ASTM C946 is the standard practice for construction of dry-stacked, surface-bonded walls. It provides a technical framework for building this type of wall system in a consistent and controlled way, helping support sound construction decisions and better project coordination. For contractors, specifiers, and purchasers, ASTM C946 is useful because it defines a recognized practice for work that depends on proper stacking, bonding, and overall wall assembly quality.

ASTM C946 standard overview

The Standard Practice for Construction of Dry-Stacked, Surface-Bonded Walls addresses the methods and procedures associated with assembling walls built without traditional mortar joints, then surface bonded to create the finished system. As an ASTM standard, it serves as a practical reference for construction requirements and jobsite consistency. ASTM C946 is especially relevant when a project needs a documented approach for building these walls in line with accepted technical practice and quality expectations.

Where is ASTM C946 used?

This standard is commonly used in projects involving dry-stacked wall construction where a surface-bonded finish is specified. It may be referenced by builders, inspectors, designers, and suppliers working with wall units and related construction materials in residential, commercial, or similar low-rise applications. ASTM C946 helps align the construction workflow with a recognized practice, making it useful during planning, installation, review, and acceptance of the wall system.

Practical importance of ASTM C946

ASTM C946 matters because it supports consistent construction practices for a wall type that depends on accurate assembly and bonding. Using the standard can help improve compliance, reduce ambiguity in specifications, and support quality control during installation. It also gives procurement and project teams a clear technical reference when evaluating whether a dry-stacked, surface-bonded wall approach matches project requirements and performance expectations.

• Dry-stacked wall construction practice
• Surface-bonded wall assembly guidance
• Quality control and installation consistency
• Specification and compliance reference
• Project review and acceptance support