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D2751-05 – Standard Test Method Technical Guide
The ASTM D2751-05 standard defines the requirements for acrylonitrile-butadiene-styrene (ABS) sewer pipe and fittings used in nonpressure drainage systems. This specification covers materials, dimensions, workmanship, and various performance tests to ensure reliability in sewer applications.
📐 Material Composition and Classification
Per Section 3.1.1 of the standard, ABS pipe and fitting plastics consist of polymers or blends with a minimum butadiene content of 6%, minimum acrylonitrile content of 15%, and minimum styrene or substituted styrene content of 15%. Other monomers, including lubricants, stabilizers, and colorants, are limited to a maximum of 5%. Pipe is produced by single extrusion or simultaneous multiple coextrusion.
| 🟦 Component | 📏 Minimum Content (%) | 📐 Maximum Content (%) |
|---|---|---|
| Butadiene | 6 | — |
| Acrylonitrile | 15 | — |
| Styrene or Substituted Styrene | 15 | — |
| Other Monomers | — | 5 |
⚙️ Test Methods and Performance Requirements
The standard references several ASTM test methods to verify dimensions, mechanical properties, and resistance. D2122 is used for dimensional measurements, D2412 for external loading characteristics via parallel-plate loading, and D2444 for impact resistance using a falling weight. Chemical resistance, water resistance, and joint tightness are also required per the specification.
| 🟦 Standard | 🎯 Test Method |
|---|---|
| D2122 | Determining Dimensions of Thermoplastic Pipe and Fittings |
| D2412 | External Loading Characteristics by Parallel-Plate Loading |
| D2444 | Impact Resistance by Falling Weight (Tup) |
| D3212 | Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals |
For installations, Practice D2321 provides guidelines for underground placement, ensuring structural integrity and performance.
📊 Compliance and Applications
Section 4 outlines that the pipe and fittings are suitable for nonpressure drainage of sewage, surface water, and certain liquid wastes outside building limits. Marking per the standard includes the D2751 designation along with manufacturer and size details to facilitate compliance verification. Industrial waste lines require specific approval due to potential chemical or temperature extremes.
Tip: Adhere to Practice D2321 for proper installation, including trench preparation and backfill, to ensure long-term performance of ABS sewer systems.
Warning: Note that industrial waste lines may encounter chemicals not commonly found in drains and temperatures above 80°C (180°F). Consult the cognizant building code authority before installation.
❓ Frequently Asked Questions
🔍 What is the minimum butadiene content for ABS pipe?
The standard mandates a minimum butadiene content of 6%.
💡 Are ABS sewer pipes suitable for all waste types?
They are designed for nonpressure drainage of sewage and surface water; industrial waste requires approval due to potential chemical and