ASTM C985-22 PDF

Overview

ASTM C985-22: Standard Specification for Nonreinforced Concrete Specified Strength Culvert, Storm Drain, and Sewer Pipe provides essential criteria for the design, manufacturing, and quality assurance of nonreinforced concrete pipes used in stormwater, sewage, and industrial waste conveyance, as well as culvert construction. Developed by ASTM International, this standard outlines pipe strength requirements and testing protocols to ensure reliable performance for infrastructure applications. ASTM C985-22 is strictly a manufacturing and purchase specification, focusing on the pipe itself rather than installation or field load conditions, which must be carefully managed by project owners and contractors for successful in-service performance.

Key Topics

• Scope and Purpose: Covers nonreinforced concrete pipe of specified strengths for sewage, industrial wastes, stormwater, and culvert applications.
• Design and Manufacturing: Details the required design parameters, manufacturing process, allowable materials, and physical characteristics such as diameter, wall thickness, joint details, and admixture types.
• Strength and Load Testing: Specifies sampling strategies and test methods, particularly the three-edge bearing strength test, to verify that pipes meet the specified performance criteria before use.
• Quality Assurance: Addresses acceptance and rejection criteria based on observed defects, surface quality, and conformity to physical and mechanical requirements.
• Marking Requirements: Outlines product identification procedures, including strength classification, date of manufacture, manufacturer information, and plant identification.
• Repair and Disposition: Provides guidelines for the repair of minor manufacturing imperfections and accepted procedures for handling rejected lots in consultation with the owner.

Applications

ASTM C985-22 is broadly applicable in various public works and civil engineering projects requiring:

• Storm Drainage Systems: Used to channel stormwater effectively, minimizing urban flooding risks.
• Sewer and Waste Conveyance: Integral for municipal sewage and industrial waste pipes where reinforced designs are unnecessary.
• Culvert Construction: Serves as a durable and economical solution for culverts under roadways, driveways, and embankments, demanding reliable hydraulic performance and structural integrity.
• Infrastructure Projects: Suited to locations where nonreinforced concrete pipe’s inherent strength meets or exceeds the field loading conditions when paired with appropriate bedding and backfill.

This standard is relevant to engineers, contractors, manufacturers, and project owners seeking clear, consistent criteria for nonreinforced concrete pipe procurement, quality control, and acceptance.

Related Standards

• ASTM C497: Test Methods for Concrete Pipe, Concrete Box Sections, Manhole Sections, or Tile - referenced for strength and load testing.
• ASTM C33/C33M: Specification for Concrete Aggregates - requirements for aggregate materials.
• ASTM C150/C150M: Specification for Portland Cement - establishes cement compliance.
• ASTM C595/C595M: Specification for Blended Hydraulic Cements - for alternative cementitious materials.
• ASTM C618: Specification for Fly Ash and Natural Pozzolan for Use in Concrete.
• ASTM C822: Terminology Relating to Concrete Pipe and Related Products.
• ASTM C985M: Metric companion standard to C985, providing equivalent requirements in SI units.

By adhering to ASTM C985-22, stakeholders ensure that nonreinforced concrete pipes supplied for critical infrastructure applications meet rigorous, internationally recognized quality and performance benchmarks, facilitating resilient and sustainable water management solutions.