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This landmark hotel located in downtown Boise was completely renovated and seismically upgraded. Several floors had to be reinforced and strengthened because of existing undersized structural members.
This historic dairy barn located on Whidbey Island, Washington was restored architecturally and structurally bringing the barn back to its original appearance. Structurally deteriorated members were replaced and a complete lateral upgrade was incorporated into the design using timber frames.
AHJ's role in this renovation project was to correct structural "life safety" deficiencies and to design needed structural framing for elements that were added to the facility (i.e. new elevator, new rooms, etc.). This building is listed in the national register of historic places.
These two existing building were constructed in the early 1900's and were originally used as a warehouse facility. Both buildings were constructed of unreinforced masonry with very extensive sawn lumber interior framing elements. The intent of this project was to remodel/renovate the buildings so they could be used for dance and music rehearsals/recitals. Practice rooms, elaborate formal recital halls and administrative offices were added to the interior of each building. The buildings were retrofitted for minimum code prescribed lateral forces using the Uniform Code for Building Construction (UCBC) to address life safety issues.
The Empire Building’s structure is a six-story timber frame with unreinforced masonry exterior walls. These walls are supported by steel columns and beams at the second floor, along Idaho and 10th streets, creating what is called a soft story. The structure basically had no resistance to lateral forces such as earthquakes and wind. Our goal was to design lateral force resisting elements that would not compromise the historical appearance of the Idaho and 10th street facades and also to be cost effective in our design. Our solution was to use the existing masonry as much as the code would allow resisting the lateral forces and then transferring those forces to new cast-in-place concrete moment frames from the second floor to the foundations along the Idaho and 10th street facades. These moment frames were designed to fit behind the existing narrow masonry piers.