ASTM C139 is the ASTM standard that addresses dry-cast concrete masonry units for construction of catch basins and manholes. It provides a technical basis for identifying products intended for these underground structures and supports consistent specification and procurement. By defining the requirements around this masonry unit type, the standard helps buyers, manufacturers, and engineers compare products more reliably and maintain alignment with project expectations for utility and drainage installations.

ASTM C139 standard overview

The ASTM C139 standard focuses on dry-cast concrete masonry units used in catch basins and manholes, which are common components in drainage and access structures. As a product specification, it is intended to guide the acceptance and description of units made for this application. This makes it useful when selecting materials for precast-style construction or related masonry systems where consistency, fit, and documented compliance are important to the project.

Where is ASTM C139 used?

ASTM C139 is commonly used in the planning, purchasing, and evaluation of concrete masonry units intended for catch basins and manholes. These structures are typically part of stormwater, sewer, or utility access work, where dependable construction materials are needed below grade. The standard is especially relevant when project documents call for dry-cast units and when suppliers and specifiers need a clear technical reference for product description and acceptance.

Practical importance of ASTM C139

ASTM C139 matters because it supports more consistent product selection and quality control for masonry units used in critical underground structures. Using a recognized ASTM standard can help reduce ambiguity in procurement, improve comparison between suppliers, and support compliance checks during specification review. For projects involving catch basins and manholes, that clarity can be valuable for minimizing risk and keeping materials aligned with expected construction requirements.

• Dry-cast concrete masonry units
• Catch basin and manhole applications
• Specification and procurement reference
• Quality control and product evaluation
• Underground utility and drainage structures