Hickman Butte Lookout Tower

Hickman Butte Lookout Tower

Cascade provided a structural evaluation and site review of a historic fire watch tower for the Portland Water Bureau.  The 65 year old wood framed tower is located in the Bull Run Watershed restricted area.  The structure is nearing the end of its service life, and...
Conduit Supports on Lewis & Clark Bridge

Conduit Supports on Lewis & Clark Bridge

Cascade provided structural design and construction documents for the installation of new communication conduits on this nearly mile long bridge.  The bridge is made up of several different sections, each constructed differently, and the support design was unique at...
Elsie Fire Station Seismic Evaluation

Elsie Fire Station Seismic Evaluation

The fire station chief hired us to provide a seismic evaluation of the existing 1970’s two story concrete masonry public firehouse structure. As part of the seismic rehabilitation grant program run by the State of Oregon, all public buildings are required to meet...
Tualatin Tank

Tualatin Tank

This 1 Million gallon welded steel municipal water reservoir had the compound design challenges of the highest Risk Category (Category IV), and a site specific seismic spectral acceleration much higher than what is typical for the region. The design employed an anchor...