Wallap

Key Features

Scope

• Cantilever walls
• Anchored walls
• Strutted excavations
• Sheet pile walls
• RC Diaphragm walls
• Soldier (King) Pile walls
• Hydrostatic or non-hydrostatic water pressures. Automatic water pressure balancing option
• Uniform or variable surcharges applied at or below ground level
• Structural loads applied to the wall
• Seismic analysis

Analysis options

• Limit State analysis in accordance with Eurocode 7
• Factor of Safety calculation in accordance with
  Eurocode 7 and BS 8002
• Bending moments and wall displacements calculated by finite
  element analysis
• Construction sequence and Berm excavation modelled
• Soil arching and Soil-wall gap modelled
• Non-linear elastic/plastic soil model
• Fully automatic calculation of earth pressures

User Interface

• Simple data input with interactive Help
• Soil properties archive facility
• Hot Keys for instant Help, Error reporting, Data plot and
  Summary output
• Free choice of units
• Graphical output of data and results
• Fully documented

WALLAP is a powerful, fast and user-friendly program for analysing the stability of cantilevered and propped retaining walls. WALLAP is suitable for the analysis of both temporary works, such as sheet pile walls, and permanent works such as reinforced concrete diaphragm walls and contiguous bored pile walls.

Factors of safety are computed according to standard codes of practice while wall displacements and bending moments are calculated by a finite element analysis which models the actual sequence of construction of the wall. Earth pressures are calculated automatically from basic soil properties.

The strata profile consists of up to 100 soil types with hydrostatic or non-linear water pressure distributions. Surcharges may be applied and removed while struts and anchors may be installed and removed. The program is menu driven with context sensitive Help and on-line access to the comprehensive User Manual giving detailed guidance on data input and interpretation of results.