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Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator

Easily calculate and compute single driven pile ultimate axial compression capacity (q_ult = q_b + q_s) calculator with accurate equations, live formulas, and expert guidance.

Outside diameter of driven or bored cylindrical pile.

Depth of pile penetrated into bearing ground.

Average undrained shear strength of cohesive stratum.

Skin friction reduction factor (typically 0.4 to 0.7 for clays).

Design safety factor against plunging failure.

Calculated Result
551.3 kN

Allowable Pile Load (Q_all)

Allowable Pile Load (Q_all)

551.3 kN

Allowable Axial Load Capacity Kn

551.3

Allowable Axial Load Tonnes

56.2

Ultimate Capacity Qult Kn

1378.4

Shaft Skin Friction Qs Kn

1213

551.3 — kN

Calculation Breakdown

  1. Applied FormulaSizes deep cylindrical driven and bored foundation piles in cohesive soils using the API/Tomlinson α-method, calculating base end-bearing (Qb) and cumulative shaft skin friction (Qs).Q_{ult} = Q_b + Q_s = N_c c_u \frac{\pi D^2}{4} + \alpha c_u (\pi D L)

Single Pile Axial Capacity Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.0138276413551Allowable Pile Load (Q_all)

What Is the Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator?

This tool computes single driven pile ultimate axial compression capacity (q_ult = q_b + q_s) calculator with high precision arithmetic.

How Does the Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator Work?

Sizes deep cylindrical driven and bored foundation piles in cohesive soils using the API/Tomlinson α-method, calculating base end-bearing (Qb) and cumulative shaft skin friction (Qs).

Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Qult=Qb+Qs=NccuπD24+αcu(πDL)Q_{ult} = Q_b + Q_s = N_c c_u \frac{\pi D^2}{4} + \alpha c_u (\pi D L)

Sizes deep cylindrical driven and bored foundation piles in cohesive soils using the API/Tomlinson α-method, calculating base end-bearing (Qb) and cumulative shaft skin friction (Qs).

How to Use the Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Single Driven Pile Ultimate Axial Compression Capacity (Q_ult = Q_b + Q_s) Calculator Example

Input Values:

pileDiameterMeters:0.6
pileEmbedmentLengthMeters:18
soilCohesionCuKpa:65
alphaAdhesionFactor:0.55
factorOfSafety:2.5
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required kN.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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