One of the most important tools for a successful project is a clear, concise, accurate specification that is written so that it cannot be misunderstood. Guidance is provided for proper use of “Specifications for Structural Concrete (ACI 301-10)” and other specification reference documents. Specific recommendations include using only those reference documents that are written in mandatory language and provide specific instructions to the contractor

A concrete retaining wall stem is usually battered to reduce the concrete dead load on the footing. The placement of the vertical dowel bars and the vertical reinforcing bars is dependent on the retaining wall configuration—sloped, stepped, and/or uniform top wall thickness. When the wall batter is factored into the geometry, the reinforcing bar location is not straightforward and should be detailed appropriately on the drawings

It is our pleasure to congratulate individuals who have supported ACI for 25 and 45 years. The support these individuals have shown represents a level of interest and improvement in concrete technology that is the backbone of the Institute. Members like these have made and continue to make ACI a vibrant and diverse organization and lend stability to the Institute. Their unwavering support over the years has helped make ACI the global knowledge leader on concrete