Atria with natural light are part of two plans to build a more welcoming Penn Station in New York City. The plans, unveiled by Gov. Andrew Cuomo and transit agencies, differ in that one retains two levels for boarding, while the other has an open, single-level concourse.
Republicans are formulating an alternative to President Joe Biden's infrastructure plan that might total $600 billion to $800 billion for a narrowly defined set of projects. Senate Democrats see the GOP proposal as unacceptable, but Biden's $2 trillion-plus plan could face a precarious path to passage.
North Dakota Gov. Doug Burgum has signed a $680 million water infrastructure bonding bill to take advantage of low interest rates. The legislation includes $435.5 million for the $2.75 billion flood diversion project in the area of Fargo, N.D., and Moorhead, Minn.
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Building information modeling has yet to make the headway in transportation infrastructure design that it has achieved in other fields of construction. Yet 3D modeling is clearly the way forward, writes Stantec's John Barone, noting four distinct advantages in terms of cost predictability, error reduction, stakeholder engagement and safety.
SmartTake: While 3D modeling has benefits for a wide range of infrastructure projects, the foray into 4D and 5D through the integration of schedule and cost, respectively, could strengthen the business case for BIM in transportation.
The global coronavirus pandemic was a key factor in driving adoption for internet of things technology in 65% of cities worldwide, ESI ThoughtLab found in a recent study. ESI's survey also revealed that artificial intelligence and the use of biometric data were among the main technologies cities have implemented or plan to adopt.
Startup 120Water has expanded its software capabilities to help utilities identify lead service lines and report testing data. "We can estimate that based on age and some of their informal studies, there may be upward of 10 million [lines], but no one really knows until we start creating these inventories," said co-founder and CEO Megan Glover.
Retrofit solutions for the the Port of San Francisco's aging seawall will be informed by a newly completed study by Fugro that examines geotechnical factors and vulnerability, sea-level rise and earthquake-related threats. Fugro's study included a 3D ground model and dynamic soil structure analysis to more precisely assess the walls needs and avoid unnecessary retrofit costs.
Brunel University London researchers are looking to create and demonstrate a waste-based cement mix than can be 3D printed into modular components for buildings. "Our objective is to decrease the CO2 footprint of printed products against traditional virgin concrete and cementitious mortars, through the development of printable mixtures that will use up to 100% recycled aggregates," said project lead Seyed Ghaffar.
A new study compares the qualities of various forms of concrete created from geopolymerization of solid industrial waste and byproducts with conventional cement-based concrete. Researchers conclude geopolymer concrete with 750 kilograms per cubic meter of fly ash as the best choice balancing engineering and environmental considerations.