Xponexus Engineering

Pile Capacity

EC7 (UK NA) pile axial capacity with R4 resistance factors (driven/bored/CFA), optional model factor (1.4/1.2), and correlation factor ξ.

Geotechnical Engineering • #geotech EN 1997-1 UK NA R4 Compression + Tension

Scope note: Enter characteristic resistances from your chosen method (CPT/SPT/α/β/λ or test). Apply ξ if needed, then UK NA γR set.

Design actions

NEd (kN)

TEd (kN)

Load case

Group efficiency η

If group: capacity reduced by η (simple). Full group analysis is beyond this tool.

Base Rb,k (kN)

Shaft Rs,k (kN)

Tension shaft Rt,k (kN)

Negative skin friction Nnf,k (kN)

Negative skin friction is treated as an additional action (added to NEd).

Apply ξ?

ξb (base)

ξs (shaft)

Use if your method requires correlation (e.g., depending on number of tests). Enter ξ ≤ 1.0.

Pile type

SLS verification

Loads of projects tweak these with justification—keep as defaults but editable is possible if you want.

Apply model factor?

Model factor

Applied as a resistance reduction prior to γR (simple, transparent).

Compression

—

Tension

—

Governing

—

Utilisation: NEd/Rd or TEd/Rd (≥ 1.0 = FAIL)

Press “Run calculations”.