Reinforced Concrete Pipe Specifications

Northwest Pipe Company manufactures RCP (Reinforced Concrete Pipe) at our Geneva Pipe and Precast facilities in Utah and other plant locations. Our pipe meets or exceeds all applicable local and national specifications and is manufactured in NPCA-Certified facilities. All pipe and fittings are designed and constructed in accordance with the best practices and comply with applicable specifications. As one of the strongest drainage products on the market, this durable and easy to install pipe is an excellent choice for both shallow and deep bury projects. We manufacture standard, elliptical, RCP for jacking, and specially designed reinforced concrete pipe and custom pipe fittings to meet a variety of applications.

Overview

Standard

AWWA C300, C302 and AWWA Design Manual M9 Concrete Pressure Pipe

Construct

A steel cage and or steel cylinder assembly is encased in cement-rich concrete using a vertical cast process. Dry cast using Type III/V Cement which meets the requirements for both Type III and Type V Cement.

Size

Standard diameters of 48” to 144” in lengths up to 12’. Wall thickness 2.25” through 9.75”. Larger diameters available.

Capacity

Internal pressure or buried pipe cover per project requirements. Maximum external loads and pressures depend on pipe diameter, wall thickness, and steel/cage reinforcement. Meets or exceeds 13 psi for straight connections and 10.4 psi for deflected connections.

Joints

Single offset joint with rubber gasket per ASTM C443; Bell-spigot (12” – 72”) and tongue and groove (72” – 96”). Profile or pre-lubricated gaskets.

Principle Uses

Typically used for the conveyance of sewage, industrial water, stormwater and for the construction of culverts. Applications include storm drains, sanitary sewers, culverts, underground stormwater detention systems, irrigation systems and treatment plant piping.

Elliptical Reinforced Concrete Pipe

Available in a variety of strength classes, our elliptical RCP meets or exceeds all applicable local and national specifications and is manufactured in NPCA-Certified facilities. This pipe is an excellent choice where height or width restrictions exist or where greater flow capacities or higher velocities are needed for shallow bury conditions or at low flows, respectively.

Standard

ASTM C507, AASHTO M207, ASTM C990

Construct

Dry cast using Type III/V Cement which meets the requirements for both Type III and Type V Cement.

Size

Standard vertical elliptical pipe in nominal equivalent RCP diameters of 18” to 54”. Standard horizontal elliptical pipe in nominal equivalent RCP diameters of 38” to 54”. 8’ lay length for all sizes.

Joints

Steel bell band joint design with confined O-ring gasket per ASTM C443. Designed to withstand 50 psi pressure.

Principle Uses

Elliptical pipe is an excellent choice when faced with height or width restrictions, or when a system needs greater flow capacity for shallow bury conditions.

Reinforced Concrete Microtunneling Pipe

The quality of the pipe plays and important role in completing a successful trenchless installations. Our pipe can be custom designed to meet project specific specifications. Utilizing a wet cast manufacturing process, we are able to produce pipe with very close tolerances that is equal or higher quality than any other reinforced concrete microtunneling pipe worldwide.

Standard

ASTM C76, ASTM C655, ASTM C443, ASTM C361, AASHTO M170, AASHTO M242, AASHTO M198, ASCE 27

Construct

Wet cast using self-consolidating concrete.

Size

Standard diameters ranging from 36” to 96”. Additional diameters available. For any specific diameter outside of this range, please contact our sales team.

Joints

Steel bell band joint design with confined O-ring gasket per ASTM C443. Designed to withstand 50 psi pressure.

Principle Uses

Microtunneling pipe is the product of choice when trying to avoid any disruption created by typical open cut construction practices.

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