GGU-AXPILE: Enter system parameters (Example 1)

The appropriate partial factors have already been entered into the "Edit/System parameters" menu item.

The following parameters can also be entered:

• "Grade + Groundwater" group box
  The groundwater level is entered as a positive value in [m] from ground level down. If you activate the "Use absolute heights" check box in the "Edit/Ground level" menu item, the groundwater level input will be positive upwards, e.g. in [m AD]. Information on the groundwater level is only important when working with tension piles.

• "Adjustment factors" group box
  If you need to introduce adjustment factors for base resistance and skin friction over and above those in the EAP, enter the values here.
  DIN 4014 states that the base resistance must be reduced to 75% for bored piles with belled toes. The appropriate check box must be activated.

• "Minimum pile length" group box
  DIN 4014 demands a minimum pile length of 5 m. The GGU-AXPILE program examines this condition for the value entered. If the minimum pile length is not adhered to there will be no analysis for this length.
  If a reduction in the minimum pile length is acceptable from a geotechnical point of view, this value can be lowered. The program will issue an appropriate warning message during analysis.

• "Minimum embedment in load-bearing strata" group box
  DIN 4014 demands that the bored pile embeds at least 2.5 m into load-bearing subsoil. The GGU-AXPILE program examines this condition for the value entered. If the minimum embedment is not adhered to there will be no analysis for this pile.
  If a reduction in the minimum embedment depth is acceptable from a geotechnical point of view, this value can be lowered. The program will issue an appropriate warning message during analysis.

• "Pile resistance" group box
  The partial factor to Table 3 of DIN 1054:2005 has been entered.

• "Actions" group box
  The partial safety factors for permanent (G) and changeable (Q) actions in Table 2 of DIN 1054:2005 were entered.
  It is still possible to alter the "Ratio variable/total loads Q/(G+Q)". The failure stress is first divided by the bearing capacity partial factor. This gives the bearing capacity stress. A further reduction by the partial factors for actions is necessary for calculation of an allowable foundation pressure. In load case 1, e.g., a partial factor of gam(G) = 1.35 for permanent loads and one of gam(Q) = 1.50 for changeable loads is demanded. From a ratio of 0.40, for example, a total partial factor results from:

Ratio · 1.50 + (1.0 - ratio) · 1.35 = 1.410

• "Determine R(E,k) via"/"Determine allowable V via" group box
  You can determine the characteristic bearing resistance in the serviceability limit state R(E,k) via the given allowable settlement. Enter the allowable heave instead of the allowable settlement for a tension pile.
  If working with the old global safety factor approach Allow. V can alternatively be determined via the "Required safety".