Static load tests

is the most reliable method for verifying the bearing capacity of foundation piles under real load conditions. It involves applying a controlled static force to a pile and measuring its settlement to ensure the design assumptions are met. This test provides direct proof of performance for both design validation and quality assurance.

How it works

A reaction system is installed around the test pile, consisting of anchor piles and a loading beam or frame. A hydraulic jack applies a gradually increasing vertical load to the pile. Settlement is measured using displacement sensors or dial gauges. The relationship between applied load and pile displacement is analyzed to evaluate load-bearing behavior and potential failure.

Site preparation

The test area is secured, and anchor piles are installed to support the reaction system.

Test frame setup

A hydraulic jack and load frame are positioned on the test pile to apply vertical force.

Load application

Load is applied in controlled increments while settlement is continuously monitored.

Analysis and results

Load–settlement curves are generated to confirm pile capacity and deformation limits.

Process steps

The test is performed before final pile acceptance or when verifying design assumptions on site.

Selection of test pile

Identify representative pile

Choose a working or trial pile for testing based on design and location.

Reaction system setup

Anchor and frame installation

Install anchor piles and load frame to provide stable resistance.

Load testing procedure

Stepwise loading

Apply load as per standard (e.g., EN ISO 22477-10), measuring settlement after each increment

Evaluation and documentation

Load capacity confirmation

Analyze data to determine allowable and ultimate pile capacity.

Benefits

Direct capacity verification

Confirms actual pile performance under load.

Design validation

Assures engineers and clients that design assumptions are accurate

Quality control

Detects installation defects or unexpected soil behavior

Regulatory compliance

Meets international standards (e.g., Eurocode, ASTM) and client requirements.

Where it applies?

Residential construction

Infrastructure

Geotechnics

Railways

Energy construction

Have Questions? Contact Us

Frequently Asked Questions

How long does a static load test take?

Depending on the procedure (maintained load or constant rate of penetration), the test may last from several hours to a full day.

Is this test destructive?

No. Static load testing is non-destructive and does not impair the structural function of the tested pile.

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