How and Why Bridges Are Made to Move

Everyone talks about the weather, but it falls to civil engineers to actually do something about it. Weather and temperature affect everything we use, from car batteries to bridges. When temperature causes changes in structure, it’s referred to as thermal expansion or thermal contraction, and it’s a phenomenon. you have to carefully control for if […]

City Center DC: Tying Together the Roof and Building Envelope | 2014-01-01

CityCenterDC is a behemoth of a project. The mixed-use development was envisioned as the centerpiece of Washington, D.C., with a mix of condominiums, apartments, offices, public spaces, restaurants, shops and a hotel. The site is 10 acres and takes up four city blocks. There are six buildings that have a total of 2.5 million square […]

Expansion Joint Continuity of Seal — Watertight By Design · Sika Emseal

We’ve said it before: “Anyone can make an expansion joint watertight in cross-section. It’s at changes in plane and direction that they leak.” Sika Emseal’s process, from design to completion, is built around what we call “Continuity of Seal.” This simple principle ensures that joints don’t leak at transitions within and between joint technologies and […]