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
Windows and Doors | Mar 5, 2023
2022 North American Fenestration Standard released
The 2022 edition of AAMA/WDMA/CSA 101/I.S.2/A440, “North American Fenestration Standard/Specification for windows, doors, and skylights” (NAFS) has been published. The updated 2022 standard replaces the 2017 edition, part of a continued evolution of the standard to improve harmonization across North America, according to a news release.
AEC Innovators | Mar 3, 2023
Meet BD+C's 2023 AEC Innovators
More than ever, AEC firms and their suppliers are wedding innovation with corporate responsibility. How they are addressing climate change usually gets the headlines. But as the following articles in our AEC Innovators package chronicle, companies are attempting to make an impact as well on the integrity of their supply chains, the reduction of construction waste, and answering calls for more affordable housing and homeless shelters. As often as not, these companies are partnering with municipalities and nonprofit interest groups to help guide their production.
Modular Building | Mar 3, 2023
Pallet Shelter is fighting homelessness, one person and modular pod at a time
Everett, Wash.-based Pallet Inc. helped the City of Burlington, Vt., turn a municipal parking lot into an emergency shelter community, complete with 30 modular “sleeping cabins” for the homeless.
Codes | Mar 2, 2023
Biden Administration’s proposed building materials rules increase domestic requirements
The Biden Administration’s proposal on building materials rules used on federal construction and federally funded state and local buildings would significantly boost the made-in-America mandate. In the past, products could qualify as domestically made if at least 55% of the value of their components were from the U.S.
Industry Research | Mar 2, 2023
Watch: Findings from Gensler's latest workplace survey of 2,000 office workers
Gensler's Janet Pogue McLaurin discusses the findings in the firm's 2022 Workplace Survey, based on responses from more than 2,000 workers in 10 industry sectors.
AEC Innovators | Mar 2, 2023
Turner Construction extends its ESG commitment to thwarting forced labor in its supply chain
Turner Construction joins a growing AEC industry movement, inspired by the Design for Freedom initiative, to eliminate forced labor and child labor from the production and distribution of building products.
Multifamily Housing | Mar 1, 2023
Multifamily construction startup Cassette takes a different approach to modular building
Prefabricated modular design and construction have made notable inroads into such sectors as industrial, residential, hospitality and, more recently, office and healthcare. But Dafna Kaplan thinks that what’s held back the modular building industry from even greater market penetration has been suppliers’ insistence that they do everything: design, manufacture, logistics, land prep, assembly, even onsite construction. Kaplan is CEO and Founder of Cassette, a Los Angeles-based modular building startup.
Airports | Feb 28, 2023
Data visualization: $1 billion earmarked for 2023 airport construction projects
Ninety-nine airports across 47 states and two territories are set to share nearly $1 billion in funding in 2023 from the Federal Aviation Administration. The funding is aimed at help airports of all sizes meet growing air travel demand, with upgrades like larger security checkpoints and more reliable and faster baggage systems.
Seismic Design | Feb 27, 2023
Turkey earthquakes provide lessons for California
Two recent deadly earthquakes in Turkey and Syria offer lessons regarding construction practices and codes for California. Lax building standards were blamed for much of the devastation, including well over 35,000 dead and countless building collapses.
Sports and Recreational Facilities | Feb 27, 2023
New 20,000-seat soccer stadium will anchor neighborhood development in Indianapolis
A new 20,000-seat soccer stadium for United Soccer League’s Indy Eleven will be the centerpiece of a major neighborhood development in Indianapolis. The development will transform the southwest quadrant of downtown Indianapolis by adding more than 600 apartments, 205,000 sf of office space, 197,000 sf for retail space and restaurants, parking garages, a hotel, and public plazas with green space.
