Prima Base™ Monolithic Manholes

County Materials’ Prima Base" Monolithic Manholes are state-of-the-art, high-precision manhole bases manufactured to deliver unmatched quality in sanitary sewer and stormwater management systems. Designed to handle complex, customized channel layouts, Prima Base transforms intricate geometry that once required extensive field shaping into a seamless, factory-controlled solution with consistent channel appearance. Channels, inlets, and outlets are manufactured to exact project-specific dimensions and precise locations, ensuring reliable alignment and reducing the need for onsite adjustments. Advanced 3D design software creates optimized channel geometry, combined with a smooth interior surface and controlled channel depth, to promote efficient, uniform flow.

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Prima Base Achieves Precise, Customized Channel Layouts

Engineered with advanced 3D design software and manufactured with a single-pour construction process, the Prima Base Monolithic Manhole provides smooth, accurately formed flowlines with no finishing required.

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Campuses and Parking Lots

Commercial properties choose the Prima Base Monolithic Manhole to handle complex, customized channel configurations in sanitary sewers and stormwater systems. Composed of a sustainable, high-performance concrete mix that eliminates cold joints, Prima Base boosts strength and durability. Inverts are precisely milled to ensure an exact fit and optimal flow. Smooth surfaces and accurate channel shaping are integral to Prima Base, reducing labor costs while ensuring reliable performance for properties with landscapes and parking areas.

Roadways

Prima Base Monolithic Manholes provide complex, customized channel designs for sanitary sewers and stormwater drainage systems along roadways and highways. Prima Base uses a sustainable, high-performance concrete mix that eliminates cold joints, improving strength and durability. Inverts are precisely milled for an accurate fit and an efficient flow. Smooth surfaces and precise channel shaping are built into Prima Base at the outset, reducing labor while ensuring consistent performance for critical roadway and highway infrastructure.

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Access Roads and Pedestrian Areas

Residential properties rely on Prima Base Monolithic Manholes to manage complex, customized channel layouts for sanitary sewers and stormwater applications. Formed with a sustainable, high-performance concrete mix that eliminates cold joints, Prima Base offers enhanced strength and durability. The inverts are carefully milled for precise alignment and an optimal flow. Smooth surfaces and accurate channel shaping are integrated into Prima Base from the start, minimizing labor costs for residential complexes while performing reliably.

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Highways and Railways

Highway and railway systems depend on Prima Base Monolithic Manholes to accommodate complex, customized channel configurations for sanitary sewers and stormwater systems. Prima Base eliminates cold joints by using a sustainable, high-performance concrete mix that improves both strength and durability. Precisely milled inverts ensure a snug fit and optimal flow. Accurate channel shaping and smooth surfaces are built into Prima Base from the start, to reduce labor costs and boost performance for highway and railway surface drainage systems.

Multifamily Developments

Prima Base Monolithic Manholes are installed in multifamily developments to provide access to complex, customized channel configurations for sanitary sewers and stormwater applications. Prima Base is made of a sustainable, high-performance concrete mix that eliminates cold joints to improve strength and durability. Precision-milled inverts provide proper fit and efficient flow. Smooth surfaces and accurate channel shaping are integrated into Prima Base at the outset, minimizing labor costs and maximizing performance for multifamily developments

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Utilities Access

Prima Base Monolithic Manholes incorporate intricate, customized channel designs for sanitary sewers and stormwater drainage systems in a variety of applications for utilities. Prima Base is made with a sustainable, high-performance concrete mix that eliminates cold joints, enhancing both strength and durability. Inverts are precisely milled to ensure an exact fit and an optimal flow. Smooth surfaces and accurate channel shaping are integral to Prima Base, which reduces labor costs and ensures reliable performance for utilities.

The Benefits of Prima Base Monolithic Manholes

A precise, customizable solution designed to handle complex channel layouts for sanitary sewer and stormwater systems, the Prima Base Monolithic Manhole offers many key benefits.

Precise Custom Dimensions

The channel, inlets, and outlets are carefully manufactured and milled to precise dimensions and locations, according to specific project requirements.

Optimized Flow

A combination of smooth surface texture, controlled channel depth, and precise channel geometry generated by advanced 3D design software optimizes the flow.

Eliminates Cold Joints

Prima Base uses a sustainable, high-performance concrete mix that eliminates cold joints, improving strength and durability.

Long Life Span

A sustainable, high-performance concrete mix is utilized to eliminate cold joints, enhancing strength and long-term durability.

Consistent Channel Appearance

Manufactured to meet ASTM C-478 standards, Prima Base has a consistent channel appearance, regardless of intricacy.

Channel Depth Control

Variable inlet and outlet heights, as well as flexible pipe penetration options, are produced in a single casting.

Proven Performance Across Diverse Markets

County Materials’ Prima Base™ Monolithic Manholes are a state-of-the-art, high-precision manhole base that delivers unmatched quality in sanitary sewer and stormwater management systems across a wide range of applications.

View Commercial Solutions

Commercial

For campuses, parking lots, and commercial developments, Prima Base Monolithic Manholes provide precise, factory-formed channel configurations that eliminate the need for field shaping and reduce installation labor. County Materials offers a broad range of complementary precast and concrete solutions to support commercial infrastructure with dependable performance and coordinated project execution.

View Multifamily Solutions

Multifamily

For multifamily developments, Prima Base Monolithic Manholes provide accurate, preformed channel configurations that reduce installation time and eliminate field labor associated with traditional bases. Smooth surfaces and optimized flowlines improve performance across complex site layouts. County Materials offers complementary precast and concrete solutions to support multifamily developments.

View Municipal Solutions

Municipal

In municipal roadway and public infrastructure projects, Prima Base Monolithic Manholes deliver consistent quality through single-pour construction, eliminating cold joints and improving long-term durability. Precision manufacturing reduces field adjustments while supporting optimized flow and reliable system performance. County Materials provides a comprehensive range of precast and concrete solutions to support municipal projects with efficient installation and dependable results.

View Parking Solutions

Parking

Parking structures benefit from Prima Base Monolithic Manholes through precise, factory-formed channel configurations that support efficient stormwater management. Single-pour construction eliminates cold joints while improving durability and long-term performance in high-traffic environments. County Materials offers a broad range of complementary precast and concrete solutions to support parking infrastructure projects with coordinated delivery and dependable service.

View Residential Solutions

Residential

For residential developments, Prima Base Monolithic Manholes simplify installation with accurate, factory-controlled channel layouts that eliminate field finishing and reduce labor demands. Durable construction and precise invert alignment support efficient flow and long-term infrastructure reliability. County Materials offers integrated precast and concrete solutions to support residential projects with consistent quality and coordinated delivery.

View Utilities Solutions

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Utilities

Utilities infrastructure benefits from Prima Base Monolithic Manholes through precise, factory-manufactured channel systems that improve flow performance and eliminate the need for field finishing. Single-pour construction enhances strength and long-term durability, supporting reliable system operation. County Materials provides a comprehensive range of precast and concrete solutions to support utilities projects with coordinated delivery and consistent results

View Transportation Solutions

Transportation

Transportation infrastructure projects rely on Prima Base Monolithic Manholes for precise channel geometry and smooth, efficient flow in highway and rail drainage systems. Factory-controlled production minimizes variability and eliminates the need for onsite grinding or shaping. County Materials provides a full range of precast and concrete solutions to support transportation projects with reliable performance and coordinated execution.