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Micro-Berlin Wall: A Robust Solution for Retaining Structures

What is a Micro-Berlin Wall?

The Micro-Berlin wall is a heavy-duty retaining solution primarily used in projects involving high excavations in loose soils. This method is essential in scenarios where progressive excavation stability is required, making it ideal for complex real estate and infrastructure developments.

How Does the Micro-Berlin Wall Work?

Unlike the soil-nailed wall, the Micro-Berlin wall relies on:

  1. Pre-Installation of a Micropile Comb:
    • Micropiles are positioned along the future excavation line to stabilize the terrain before any digging begins.
  2. Gradual Terrain Stabilization:
    • This approach ensures high safety levels during temporary excavation phases, allowing for precise and controlled operations.

The Triple Role of Micropiles

1. Facilitate Excavation

  • Micropiles, pre-installed along the future retaining wall profile, guide the excavation process.
  • The result is a precise and efficient excavation, following the micropile alignment for ease of work.

2. Stabilize Rear Terrain

  • During the excavation process, micropiles provide progressive stability to the surrounding terrain.
  • This stabilization ensures safety while enabling the implementation of reinforcements, such as steel frameworks and dry-spray concrete.

3. Dimension the Retaining Structure

  • Micropiles provide punctual support along the height of the wall.
  • Additional tiebacks reinforce the top portion, while the foundation anchors the structure securely at its base.

Advantages and Disadvantages of the Micro-Berlin Wall

Advantages

  • High Safety Levels: Provides exceptional stability during temporary excavation phases.
  • Ideal for Loose Soils: Suitable for terrains with significant excavation heights.
  • Precision: Micropiles ensure accurate cuts and simplify excavation operations.

Disadvantages

  • Higher Costs and Time Investment: Compared to soil-nailed walls, the installation of micropiles adds to project timelines and expenses.
  • Longer Implementation: The additional steps involved in pre-installing micropiles require more time.

Soil-Nailed Walls as an Alternative

In certain scenarios, soil-nailed walls can be a viable substitute for the Micro-Berlin wall, offering:

  • Optimized Excavation Passes: Adjusting the sequence and depth of excavation phases.
  • Adaptation to Geotechnical Context: When stability constraints allow for a lighter solution.

This alternative can help reduce costs and execution times, while maintaining an appropriate level of performance.

Why Choose Acrobat X?

With extensive expertise in retaining structures and special foundations, Acrobat X offers:

  • Comprehensive Geotechnical Analysis: Ensuring the best-suited solution for your project (Micro-Berlin wall or soil-nailed wall).
  • Secure and Durable Implementation: Adhering to the highest technical standards.
  • Cost and Time Optimization: Tailored approaches to meet project-specific needs.

Contact Us Today

Let Acrobat X help you secure your excavation projects with precision and reliability. Contact us for a customized study and the implementation of the most effective retaining solutions.