This project deals with development of an online web based data collection tool for a Concrete Construction Process Capability (CPC) database, which illustrates the statistical distribution of geometric variation in concrete placement that occurs in the field. This database tool is intended to help gather current CPC data as part of a larger effort to better manage tolerances. The tool can be used by architects, engineers, contractors, owners, material manufacturers, and standard body organizations who work directly with or interface with Cast-in-Place (CIP) concrete elements. This tool has two main parts: (1) project participation (interested concrete contractors can register to participate) and (2) CPC data collection (participant can enter, view and update the as-built data into the database). The main motivation for developing this project was to overcome the significant limitations that are present in the existing data collection process by developing a web based data collection interface with a centralized database which can be accessed by any member anywhere and anytime. To make the complex data collection process as simple possible, Dr. Colin Milberg initially came up with an idea of an interactive spreadsheet document with CPC data, which has been available on the American Concrete Institute (ACI) web site only to the committee members. Nonmembers have to request a copy by email by contacting Dr. Milberg, which is more time consuming. Although it is quicker for real data entry, you only see one screen at a time, and in order, which makes it difficult to get a process overview.