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
| May 1, 2013
AAMA publishes standard for multipoint locking hardware for side-hinged doors
The American Architectural Manufacturers Association (AAMA) recently published the first North America standard for multipoint locking hardware for side-hinged door systems.
| Apr 24, 2013
‘W visa’ program could hamper construction industry's growth
The Senate’s bipartisan immigration reform proposal will provide interim legal status to some 11 million undocumented people.
| Apr 24, 2013
North Carolina bill would ban green rating systems that put state lumber industry at disadvantage
North Carolina lawmakers have introduced state legislation that would restrict the use of national green building rating programs, including LEED, on public projects.
| Apr 24, 2013
BOMA’s 360 Performance Program approaches 600 building designees
The Building Owners and Managers Association (BOMA) International conferred the BOMA 360 Performance Program® designation upon 44 properties in major commercial real estate markets across the U.S. in the first quarter of 2013.
| Apr 24, 2013
New Mexico court strikes down move to repeal energy codes
The New Mexico State Court of Appeals struck down an attempt to repeal energy-efficient building codes.
| Apr 24, 2013
Los Angeles may add cool roofs to its building code
Los Angeles Mayor Antonio Villaraigosa wants cool roofs added to the city’s building code. He is also asking the Department of Water and Power (LADWP) to create incentives that make it financially attractive for homeowners to install cool roofs.
| Apr 17, 2013
Army's FY 2014 $130 billion budget includes $2.3 billion for construction
The U.S. Army submitted a $129.7 billion budget for fiscal year 2014, $2.3 billion of which is allocated for military construction, army family housing, and base realignment and closure.
| Apr 17, 2013
Leonardo Academy to develop sustainability master plan standard
Leonardo Academy launched the development of a standard for sustainability master plans using the American National Standards Institute (ANSI) process to define sustainability goals and achievements for regions, states and campuses.
| Apr 17, 2013
Fenestration Council allows some shading system, dynamic glazing to be rated for U-Factor
The National Fenestration Rating Council (NFRC) approved changes to its NFRC 100 and NFRC 200 standards, allowing certain shading devices to be rated for U-factor and Solar Heat Gain Coefficient.
| Apr 17, 2013
LEED 2009 quarterly interpretations, addenda now available
Quarterly interpretations and addenda to the LEED 2009 rating systems and reference guides are now available.