the founda-' " ' *' " " %ses or strata which must be Jierefore largely passes under ',tn rock foundation, and must 'piping" as applied to founda-^pj?|cause of a prevalentaniscon-Wmm a continuous open channel P|ich water flows as through a BfMhever obtains as the result of nt of failure, which usually Jjk: the toe. In a dam built of "*v^3v; .|„«lamaSe anc^ if built on rock TWEpw0'' water from the face of the M" ' fSsJtiff' extending partially into the
is diffused throughout the fonn but is greater in more the point of escape it may
/ itxon des "renards." 'rächen" (piping), de "renards."