Braun Intertec used the COMMAND Center concrete temperature and maturity system to expedite post-tension stressing and meet a tight construction deadline.
The Terraces at Douglas Center is a new 12-story office tower in Dallas with a two-level basement parking garage. It’s made of concrete structural elements and has a steel-framed roof level area. The building is named for the upper floor balconies which feature an open view of north Dallas.
Braun Intertec—a geotechnical engineering, environmental consulting, and testing firm—provided construction materials testing and special inspections for the project. Braun Intertec is committed to innovating for clients and delivering highly valued engineering, consulting, testing and design solutions. They initiated the use of COMMAND Center concrete temperature and maturity meters on the Terraces at Douglas Center project to measure concrete strength in real-time in order to expedite post-tension stressing and meet a tight construction deadline.
In-situ strength estimation is often achieved through flexural or compressive strength tests of beam or cylinder specimens in accordance with standard test methods. It’s assumed the test specimens are representative of the same concrete that is placed in the field. If testing of the specimens determines design strength has been achieved, then it is assumed that strength has been achieved in the field, as well. However, assuming that concrete in the field gains strength at the same rate as test specimens is not always the case.