__ALLCPT program__ provides a pile capacity analysis tool which can be used to calculate pile axial capacity for various pile types based on the imported CPT data. The pile axial capacity calculation is based on the LCPC CPT method proposed by Bustamante and Gianeselli (1982). The users can select ** Tool** >>

**from the top menu to open the pile axial capacity tool, which is shown in the figure below.**

*Pile Axial Capacity Tool*For pile axial capacity, the ultimate unit end bearing resistance **fb** is calculated from the equivalent average cone resistance **qca** which is multiplied by an end bearing coefficient **Kc** according to the following relationship:

The end bearing coefficient **Kc** can be estimated in accordance with the table below.

The equivalent average cone resistance **qca** is calculated based on the figure below.

In __ALLCPT program__, the equivalent average cone resistance **qca** is calculated in the following steps:

Step 1: calculate the average tip resistance

**qca'**, mean at the tip of the pile by averaging qc values over a length ranging from**a=1.5D**below the pile tip to**a=1.5D**above the pile toe (**D**is the pile diameter).Step 2: Remove

**qc**values in the zone which are higher than 1.3 times the mean of the cone tip resistance**qca'**, mean and those are lower than 0.7 times the mean of the cone tip resistance**qca'**, mean as shown in figure.Step 3: Calculate the equivalent average cone tip resistance

**qca**by averaging the remaining cone tip resistance qc values over the same zone that were not removed.

The ultimate unit side friction **fs** is calculated by measured **qc** values divided by a friction coefficient **alpha-LCPC** in according to the following relationship:

The friction coefficient **alpha-LCPC** can be determined by the table below:

The pile axial capacity tool in __ALLCPT program__ is shown in the figure below. The supported pile section types are circular section, rectangular section, octagonal section, H section, Pipe Section and user-defined section.

There are three different design approaches provided in the pile axial capacity tool and summarised as below:

Working load design

Limit state design - AS 2159-2009

Limit state design - AASHTO

The following figure shows the results available for graphical plot for the design approach of "Working load design". This selection dialog can be opened with double-clicking mouse on any sub-figure. The graphical plot on that sub figure will be then updated with the selected plotting type once this selection dialog is closed.

The following figure shows the results available for graphical plot for the design approach of "Limit state design - AS 2159-2009".

The following figure shows the results available for graphical plot for the design approach of "Limit state design - AASHTO".

In addition to the pile axial capacity results, pile settlement under axial load is calculated based on Fleming’s approach (__Fleming 1992__) in __ALLCPT program__. The settlement results can be viewed by the users by clicking the “Pile settlement” button on the toolbar of the pile capacity analysis tool. The input parameters relevant to the settlement analysis can be input by the users through “**Pile Capacity Analysis Option**” dialog as shown in Figure 6 under the section of “Pile Settlement Analysis Option”. A typical pile settlement analysis result dialog is shown in the figure below.