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 | Mar 2, 2015
Nevada moves to suspend prevailing wage rules on school projects
The Nevada Senate approved a bill that would suspend prevailing wage rules on school projects.
Codes and Standards | Mar 2, 2015
Proposed energy standard for data centers, telecom buildings open for public comment
The intent of ASHRAE Standard 90.4P is to create a performance-based approach that would be more flexible and accommodating of innovative change.
Codes and Standards | Feb 22, 2015
Louisiana officials critical of stricter building standards in flood-prone areas
Buildings would have to be built either two or three feet above the base flood elevation for a 100-year flood or above the base elevation for a 500-year flood.
Codes and Standards | Feb 18, 2015
Buildings with rocking steel-braced frames are advantageous in earthquakes
Research at Case Western Reserve University has found that buildings that rock during an earthquake and return to plumb would withstand seismic shaking better than structural designs commonly used today in vulnerable zones of California and elsewhere.
Codes and Standards | Feb 18, 2015
USGBC concerned about developers using LEED registration in marketing
LEED administrators are concerned about a small group of developers or project owners who tout their projects as “LEED pre-certified” and then fail to follow through with certification.
Codes and Standards | Feb 12, 2015
ASHRAE, USGBC, IES consider biomass requirements in green building standard
The proposal would add biomass to approved renewables.
Codes and Standards | Feb 12, 2015
New Appraisal Institute form aids in analysis of green commercial building features
The Institute’s Commercial Green and Energy Efficient Addendum offers a communication tool that lenders can use as part of the scope of work.
Codes and Standards | Feb 8, 2015
ASHRAE, IAQA approve consolidation
Under the consolidation, IAQA will become a part of the ASHRAE organization while maintaining its own brand and Board of Directors.
Codes and Standards | Feb 6, 2015
Obama executive order requires federal construction projects to consider flood damage caused by climate change
To meet the new standard, builders must build two feet above the currently projected elevation for 100-year floods for most projects.
HVAC | Feb 6, 2015
ASHRAE, REHVA publish guide to chilled beam systems
The guide provides tools and advice for designing, commissioning, and operating chilled-beam systems.