OUR SERVICES
SEWER CONNECTIONS
*New connections
*Repair of existing
HEADINGS
*Modification of existing sewers
*Deep drainage excavations
SHAFT CONSTRUCTION
*PCC Manholes & Caisson Shafts
*Sheet Piling & Shaft refurbishment
info@novasevencivils.co.uk
SEWER CONNECTIONS & DIVERSIONS
VIA TIMBER HEADINGS
Connecting to drains is indeed a specialized task that must adhere to specific regulations to ensure the integrity of the main sewerage system and prevent damage. Proper connection to a main sewer is essential for safely channeling surface water and waste away from a property, preventing potential environmental hazards or property damage. After the connection work is completed, it's crucial to obtain a certificate from the relevant water authority to certify compliance with regulations and ensure the proper functioning of the drainage system.
Installing or replacing underground drainage pipe systems is a significant undertaking that often requires the expertise of professionals. The success of such a project depends on thorough preparation, including learning about the different types of underground drainage pipes available, understanding safety requirements, and mastering installation techniques.
SHAFT SINKING
Sinking a shaft involves excavating a vertical or near-vertical tunnel from the surface of the ground downwards. This process can be conducted either on-site or in road and footpath areas. It's a crucial step in various construction projects, including tunneling, mining, and underground infrastructure development.
In our operations, we prioritize close collaboration with our clients to deliver optimal solutions. This collaboration ensures that we consider both the value and practical aspects of the project. By working closely with our clients, we can tailor our approach to meet their specific needs and requirements while maintaining efficiency and cost-effectiveness. Our goal is to provide the best possible solutions that not only meet but exceed our clients' expectations.
OPEN CUT EXCAVATION
The open cut trench method is a commonly used technique for repairing or replacing underground pipes. It involves excavating down to and exposing the existing pipe so that necessary maintenance or replacement work can be carried out. Once the work on the pipe is completed, the trench is backfilled, restoring the ground surface. If the open cut trench excavation is located in a non-pavement area, such as a grassy area, the excavation can be backfilled with soil, and the surface vegetation can be restored by seeding or laying sod. This ensures that the natural landscape is preserved and that the area is restored to its previous condition as much as possible. This approach minimizes disruption to the environment while still allowing for essential maintenance or replacement of underground infrastructure.
UNDERPINNING
Underpinning is a construction technique used to strengthen and stabilize the foundations of an existing building or other structure. This process is essential when the original foundation is no longer strong enough to support the structure or when the usage of the structure has changed, leading to increased loads on the foundation. Underpinning is also used to remedy foundation issues caused by changes in soil conditions, natural disasters, or nearby excavation.
Here is a detailed description of the underpinning process:
- Foundation Failure: The existing foundation is not stable or strong enough.
- Structural Changes: Increased loads from adding additional stories or changing the use of the building.
- Soil Conditions: Changes in the soil supporting the foundation, such as shrinkage, swelling, or erosion.
- Adjacent Construction: Nearby excavation or construction activities affecting the stability of the foundation.
- Natural Disasters: Earthquakes, floods, or other events compromising the foundation.
DEEP DRAINAGE
We specialize in a wide range of drainage system installations, catering to various needs and scenarios. Our expertise extends to installing deep drainage culverts, carriageway drainage systems, sewer connections (including those within highways), box culverts, and foul sewer diversions. Additionally, we are equipped to handle standard surface and foul water drainage systems. This comprehensive range of services demonstrates our capability to address diverse requirements related to drainage infrastructure. Whether it's for large-scale projects involving major highways or more localized installations, our teams have the expertise and experience necessary to deliver efficient and effective solutions.
REMOVAL OF DRAINAGE & INTERCEPTOR TRAPS
Drain interceptors or drain separators play a crucial role as the last line of defense in drainage systems. They are specifically designed to prevent contaminants from commercial and industrial sites, such as production facilities, storage areas, and car parks, from causing pollution hazards by entering the drainage network.
In the event of blockages or malfunctions, it's essential to address these issues promptly to maintain the effectiveness of the drainage system and prevent environmental harm. Our company offers services to remove drain interceptors or separators to mitigate potential blockages and contamination risks. Additionally, we are equipped to install new pipe branches or demarcation chambers as needed, ensuring the continued functionality and regulatory compliance of the drainage infrastructure. By providing these services, you contribute to maintaining the integrity of drainage systems and safeguarding the environment from potential pollution hazards originating from commercial and industrial activities.
CAISSON SHAFTS
Our range includes two types of segmental shafts designed to accommodate both caisson and underpin installation methods, providing flexibility to address different soil conditions.
- Caisson Method: This method is ideal for soft soil conditions. In this approach, the shaft rings are constructed above ground and then pushed down from the surface using jacking force. This technique allows for the creation of shafts even in soil conditions that might otherwise pose challenges. By constructing the shaft rings above ground and then lowering them into place, this method can be particularly effective in areas where soil stability is a concern.
- Underpin Method: The underpin method offers similar strength and benefits to the caisson method but is better suited for hard soil conditions where shaft jacking may not be feasible. Instead of constructing the shaft rings above ground, this method involves progressively building them at the base of the excavation. This approach allows for the creation of stable shafts even in areas with harder soil conditions, ensuring the structural integrity of the installation.
By offering both caisson and underpin installation methods, our range of segmental shafts caters to a variety of soil conditions, providing versatile solutions for different construction scenarios.
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