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Directory service

GE summarises new and updated entries in the Geotechnical and Geoenvironmental Software Directory.

The most comprehensive listing of geotechnical/geoenvironmental software available is the Geotechnical and Geoenvironmental Software Directory, which is revised every two or three months by Mott MacDonald's Tim Spink.

Here Spink summarises the most recent updates and new entries since October and reviews the pick of the new entries.

The directory details 1,372 programs in geotechnical engineering, soil mechanics, rock mechanics, engineering geology, foundation engineering, hydrogeology, geoenvironmental engineering, environmental engineering, data analysis and data visualisation. Contact information is given for 792 suppliers and publishers and there are 27 links to websites featuring related lists of programs.

A new category was recently added for ground improvement, which brings together programs on grouting, stone columns, wick drains and soil stabilisation.

Some 70 new programs have recently been launched and below Spink reviews those that stand out as being 'more interesting, useful or different'All the selected programs run under Windows or over the internet.

Bearing capacity - Multiple Load Footing Design Uses finite element methods to design combined, trapezoidal or strip footings with multiple loads. Considers bearing capacity, settlement and reinforcing design.Output data includes displacements, reactions, forces, reinforcing requirements, bar sizes and bar spacing.

Geotechnical software suites - FOSM Calculator Uses first-order, second moment expressions to perform probabilistic or reliability-based analyses of several geotechnical and hydrologic problems including stability analysis of forested infinite slopes, steady-state drawdown around a pumping well, Green-Ampt infiltration rate and wetting front travel time, and Manning's equation for open channel flow. Written in JavaScript, it runs within a web browser.

Ground improvement - Injectsoft Carries out presentation and analysis of grouting data recorded by a data logger.

Laboratory testing (soil) - Keylab (see feature page 18).

Numerical analysis (soil) - intuitiveFEM/GEO Finite element analysis program for 2D/3D continuum problems using linear and non-linear models such as Mohr-Coulomb. Groundwater flow can be modelled for confined/unconfined saturated/unsaturated situations.

Results are displayed as contours, vectors, deformed shapes, nodal resultants and as animations.

Piles (lateral loading and groups) - DynaPile Analysis software for pile foundations under dynamic loading. It computes the dynamic stiffness of single piles or pile groups, either floating or end-bearing. The vertical dynamic stiffness, horizontal dynamic stiffness, and rocking dynamic stiffness are generated.

Piles (single) - DRIVEN (FHWA) A free program for determining the ultimate vertical static capacity of driven piles in cohesive and non-cohesive soils.

It is based on US standards and practices.

Retaining wall design - RetWall (Napier) Free prototype knowledge-based system that runs over the internet and helps in selection of earth retaining structures.

Settlement analysis - FLEA5 Calculates stresses and displacements within a multi-layered soil deposit of finite thickness generated by multiple uniform surface loadings. The surface loading may be applied over a circular, strip or rectangular region.

Slope stability (soil) - Stabl for Windows Windows version of the well-known slope stability program from Purdue University in the US. It carries out twodimensional limiting equilibrium methods for circular and general failures and includes the analysis of reinforced soil slopes with geosynthetics, nailing, and tiebacks.

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