H
half-closed layer
historical maximum stress (s'm p'm)
horizontal strain (eh)
horizontal stress (sh s'h)
Hvorslev surface
hydraulic gradient (i)
hydrostatic pressure
hydrostatic thrust (Pw)
half-closed layer
A layer or stratum or soil from which pore water may drain only upward or only downward into either an overlying or an underlying permeable layer, thus enabling ‘one-way drainage’; drainage path length = layer thickness.
historical maximum stress (s'm, p'm)
The maximum stress to which an overconsolidated soil has be subjected in the past:
s´m = historical maximum normal effective stress
p´m = historical maximum mean normal effective stress
s´vm = historical maximum vertical effective stress
= preconsolidation stress
horizontal strain (eh)
Strain measured in horizontal direction.
horizontal stress (sh, s'h)
Total or effective stress acting in a horizontal direction.
Hvorslev surface
Named after Prof. M.J.Hvorslev, that part of the state boundary surface
corresponding to peak states and lying on the dry side of critical states.
hydraulic gradient (i)
 Between two points in a hydraulic
flow: the difference in total head divided by the length of flow path.
i = Dh / Ds.
hydrostatic pressure
The pressure developed at a depth (z) below the surface of a liquid; it acts equally in all directions.
u = z . gw
hydrostatic thrust (Pw)
The thrust produced on a given surface by body of water.
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