The idea of smaller, autonomous robots working collectively to build large structures is gaining traction in robotics research, according to Science Robotics study. These systems can help companies reap productivity and labor benefits throughout a building's life cycle.
A young professionals group within a Colorado chapter of the Associated General Contractors of America, plus AGC Charities and a local organization collaborated on a volunteer effort to revamp the playground at Evans Elementary School with features such as a race track for tricycles. More information about the AGC Charities-supported project is available at AGCcharities.org.
A "failure of quality control" in the construction of the Salesforce Transit Center in San Francisco led to two cracked beams that forced the center's shutdown, Transbay Joint Powers Authority Executive Director Mark Zabaneh says. As a result, tens of thousands of construction documents are being reviewed, but no additional problems have been detected.
After previously rejecting the $2.3 billion Grain Belt Express Clean Line, which would help deliver Midwestern wind energy to the East Coast, the Missouri Public Service Commission is allowing the project to move forward. However, the transmission line still needs regulatory approval from Illinois, and Invenergy's purchase of the project still needs approval in Kansas and Missouri.
Hong Kong plans to confront its affordable housing shortage with a 2,471-acre, $80 billion artificial island. The goal is to create 260,000 residential units, 70% of which will be public housing.
Typical wastewater treatment entails using energy to transform wastewater ammonia into nitrogen, which in turn is converted back into ammonia for products such as fertilizer. Colorado School of Mines Ph.D. candidate Yalin Li argues it would be far more efficient to directly extract the ammonia through urine separation.
Eighth-grade girls from schools in West Virginia participated in Introduce a Girl to Engineering Day. Civil engineer Melissa Thompson says events like these allow girls to meet female engineers and learn about STEM careers.
A Chinese ship maneuvered close to a US destroyer near the Spratly Islands last September, but the US won't let such actions keep it from asserting freedom of navigation in the South China Sea, say Vice Adm. Phillip Sawyer, commander of the 7th Fleet, and Capt. Eric Anduze, commander of the USS Blue Ridge, which recently anchored at Manila Bay after sailing through the disputed waters.
The US Navy and the Royal Fleet Auxiliary Mounts Bay plan to conduct a two-week experiment out of Norfolk, Va., that will put new mine warfare methods to the test in preparation for potential future missions. "We will have the opportunity to advance and refine our performance as ... [a mine countermeasures] task group since MCM is not built around a single platform or sensor; we combine the right sailors and tools to accomplish the mission," Cmdr. Jon Haase said.
During the years it faced the Cold War threat of hundreds of Soviet submarines hunting for US aircraft carriers, the US Navy assigned anti-submarine measures a high priority. One of the principal systems is the surface-launched anti-sub torpedo, which is pneumatically ejected from deck-based tubes to carry a light but lethal warhead to its target.