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
| Aug 2, 2012
Court ruling may lead to more destructive testing on unfinished Harmon Tower in Las Vegas
A Clark County, Nevada district court judge ruled that the unfinished Harmon Hotel at CityCenter, operated and half-owned by MGM Resorts, could not use extrapolation when requesting damages at a possible trial.
| Aug 2, 2012
NIBS council recommends private and public measures to improve building sustainability
A new report by the National Institute of Building Sciences Consultative Council highlights four several areas that need focus to improve sustainability in buildings and infrastructure.
| Aug 2, 2012
Greenbuild summit will focus on greening affordable housing
A two-day summit focused on green building in the affordable housing market will be held Nov. 13 - 14, 2012 in San Francisco, Calif. at the Greenbuild International Conference & Expo.
| Aug 2, 2012
More than 250 downtown El Paso, Texas buildings don’t meet safety codes, says city’s fire department
A total of 726 buildings were inspected for unsafe conditions, and 266 did not meet safety codes, while 112 buildings were found to be vacant and needed further inspection.
| Jul 26, 2012
Wisconsin may establish stormwater storage requirement for green roofs
Green roofs and other green infrastructure would be required to capture stormwater under a draft state wastewater discharge permit from the Milwaukee Metropolitan Sewerage District.
| Jul 26, 2012
SouthPark Mall in Charlotte reopens after heavy rains collapse part of its roof
Code enforcement officials in Charlotte, NC gave the okay for the SouthPark Mall to reopen after two parts of its roof collapsed following heavy rains last week.
| Jul 26, 2012
New NRCA photovoltaic roof systems guidelines released
The National Roofing Contractors Association’s update of its Guidelines for Roof Systems With Rooftop Photovoltaic Components is now available.
| Jul 26, 2012
DOE/ASHRAE design guide aims to cut energy use at hospitals, schools, retail stores
The Advanced Energy Design Guidelines from the Department of Energy and the American Society of Heating, Refrigerating and Air Conditioning Engineers aims to provide ways for hospitals, schools, and large retail buildings to trim their energy consumption by 50%.
| Jul 19, 2012
Bayview Property Managers agrees to record $800,000 building code fine
A San Francisco property-management company has agreed to pay a record $800,000 civil fine for hundreds of building code violations at rental properties.
| Jul 19, 2012
Glass ‘biodome’ helps Parkview Green FangCaoDi project in Beijing achieve LEED Platinum
A glass envelope acting as a kind of biodome encapsulates four mixed-use towers at Parkview Green FangCaoDi, an 800,000 sf mixed-use development in Beijing. The glass structure helped the development to achieve LEED Platinum certification.