ASTM D2924-24 PDF

Overview

ASTM D2924-24 is the internationally recognized Standard Test Method for External Pressure Resistance of Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe. Developed by ASTM International, this standard defines the laboratory procedures used to determine the resistance of fiberglass pipes, including both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP), to external pressure. The method classifies possible failures as buckling, compressive, or leaking, and is essential for ensuring quality, durability, and suitability of fiberglass piping under external pressure loads.

Key Topics

• Scope of Testing: Covers both RTRP and RPMP fiberglass pipes for assessing resistance to external pressure.
• Failure Classification: Differentiates between buckling, compressive failure, and leaking, allowing for precise analysis and reporting.
• Test Methodology:
  • Incrementally increasing external fluid pressure at controlled temperature.
  • Specimen instrumented for accurate measurement of volume changes and fluid displacement.
  • Classification of failure based on pressure-volume change data.
• Scaling Constants: After determination for one diameter, a scaling constant can be applied to other diameters if resin, reinforcement, wall thickness-to-diameter ratio, and reinforcement pattern remain consistent.
• Specimen Requirements: At least five representative specimens tested for reliable results.
• Reporting: Standardized reporting includes complete specimen identification, dimensions, test conditions, failure type, pressures, and calculation of scaling constants.
• Safety: Emphasizes that users must consider all applicable safety and regulatory practices before conducting tests.

Applications

ASTM D2924-24 serves multiple industries and applications where fiberglass pipe pressure resistance is a critical design and safety consideration. Common uses include:

• Municipal Water and Wastewater Systems: Verification of fiberglass pressure pipe reliability under soil and hydraulic external loads.
• Industrial Pipelines: Assurance of performance for chemical, process, and utility piping utilizing glass-fiber-reinforced thermosetting-resin systems.
• Energy Sector: Application in oil, gas, and power plant piping where pipes may be subjected to external pressure due to soil compaction or water table variations.
• Infrastructure and Construction: Critical for projects where underground fiberglass pipes must maintain integrity against external compressive forces.

By adhering to this ASTM standard, engineers and quality controllers ensure that only adequately tested and approved fiberglass piping is installed. This minimizes the risk of premature failure, ensures compliance with project specifications, and supports long-term infrastructure reliability.

Related Standards

For a comprehensive quality and specification program, ASTM D2924-24 is often used in conjunction with the following related standards:

• ASTM D883: Terminology relating to plastics, ensuring consistent use of technical terms.
• ASTM F412: Terminology relating to plastic piping systems.
• ASTM C33/C33M: Specification for concrete aggregates, relevant for RPMP pipes using aggregate.
• ASTM D618: Practice for conditioning plastics for testing, applied to ensure consistent test environmental conditioning.

Note: This standard is unique; it has no ISO equivalent as of this writing.

Practical Value

Implementing ASTM D2924-24 enables organizations to:

• Accurately assess external pressure resistance of fiberglass pipes.
• Predict performance and failure modes for long-term reliability.
• Satisfy regulatory and design requirements for safety and durability.
• Support infrastructure planning and system longevity by minimizing risk of catastrophic piping failures.

Using this test method enhances the quality assurance of glass-fiber-reinforced thermosetting-resin and polymer mortar pipe installations, supporting safe, robust, and sustainable engineering solutions.