Climbing – Arup


Ascent, at 284 feet, is the tallest log building in the world. The 410,000 feet2 The residential tower designed by Korb + Associates Architects and developed by New Land Enterprises houses commercial spaces, amenities and more than 230 apartments. Arup provided facade engineering and fire safety engineering consultancy services which were instrumental in advancing the project through building code approvals.

Despite the material’s notable durability benefits, high-rise solid wood has yet to be popularized in the United States, in part due to restrictive code requirements at the time of planning and design. The lack of a building code for log buildings over six stories in Milwaukee was an obvious obstacle for Ascent, which rises to 25 stories.

Arup consulted regularly with the Department of Neighborhood Services, which authorized construction, to develop an approval roadmap for the project. Arup conducted extensive analyzes and studies to demonstrate that the building would comply with safety requirements and provided the client with strategies to mitigate fire risks.

As the tallest building of its type in the world, Ascent raises awareness in the United States about fire safety and the sustainability of mass timber structures.

Project summary

tallest log building in the world

410,000ft²residential tower with commercial space and amenities

$80 million building cost


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