MORE INFORMATION
Concast’s rectangular monobox maintenance holes (MH) are a highly efficient and durable solution for managing access points to underground utilities, drainage systems, and other infrastructure projects. These maintenance holes are designed with precision and innovation to provide a strong, long-lasting structure that can withstand the most demanding environmental conditions. The monobox maintenance holes consist of two primary components: the monobase and the monotop. Both components are constructed with advanced manufacturing techniques that ensure ease of installation, strength, and the ability to accommodate larger pipe and box units connections. Secondary monobox risers can be added into the construction of the monobox maintenance hole.
Monolithic Base and Top Components
A key feature of the rectangular monobox maintenance hole is the monolithic construction of both the base and the top. This means that the base and top sections are poured in one continuous process, creating a seamless and sturdy structure with minimal joints.
BENEFITS
- Quick installation, since the entire structure only consists of a top half and a bottom half
- Much larger pipe can be accommodated since all lift points are on the horizontal slabs
- Most sections can be produced with large hole openings, eliminating any concrete pucks to be removed and disposed of on-site
- Monobase: The monobase consists of the four walls and the base slab, all poured together as a single, unified piece of concrete. This monolithic approach ensures superior strength and stability, as there are no separate joints between the walls and the base, reducing the risk of leaks or structural failure. The absence of joints also simplifies installation, as the base is essentially a single piece that is easy to position and align.
- Monotop: Similarly, the monotop is a top slab that is cast with the four walls, forming a single, continuous piece. When combined with the monobase, the monotop and monobase form a complete chamber with only one joint between the top and the base. This highly efficient construction method ensures a tight, secure fit that is more reliable and durable than traditional maintenance hole designs, which often require multiple joints.
Standard Sizes and Custom Capabilities
Concast offers several standard sizes for the rectangular monobox maintenance holes, which can be selected based on the project’s specific requirements. These sizes are as follows:
- 2400mm x 1800mm
- 3000mm x 2400mm
- 3900mm x 2400mm
- 3900mm x 3000mm
Each of these standard dimensions provides ample space to accommodate a range of infrastructure systems, from stormwater drains to sewage and utility lines. In addition to the standard sizes, Concast has the capability to manufacture specialty-sized monobox maintenance holes to meet the specific needs of unique or complex projects. Whether the requirement is for non-standard dimensions, deeper chambers, or specific configurations, Concast can create custom solutions tailored to your project’s unique specifications.
Adjustable Height for Flexibility
The height of each monobase and monotop can be easily adjusted in 150mm increments, allowing for flexibility in how deep the manhole chamber is installed. This adjustability makes the monobox system suitable for a wide variety of site conditions, whether the project is located in an area with varying ground levels or requires a precise elevation for utility access. This modularity allows engineers and contractors to fine-tune the system to the exact specifications required, reducing the need for additional on-site customization or modifications.
Shiplap Joint Design
Each monobox maintenance hole is designed with a shiplap joint for easy and secure connection between sections. The shiplap joint is a type of interlocking connection that ensures the manhole sections fit together tightly, reducing the risk of water ingress, leaks, or structural instability. The interlocking nature of the shiplap joint enhances the overall integrity of the structure, providing a solid and durable seal between the top and bottom sections. Additionally, this joint can be to be filled with mastic joint material. The mastic material fills any minor gaps within the joint, further enhancing the watertight seal and ensuring that the manhole maintenance hole remains robust and is leak-resistant over its lifespan.
Benefits of Rectangular Monobox Maintenance Holes
- Streamlined Construction
- Large Opening Connection Capacity
- Customizable to Project Needs
- Increased Durability
- Ease of Installation
- Versatility
Whether you need standard sizes or a specialty configuration, Concast’s monobox maintenance holes can be tailored to meet the specific requirements of your project. Reach out today to learn more about how these innovative precast structures can improve the efficiency and longevity of your infrastructure project.
APPLICATIONS
Maintenance holes where pipe sizes are too large for a circular structure
Stormwater management structures
Underground storage tanks
Oil/grit separators and septic tanks
Watermain Chambers
Electrical Chambers
