Environmental Engineering Reference
In-Depth Information
FIGURE 3.53
Miniature vane-shear apparatus.
FIGURE 3.54
Torvane applied to the end of a Shelby
tube specimen.
Comments
The test is generally considered to give the most reliable values for
s
u
and
s
r
, but since the
test applies shear directionally, the values are affected by soil anisotropy. Failure actually
takes place by the shearing of two circular horizontal surfaces and a cylindrical vertical
surface. Vanes of different height-to-diameter ratios have been used by the Norwegian
