Top of Pile Layout Forces [TB]

The Top of Pile Layout Forces workflow item extracts forces at the top of every pile in a selected pile layout (pile group) and identifies the critical pile based on a user-chosen force or moment component. The extracted forces are used by downstream pile interaction and pile capacity checks.

General

Pile Layout: Pick the pile group (layout) from which forces are extracted at each pile's top. Required; exactly one pile group must be selected.

Find Critical Pile According To: [Fx/Fy/Fz/Mx/My/Mz]: Component used to select the critical pile inside the picked layout. The pile whose absolute value of the selected component is largest becomes the reported "critical" pile; the extracted forces correspond to that pile.

Extract From [Result Case/Load Combination Table]: Source of the extracted forces. Result Case (0) pulls the envelope from a single analysis case. Load Combination Table (1) applies AASHTO limit-state factors before extraction.

Result Case: Analysis case whose result is read when Extract From is Result Case.

Load Combination Table: Limit-state table used when Extract From is Load Combination Table.

Limit State [Strength I/Strength II/Strength III/Strength IV/Strength V/Extreme Event I/Extreme Event II/Service I/Service II/Service III/Service IV/Fatigue I/Fatigue II]: AASHTO limit state whose combined forces are extracted. Only enabled when Extract From is Load Combination Table.

Force Extraction Settings

Maximize Force [All/Fx/Fy/Fz/Mx/My/Mz]: Component used to identify the critical result for each pile before the critical pile is selected. All computes each component independently.

Min/Max [Abs. max/Max/Min]: Sorting convention for the component search. Abs. max picks the largest magnitude; Max picks most positive; Min picks most negative.

Set Max Target [Self/Target]: (Read-only) Indicates the max target mode used. Shown for reference.

Extracted Forces

All values in this group are computed from the most recent result extraction — they are displayed read-only for inspection.

Extracted From: (Read-only) Result case or load combination used.

Force Settings: (Read-only) Summary of the Maximize Force and Min/Max selections.

Last Result Extraction: (Read-only) Date and time of the last result extraction.

Fx: (Read-only) Extracted axial force at the critical pile top.

Fy: (Read-only) Extracted transverse shear force.

Fz: (Read-only) Extracted vertical force.

Mx: (Read-only) Extracted moment about X.

My: (Read-only) Extracted moment about Y.

Mz: (Read-only) Extracted moment about Z.

Coordinate System: (Read-only) Coordinate system in which the forces are reported.

Pile Index: (Read-only) Zero-based index of the critical pile inside the picked pile layout.