GGU-FOOTING: Preface

The GGU-FOOTING program allows the analysis of bearing capacity according to DIN 4017 and of settlement according to DIN 4019. Both the global safety factors according to DIN 1054 (old) and the partial safety factors according to DIN 1054:2005 or EC 7 may be taken into consideration. In addition to the standard DIN 4017 methods, the methods after Terzaghi, Meyerhoff, Hansen and Vesic that are well known from many literature references may also be adopted. Furthermore, soil improvement with vibrodisplacement compaction according to Priebe can be considered.

The program provides two different types of analysis:

• Mode 1: "Multiple footings"
  Multiple footings of a single type (pad or strip footing), which only vary in their width, are analysed. In this mode it is possible to generate footing analysis diagrams from which the bearing resistance design value (EC7), the acceptable bearing pressure (DIN 1054:2005) or the allowable footing pressure (DIN 1054 old) can be read off as a function of the footing width, together with the corresponding settlement.

• Mode 2: "Pad footing"
  A pad footing is analysed. It is possible to select between either a rectangular, a circular
  or annular footing. Analysis of the torsional stiffness, which can be determined using this mode for circular or annular footings, is often required for wind energy converters.

Further calculations for sloped systems with GGU-STABILITY and larger slabs with GGU-SLAB can be performed using the corresponding export functions.

If you are already working with GGU-CONNECT, you can also transfer soil properties from your subsoil layer model created in GGU-CONNECT (see “Defining soils” in “Example 1: Multiple footings”).

The program includes convenient data input. The system is permanently displayed on the screen. Every change to the data is displayed on the screen, so that optimum control of the input data is guaranteed.

There are "?" and "Info"’ buttons in the dialog boxes for many technical and program-specific questions. Click on the "?" buttons or "Info" buttons to obtain the necessary information.

The graphic output supports the true type fonts provided by WINDOWS, so that an excellent layout is guaranteed. Colour output and numerous graphic formats (BMP, TIF, JPG etc.) are supported. PDF and DXF files can also be imported via the integrated Mini-CAD system (see "Mini-CAD" manual).

The program has been extensively tested. No errors have been found. Nevertheless, liability for completeness and correctness of the program and the manual, and for any damage resulting from incompleteness or incorrectness, cannot be accepted.