Geotech Engineering

API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand calculator

API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

Calculate API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand

Calculator

Axial compressive capacity (N)
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Result Interpretation

API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand calculator computes Axial compressive capacity in N using the defined engineering formula and the input values provided. Axial compressive capacity is expressed in N. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Bearing capacity factor Nq = 35
  • Effective vertical overburden stress at pile tip = 100000
  • Pile tip cross-sectional area = 0.25
  • Lateral earth pressure coefficient = 1
  • Effective internal friction angle of sand = 0.733038
  • Pile shaft surface area = 12

Expected Result:

  • Axial compressive capacity = 1517984.2320687

Engineering Interpretation:

Under the given input conditions, the calculated result is: Axial compressive capacity = 1517984.2320687 N.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

axial compressive capacity = (0.5 * bearing capacity factor nq * effective vertical overburden stress at pile tip * pile tip cross-sectional area) + (lateral earth pressure coefficient * effective vertical overburden stress at pile tip * tan(effective internal friction angle of sand) * pile shaft surface area)

Formula family: formula_geotech_api_rp_2a_wsd_pile_axial_capacity_calculator_sand

Variables

SymbolLabelRoleDescription
Nq Bearing capacity factor Nq INPUT Bearing capacity factor Nq
sigma_v_prime Effective vertical overburden stress at pile tip INPUT Effective vertical overburden stress at pile tip
Ap Pile tip cross-sectional area INPUT Pile tip cross-sectional area
K Lateral earth pressure coefficient INPUT Lateral earth pressure coefficient
phi Effective internal friction angle of sand INPUT Effective internal friction angle of sand
As Pile shaft surface area INPUT Pile shaft surface area
axial_compressive_capacity Axial compressive capacity OUTPUT Axial compressive capacity

Calculation Steps

  1. Enter the bearing capacity factor nq in dimensionless.
  2. Enter the effective vertical overburden stress at pile tip in Pa.
  3. Enter the pile tip cross-sectional area in m^2.
  4. Enter the lateral earth pressure coefficient in dimensionless.
  5. Enter the effective internal friction angle of sand in rad.
  6. Enter the pile shaft surface area in m^2.
  7. Step 1: Compute axial compressive capacity.
  8. Read the axial compressive capacity (N) from the results.

Engineering Summary

Calculate API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand

Frequently Asked Questions

What does this calculator calculate?

The API RP 2A-WSD Driven Pile Axial Compressive Capacity in Sand calculator estimates Axial compressive capacity based on the input parameters you provide

Why is bearing capacity factor nq important in this calculation?

bearing capacity factor nq is directly proportional to axial compressive capacity. When you enter bearing capacity factor nq in dimensionless, the calculator uses it in the engineering formula to compute the output

How should I interpret the result axial compressive capacity?

The calculator outputs axial compressive capacity in N. For larger forces, you can divide by 1000 to express the result in kN. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Bearing capacity factor Nq (dimensionless), Effective vertical overburden stress at pile tip (Pa), Pile tip cross-sectional area (m^2), Lateral earth pressure coefficient (dimensionless), Effective internal friction angle of sand (rad), Pile shaft surface area (m^2). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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