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Purdy Creek Fish Barrier Removal

In the Pacific Northwest, management of natural resources, including the extensive network of streams and rivers, are of utmost concern. We rely on these resources for generating power, food, drinking water, and transportation of goods, and many local economies are dependent on their long-term sustainability. As growth and expansion continues, management of these resources becomes…

International Women in Engineering Day

On this Women in Engineering Day, I have been reflecting on how I got to where I am. I found myself in the field of engineering with the help of parents who encouraged me and supported my curiosity about engineering. As a 5th grader I…

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Emergency Storm Drain Repair

  Before joining the team here at D.H. Charles Engineering, I had only briefly heard of excavation shoring. Dig a hole, install supports, and ensure that the walls of soil don’t cave in. Although that is technically true, it barely scratches the surface of just…

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Deception & Canoe Pass + San Rafael Bridge

Designing a suspended platform system presents unique challenges not commonly seen in other lines of engineering, which requires a different kind of in-depth plan behind each design. Like a well-constructed spider web, suspended platform systems typically consist of efficiently placed cables and chains working both…

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Willamette Water Supply Project

The Willamette Water Supply Project is a $1.6 billion water conveyance pipeline project in Oregon. Pipeline construction began in 2016, and when substantially complete in 2026, will provide fresh drinking water, capable of meeting current and future needs, while ensuring resiliency, protection of public health,…

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California High-Speed Train – Tule River Viaduct

DHC does not shy away from high profile projects, and in the state of California, High-Speed Rail is among the biggest and most anticipated projects the state has seen in decades. With the introduction of a high-speed rail system, the state could finally feel a…

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1850 Alice – Overcoming Challenges

Washing windows. It sounds straight forward – grab a squeegee, a bucket of soapy water, and start washing. Now how about washing windows on the outside face of a 12-story building? Things tend to get a little more complicated.   The best time to implement…

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Engineering the Pan American Games

The Pan American Games is a multi-sport competitive event preceding the Summer Olympic Games by 1 year, every 4th year. Each event hosts thousands of the top athletes from the nations of the North and South American continents. Spectators flock to see the various events…

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The EPIC Phase II

DHC had worked with MDM on a 20’ cantilever design through Covid. There was a little back and forth, but we came up with a clean design that worked structurally and was feasible for that particular job. Fast forward a few weeks and we get…

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Tunneling Engineering 101

At DHC, we try our best to be the construction engineers that you can come to for any design on a construction site. So, when a contractor comes to us to design a jack and bore shoring system, we can help you make sure your…

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