Pit Construction

Site Selection and Preparation

• The pit location must be free from underground services or structures.
• Any existing services within the pit area must be identified and relocated.
• The proposed site must be trimmed and leveled to provide a stable working platform.
• A competent surveyor is required to set out the exact position for construction.

Construction Sequence and Safety

• Pits must be constructed following a proper sequence to ensure structural quality and worker safety.
• Measures should be taken to protect adjacent structures during the construction process.

Open Caisson Applications

• Open caissons are suitable for soft ground conditions or areas with high water tables where open trench excavations are not feasible.
• They are commonly used for – Deep manhole installations; Reception and launch pits for microtunnelling and pipe jacking; Other trenchless operations.

Advantages of Microtunnelling

• Enhanced Accuracy: Pipelines installed using microtunnelling are more precise than those laid with open trench methods.
• Improved Safety: Minimizes risks to workers by reducing the need for onsite labor in confined spaces.
• Environmentally Friendly: Reduces surface disruption and eliminates extended open trenches.
• Versatile Application: Suitable for nearly all ground conditions with customizable equipment configurations.