surname, attested from late 12c., probably meaning bald head; cf. Wyclif Stye up, ballard, where Coverdale translates Come vp here thou balde heade [2 Kg.2:23-24, where God kills 42 children for making fun of Elijah's lack of hair.]
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or rock layers moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. Comments.
In a shear slump the top portion of the concrete shears off and slips sideways. OR. If one-half of the cone slides down an inclined plane, the slump is said to be a shear slump. If a shear or collapse slump is achieved, a fresh sample should be taken and the test is repeated.