Blogs

This article provides a thorough examination of how lateral pressure on retaining walls is influenced by various types of surcharge loading. It covers essential topics, such as uniform, point, line, and strip loads, and includes guidelines from standards like Caltrans, AASHTO, and NAVFAC. The guide offers practical equations and methodologies for accurately calculating the impact of surcharge loads on both rigid and flexible retaining walls, considering traffic, construction equipment, and foundation loads. This detailed resource is invaluable for civil engineers involved in the design and construction of stable retaining walls.

The Concrete Maturity Method is a non-destructive technique that estimates in-place concrete strength by correlating its age and temperature during curing. Developed in 1951 and recognized by ASTM C1074, this method provides real-time strength data, aiding in construction decisions like form stripping or paving openings. However, it has limitations, such as not accounting for variables like aggregate coatings that can affect strength. While not a replacement for traditional strength tests, the maturity method serves as a complementary tool, enhancing safety and the integrity of concrete structures.

In the first episode of Twining's vlog series, "Building Connections," Rob Ryan interviews Bob Goodwin. Bob shares his journey from his early life and education to his rise as a leading consultant. The episode highlights his contributions to his major projects, while also exploring the current challenges in the industry. Bob reflects on his proudest career moments, leadership style, and his ongoing work offering valuable insights for both industry professionals and enthusiasts.

Meredith Strows dives into the effects of Alkali-Silica Reaction and the importance of using petrographic examination.

Rob Ryan from Twining discusses the critical role of Charpy V-Notch Impact Testing (CVN) in the construction industry.

A hundred years ago, an oil boom contributed to Long Beach being the fastest growing city in America. Now, a century later, oil reliance has changed, and Long Beach is in a unique position to evolve from being an oil industry reliant economy by investing in the legacy businesses that have grown with the City.