Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: The Heavy Timber Buckling Restrained Braced Frame System as a Solution for Commercial Construction in Regions of High Seismicity

Source: Presentation: 2015 Mass Timber Research Workshop, Forest Products Laboratory (FPL), Madison, Wisconsin; November 3-4, 2015

Author(s): Blomgren, Hans-Erik; Koppitz, Jan-Peter; Valdes; Abel Diaz

Publication Year: 2015  View PDF »

Category: Presentations

Abstract: Wood construction has been traditionally utilized to reduce inertial demands in high seismic regions. Applications however are often limited to low-rise buildings of light-wood construction. Recent advancements in timber technologies are pushing mass timber systems into larger commercial scale markets where steel and concrete systems currently dominate the landscape. In high seismic regions, however, timber buildings currently lack code-defined lateral force resisting systems. This paper presents a new concept of a seismic force resisting system known as the Heavy Timber Buckling Restrained Braced Frame. The system is intended, although not limited, for application for tall building timber construction and is inspired by the unbonded brace technology today widely spread throughout Japan and the United States. In order to prequalify the system for future implementation in building codes, this paper first addresses component testing of a brace consisting of a steel core and a mechanically laminated glulam assembly acting as the buckling restraint mechanism. Test results are discussed, and implementation at the system level in an archetype building is addressed, in order to assess overall system performance, constructability, and detailing.

Keywords: Mass Timber Research Workshop, cross laminated timber (CLT), green building, forest restoration activities

File size: 5,425 kb(s)

Date posted: 11/18/2015

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »

Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »

Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »

Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »