ASTM C969 is the standard practice for infiltration and exfiltration acceptance testing of installed precast concrete pipe sewer lines and manholes. It provides a practical framework for evaluating whether these installed systems meet expected leakage-related acceptance criteria before a project is closed out. For contractors, engineers, and inspectors, this ASTM standard supports consistent testing, helps verify workmanship, and gives project teams a common basis for acceptance decisions.

Purpose of ASTM C969

The purpose of ASTM C969 is to guide acceptance testing for installed precast concrete pipe sewer lines and manholes by addressing infiltration and exfiltration conditions. As a standard practice, it focuses on how testing is applied in the field rather than on product manufacture. This helps project stakeholders evaluate installed sewer infrastructure using a consistent technical method, which may be important for quality control, specification compliance, and final project acceptance.

Common use cases of ASTM C969

ASTM C969 is commonly used during construction closeout, inspection, and acceptance testing of precast concrete sewer installations. It is relevant to sewer lines and manholes that need to be checked after installation to confirm acceptable leakage performance. The practice is often used by owners, municipalities, engineers, and testing personnel when reviewing field results and documenting compliance for underground wastewater or drainage infrastructure.

Why ASTM C969 matters

This standard matters because it helps reduce uncertainty in acceptance testing for buried concrete sewer systems. Using ASTM C969 can support more consistent testing procedures, clearer procurement requirements, and more reliable quality control decisions. It also gives project teams a recognized basis for comparing results and managing risk before a sewer line or manhole is put into service. For many projects, that consistency is essential to compliance and final acceptance.

• Acceptance testing for installed precast concrete sewer systems
• Infiltration and exfiltration evaluation
• Field testing of sewer lines and manholes
• Quality control and compliance documentation