The Return of the SG3 Blog
It's been awhile...
With Dolejsi Design’s able assistance, we once again have a web space of our own to share thoughts and reflections about our work within the City of Seattle’s municipal utility realm. A lot has happened since the last blog post, like the onset of a global pandemic and economic downturn, the completion of the major SDOT Move Seattle project we were involved in, plus plenty of ongoing progress on the Waterfront Seattle program.
The South Lander Grade Separation was opened for operation during the Summer of 2020. It was satisfying to see it spring into action after years of detailed work.
Photo courtesy Seattle DOT
Scott’s favorite reflection on the project is the recollection of watching the driller install 10-foot-diameter shafts 180 feet deep just inches from the 96” sewer and 90” storm mains, with no deflection or damage.
This structural drawing shows the extremely tight tolerances
A massive drilling platform protected the critical storm and sewer mains from the rotational forces of the oscillating drill and the vertical load of the equipment and the downward force from the casing pull.
Drilling platform
Those were some big shaft cages
Some other Lander St. elements to be touched upon in a future post include:
- Using ERDIP pipe
- Boring in fill areas
- HDPE water casing flexed over pipes and under walls
Our work as Utility Coordination Lead on the Waterfront Seattle program continues. The City of Seattle declared it a priority infrastructure project back at the beginning of the COVID shutdown, so construction has moved forward despite the limitations and restrictions involved, with much attention to health and safety.
Waterfront Seattle, overlooking the Aquarium addition, Pine Street reconfiguration and approach to Elliott Way
Looking north from South Washington Street
Alaskan Way nearing completion, looking north from King Street
In coming weeks and months, we’ll provide updates and reflections on the project as downtown Seattle’s waterfront transformation continues. Stay tuned for future entries!
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