Volume 7, Issue 2 (June 1984)
Design Basis for Cells Measuring Shear Stresses in an Interface
An expression is derived for the measuring error that must be expected when measuring shear stresses in an interface, that is, on foundations, buried pipes, silos, and so forth, by means of a plate-type shear cell fixed along the edge. A prototype cell of this type has been produced and calibration tests carried out using two types of calibration equipment; in the first a uniformly distributed shear load is transmitted to the shear cell while in the second, the shear stress is transmitted through a particulate medium to the wall in which the shear cell is mounted. The accordance between the theoretically predicted measuring error, using the expression derived, and the experimentally determined measuring error is good.