The vertical stress at the toe was found to be 3.44 MPa at the base of the gravity dam section. If the downstream face of the dam has a slope of 0.617 horizontal: 1 vertical, the maximum principal stress at the toe of the dam when there is no tailwater is _______________

The vertical stress at the toe was found to be 3.44 MPa at the base of

1.	The vertical stress at the toe was found to be 3.44 MPa at the base of the gravity dam section. If the downstream face of the dam has a slope of 0.617 horizontal: 1 vertical, the maximum principal stress at the toe of the dam when there is no tailwater is _______________
A.	1.7 MPa
B.	2.4 MPa
C.	3.6 MPa
D.	4.8 MPa
Answer» E.