Bi-Directional Static Load Test​

BDSLT Redefined​

Why Bi-Directional Static Load Test?

Bidirectional Static Load Testing (BDLT) is an advanced and efficient method for evaluating the load-bearing capacity of deep foundation piles and barrettes. This innovative testing technique is crucial for projects that require precise measurement of both skin friction and end bearing capacity in high-capacity foundations. The method involves performing full-scale static loading tests that evaluate the load performance of piles under axial compressive loads, which is essential for ensuring the stability and integrity of any foundation system.

Why Choose Us

Innovative Load Testing for Stronger Foundations

Expertise and Innovation

With over 70 years of experience and as pioneers in Bidirectional Load Testing, ARCOS Engenharia leads the industry in advanced foundation testing solutions.

Efficient and Accurate Testing

We provide comprehensive, simultaneous measurements of skin friction and end bearing load capacity, delivering fast and reliable results with minimal disruption to your project.

Cost-Effective and Safe

Our method eliminates the need for heavy equipment and reduces risks, saving both time and money while ensuring worker safety.

Benefits of Bi-Directional Static Load Test

No Need for Anchor Piles

This method removes the need for additional anchor piles, simplifying the setup and reducing costs.

No Need for Heavy Equipment

Traditional testing requires large weights or sandbags. With BDLT, we minimize the need for such resources, which means reduced effort and manpower.

Applicability to Small and Large Diameter Piles

We’ve extended the application of this testing method to small diameter piles, including mini piles and continuous flight auger piles, making it versatile for various project types.

How it works

Bidirectional Static Load Testing (BDLT) assesses the load-bearing capacity of deep foundation piles by placing expansion-operated load cells within the pile’s reinforcement cage before concreting. Once the pile is installed, these cells expand to apply a controlled load, measuring both upward and downward displacement. This simultaneous measurement captures the pile’s skin friction and end bearing capacity, providing comprehensive load performance data. After testing, the pile is grouted to restore structural integrity, making it part of the permanent foundation. This method delivers fast, reliable results with minimal setup and no need for heavy equipment or anchor piles.


Key Features

Codes and Standards Applicable

Several codes and standards apply to Bidirectional Static Load Testing (BDLT), ensuring consistency and accuracy in testing. Here are the commonly applicable codes

ASTM D8169/D8169M

Standard Test Methods for Deep Foundations Under Bi-Directional Static Axial Compressive Load

ASTM D1143

Piles under static axial compressive load, standard test method for

BS EN ISO 22477

Geotechnical investigation and testing. Testing of geotechnical structures

ABNT NBR 6122

This Standard specifies the requirements to be followed in the design and construction of foundations of all civil engineering structures

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