ASTM F1698-21 PDF

Overview

ASTM F1698-21 is the standard practice published by ASTM International for the installation of Poly(Vinyl Chloride) (PVC) profile strip liner and cementitious grout for rehabilitating existing man-entry sewers and conduits. This practice outlines procedures for field-fabricated PVC liner installation and subsequent cementitious grouting, primarily aimed at non-pressure gravity sewer applications such as sanitary sewers, storm sewers, and large-diameter process piping.

This standard is intended for designers, specifiers, regulatory agencies, asset owners, and inspection organizations involved in pipeline rehabilitation. It provides guidance on transforming deteriorated sewer infrastructure into a rigid, composite structure by combining a newly installed PVC liner with specially prepared grout and the existing host pipe.

Key Topics

• PVC Profile Strip Liner Installation

  • Describes the materials and configuration of the PVC profile strips.
  • Outlines methods for fabricating liners in the field from continuous coils or pre-cut panels.
  • Details procedures for spiral winding or circumferential panel installation within host pipelines.

• Cementitious Grout Application

  • Provides guidelines for injecting grout into the annular space between the PVC liner and the original conduit.
  • Stresses the significance of full grout filling to ensure the finished composite structure’s integrity.

• Inspection and Acceptance

  • Recommends visual or closed-circuit television inspection post-installation.
  • Highlights the importance of verifying continuous lining, unobstructed flow, and proper sealing.

• Design Considerations

  • Discusses conditions for partially and fully deteriorated pipes.
  • Suggests general approaches for wall thickness and composite structure design tailored to specific site conditions.

• Safety and Compliance

  • Stresses adherence to confined space entry regulations and safety best practices.
  • Draws attention to the need for project-specific safety, health, and environmental precautions.

Applications

• Rehabilitation of Gravity Sewers and Conduits

  • Ideal for non-pressure pipelines with man-entry dimensions (typically 36 to 144 inches) where structural renewal is required without full replacement.
  • Applicable to both large-diameter sanitary and stormwater sewers, as well as process piping susceptible to structural degradation.

• Extension of Service Life for Aging Infrastructure

  • Provides a cost-effective, trenchless solution for extending the operational lifespan of existing pipelines by forming a strong, composite pipe structure.

• Asset Management and Regulatory Compliance

  • Assists municipalities and utilities in meeting regulatory requirements for sewer system integrity and infiltration/exfiltration control.

• Project Flexibility

  • Can be adapted for various pipe shapes and sizes with profile strips supplied as coils for spiral installation or flat panels for partial or complete circumferential lining.

Related Standards

ASTM F1698-21 references several key standards to ensure quality, compatibility, and safety, including:

• ASTM F1735: Specification for Poly(Vinyl Chloride) (PVC) Profile Strip for Liners.
• ASTM C942: Test method for grout compressive strength.
• ASTM D790: Methods for measurement of flexural properties of unreinforced and reinforced plastics.
• ASTM D883, D1600, F412: Terminologies relating to plastics and plastic piping systems.
• NASSCO Guidelines: Specification Guidelines for Sewer Collection System Maintenance and Rehabilitation.

By following ASTM F1698-21, stakeholders can ensure robust, long-lasting rehabilitation solutions for large-diameter, man-entry sewers and conduits, while maintaining best practices in materials selection, installation procedures, and safety compliance. This standard supports sustainable asset management strategies for critical sewer infrastructure.