Material properties of backfill earth, base earth, toe earth, water, friction angles, concrete or
masonry and reinforcement bar can be changed through Properties window as shown below.
The units shown are determined from the selected unit system using Options > Unit menu, Unit frame command or click 
on the Toolbar.
Properties window can be shown through Edit > Properties menu or Properties button frame
command.
Backfill earth
Earth material at the right side of the wall is assumed as backfill earth material. The
properties required to analyse the wall are unit weight (g), dry density (gd),
saturated density
(gs), internal friction angle (f) and cohesion (c) of the earth.
Base earth
Base earth is earth or rock material under the base of the wall. The properties required to
analyse the wall are internal friction angle (f), cohesion (c), ultimate bearing capacity (qd) and
elasticity modulus (E) or the earth or rock.
Toe earth
Earth material at the left side of the toe of the wall is assumed as earth material. The
properties required to analyse the wall are unit weight (g), dry density (gd),
saturated density
(gs), internal friction angle (f) and cohesion (c) of the earth.
Toe earth property may not be
specified if passive soil pressure sliding restraint in Edit > Restraints menu or Restraints button frame commands is disabled.
Water
The only water property required is unit weight (gw). Unit weight of water may not be specified
if water is disabled in the analysis through Options > Water menu or Water option frame
command.
Friction angle (d)
Earth-to-earth and earth-to-concrete friction angles are required in the analysis.
Concrete or masonry
Either concrete or masonry wall can be calculated using this software. Properties required are
unit weight (including reinforcement for reinforced concrete wall), compressive stress (f'c),
elasticity modulus (E) and Poisson's ratio (m). Compressive stress, elasticity modulus and
Poisson's ratio may not be specified if reinforcement is not used.
Reinforcement bar
Concrete or masonry wall can be reinforced using steel bars. Properties required when
reinforcements are used are yield stress (fy), elasticity modulus (E) and concrete cover
thickness.
button or "Esc" keyboard key are used to discard all changes. 
button or "Enter" keyboard key are used to accept all changes.
See also:
