Blast tests on three existing two-story, single-bay cross-laminated timber (CLT) structures at Tyndall Air Force Base were successful, according to WoodWorks, a program working with the Wood Products Council.
“On-site observations were decidedly positive; all structures remained intact under significant explosive loading well beyond their design capacity,” according to a council news release. This was the second phase of blast testing on CLT structures conducted by WoodWorks.
“Last year, we tested the structures under their own self-weight,” said Bill Parsons, vice president of operations for WoodWorks. “Those tests were successful and, this year, we built on that effort by testing whether the design methods established as a result of those initial tests needed to be adjusted when the buildings carried typical gravity loads and included different connection configurations, increased panel thickness, and alternate mass timber wall systems.”
One building used 5-ply CLT front wall panels, the second used off-the-shelf prefabricated angle brackets, and the third included nail-laminated timber (NLT) front panels. All three structures remained standing following the fourth and largest blast, intended to take the structures well beyond their design intent. While panel rupture was observed on all front and side wall panels, the buildings maintained enough residual capacity to remain intact and safe to enter, the release says.
Related Stories
Codes and Standards | Oct 5, 2016
New York becomes the first city to adopt a target for energy storage
Mayor de Blasio also announces increased solar generation goals
Codes and Standards | Oct 4, 2016
New global residential floor space measurement standard unveiled
The new standards will produce better transparency and are said to benefit investors.
Codes and Standards | Sep 29, 2016
Dept. of Energy forecasts big jump in LED use, resulting energy savings
Big gains are expected in both commercial and residential markets.
Codes and Standards | Sep 28, 2016
San Francisco commercial, multifamily regulations aim to reduce traffic volume
City planners will require design features to cut miles driven.
Codes and Standards | Sep 28, 2016
Society of Landscape Architects releases guide to resilient design
The goal is to retrofit communities to better withstand extreme weather events.
Codes and Standards | Sep 26, 2016
Washington State Energy Code updates include dedicated outdoor air system requirements
The updates will change design approach to HVAC.
Codes and Standards | Sep 22, 2016
Construction firms pulling back from federal market due to new reporting rules
‘Subjective, very vague’ policies are said to create too much risk.
Codes and Standards | Sep 21, 2016
Airbnb presents legal liability for multifamily owners
How building owners can reduce risks.
Codes and Standards | Sep 21, 2016
Healthy buildings becoming a key design priority for both architects and building owners
Nationwide survey finds nearly three of four architects cite health impacts influencing design decisions
Data Centers | Sep 19, 2016
New ANSI/ASHRAE data center standard is performance-based, more flexible
The aim of the standard was to ‘not stifle innovation.’