The next speaker's topic is sure to be interesting, with the December 13 Future Fuel technical event, as mentioned in a previous post. Be sure not to miss it!
Also, please note the calendar has had to change recently, so if you had subscribed to our past calendar and it is no longer working, please go over to the Events Calendar tab and subscribe to the new one. We had to make a change for a back end platform tweak.
ADD SAE NW's MEETING
TO YOUR CALENDAR:
SAE NW Technical event: Engineering Challenges of Placing Light Rail
across a Floating Bridge with John Sleavin, Deputy Executive Director of
Design Engineering and Construction Management at Sound Transit is
on Dec 7 at 5PM PST.
Running light rail over a floating bridge has never been done before
anywhere in the world. Sound Transit will be the first agency to ever do
this. Installing light rail across the flexing, twisting I‑90 Lake
Washington Floating Bridge presented a host of unique engineering
challenges including weight limitations, ensuring electric-powered
trains could travel safely across a large body of water, and more. We’ll
cover a few of them and go into detail on how they placed light rail
tracks from the fixed bridge to the floating bridge across eight
transition joints, each of which had to accommodate six degrees of
movement. We’ll trace the engineering challenges from early concept,
through design, testing, and installation.
John Sleavin’s engineering career includes an impressive array of
transportation projects, including several in Malaysia, Singapore, and
Portland. In Seattle, the projects he’s been involved with are almost
the history of major engineering projects within the region. They
include Link Light Rail in Tacoma, the South Lake Union Streetcar,
Sounder Commuter Rail between Seattle and Tacoma, the original Downtown
Seattle Transit Tunnel, construction of the light rail segment from
downtown to the airport including Beacon Hill tunnels, the University
and Northgate Link Extensions, and the 14-mile East Link Extension which
includes the I‑90 Floating Bridge. Currently John oversees Link
Extensions to the Tacoma Dome, West Seattle, Ballard, and Everett, and
Operations and Maintenance Facilities North and South.