Foundations · Pile groups & caps
Raked pile group (2D rigid cap) calculator
Axial force in vertical and raked piles under a rigid cap carrying vertical load, horizontal load and moment, by the displacement (stiffness) method.
Standard: Axially loaded pin-headed piles · stiffness method
Inputs in the worked example
The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.
| Input | Value | Unit |
|---|---|---|
| Piles: x (m), rake 1:n (+ toe to +x, 0 = vertical), relative stiffness | -2, -4, 1 -1, 4, 1 1, -4, 1 2, 4, 1 | |
| Vertical load V* (down) | 2400 | kN |
| Horizontal load H* (→ +x) | 300 | kN |
| Moment M* (clockwise, about x = 0) | 200 | kNm |
| Pile compression capacity | 1200 | kN |
| Pile tension capacity (0 = none) | 200 | kN |
| Pile length (drawing) | 8 | m |
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For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.