Montreal-based MAADI Group recently designed a 151-foot-long, 6½-foot-wide pedestrian work bridge to connect platforms in the West Philippine Sea. Using high-strength aluminum for the bridge’s material, MAADI designed the bridge with lateral movement capability that could withstand deep-ocean movement and wind gusts up to 200 km/hr (124 mph).
MAADI’s President/CEO, Alexandre de la Chevrotière, says that water and wind movements can cause the platforms to shift by as much as one inch, so the bridge was engineered to account for movement up to one meter. A trolley system at one end of the bridge allows slight back-and-forth movements of the bridge between the platforms.
The span was built in four sections. Its abutments are unique, according to de la Chevrotière, in that their pin connections rotate on two axes. There’s also a pin connection at the top of the trolley, which allows the bridge to move in several different directions by as much as three degrees to account for ocean movements, he says.
The 13-ton bridge was built to accommodate up to 80 workers on deck. (The accompanying image shows 8.4 tons of water being used to test the span’s load capacity.) The bridge’s camber was designed to reduce the deflection caused by dead and live loads.
“Aluminum is the material of the future,” says de la Chevrotière. “It doesn’t rust and it’s maintenance free.”
Read about more innovations from BD+C's 2014 Great Solutions Report.
Related Stories
| Jul 1, 2013
LEGOLAND builds 12-foot replica of One World Trade Center
The LEGOLAND Discovery Center Westchester in Yonkers, N.Y., celebrated the completion of a LEGO replica of One World Trade Center by lighting the 12-foot-tall, 100-pound model.
| Jul 1, 2013
Report: Global construction market to reach $15 trillion by 2025
A new report released today forecasts the volume of construction output will grow by more than 70% to $15 trillion worldwide by 2025.
| Jul 1, 2013
Elizabeth Chu Richter, FAIA, elected 2015 AIA President
Delegates to the American Institute of Architects (AIA) national convention in Denver elected Elizabeth Chu Richter (AIA Corpus Christi) to serve as the 2014 AIA first vice president/president-elect and 2015 AIA president.
| Jun 28, 2013
Calculating the ROI of building enclosure commissioning
A researcher at Lawrence Berkeley National Laboratory calls building enclosure commissioning “the single-most cost-effective strategy for reducing energy, costs, and greenhouse gas emissions in buildings today.”
| Jun 28, 2013
A brief history of windows in America
Historic window experts from Hoffmann Architects look back at the origin of windows in the U.S.
| Jun 28, 2013
Building owners cite BIM/VDC as 'most exciting trend' in facilities management, says Mortenson report
A recent survey of more than 60 building owners and facility management professionals by Mortenson Construction shows that BIM/VDC is top of mind among owner professionals.
| Jun 27, 2013
Thermal, solar control designs can impact cooling loads by 200%, heating loads by 30%
Underestimating thermal bridging can greatly undermine a building’s performance contributing to heating load variances of up to 30% and cooling load variances of up to 200%, says the MMM Group.
| Jun 26, 2013
New York’s ‘Scaffold Law’ may be altered to place larger burden on workers
New York's Scaffold Law, which “places the burden of responsibility on the contractor to prove that the job site was safe for workers,” could be facing a major change.
| Jun 26, 2013
Commercial real estate execs eye multifamily, retail sectors for growth, says KPMG report
The multifamily, retail, and hospitality sectors are expected to lead commercial building growth, according to the 2013 KPMG Commercial Real Estate Outlook Survey.
| Jun 25, 2013
Mirvish, Gehry revise plans for triad of Toronto towers
A trio of mixed-use towers planned for an urban redevelopment project in Toronto has been redesigned by planners David Mirvish and Frank Gehry. The plan was announced last October but has recently been substantially revised.
