GWall

Gravity and Cantilever Wall Analysis Program.
GWALL analyses a wide range of retaining wall problems including gravity walls and cantilever walls with a base.

Methods of Analysis

GWALL carries out two types of analysis within the one program:

1. Limit equilibrium analysis for calculating factors of safety against sliding and overturning.
2. Calculation of bending moments and shear forces in the stem and base (including the effect of earth pressures due to compaction).

Wall Geometry

A wide variety of wall geometries can be analysed including variable heel and toe width, battered front and back faces and a shear key at any position.

Soil Properties

Up to 20 soil strata may be defined. For each stratum the following parameters may be specified:

• Density
• Friction angle and cohesion
• Earth pressure due to compaction
• Earth pressure coefficients

The program will, if desired, calculate earth pressure coefficients from values of soil friction, wall friction, batter angle and backfill angle given by the user.

Water Pressures

Hydrostatic or non-hydrostatic water pressure profiles may be defined on both sides of the wall.

Applied Loads and Surcharges

Surcharges may be specified to act on or below the ground surface on the active side.

Vertical, horizontal and moment loads may be applied to the top of the wall. Horizontal and vertical components of anchor load may be applied to the face of the wall.

Units

Data may be entered in any consistent set of units e.g. (kN,m), (lb,feet). All print-out from the program is automatically annotated in the appropriate units.

Output

Printed output from the program consists of the input data followed by details of the forces, factors of safety, wall pressures, bending moments and shear forces.