On site: An inside look at Mortenson-McCarthy’s $1.9B Raiders stadium construction in Las Vegas

When it is complete next summer, the $1.9 billion Allegiant Stadium in Las Vegas will showcase some of the most high-impact, fan-centered amenities ever found in an NFL stadium. The soon-to-be home of Raiders football will sport a sleek black glass exterior, retractable natural turf field, premium lounges and four rolling doors framing a 90-foot-tall, 200-foot-wide view of the Las Vegas Strip. What won’t be so apparent is the design, planning and construction work that went on behind the scenes, a culmination of more than two years of work by two of the country’s largest contractors, two design firms and 70-plus subcontractors.  The numbers sum it up: work on the 65,000-seat, 1.75 million-square-foot venue has involved the removal of 895,000 cubic yards of dirt, 12 miles of concrete drilled shafts, miles of piping and 19 construction cranes. When finished, the structure will encompass 28,000 tons of structural steel and 105,000 cubic yards of concrete, held together in part by 482,000 structural bolts. With so many people, schedules, materials and moving parts on the $2 million-a-day project, the most impressive statistic is that construction is on schedule and on budget ...

Hyundai and Kia cars to get solar roofs from 2019 in international markets

Hyundai and Kia have just announced that they will be offering solar roof panels on their cars. While the markets and cars haven’t been specified, solar roofs, some with a translucent design will be made available from 2019.  Now this isn’t the first time that solar panels have made it to the roof. The Karma Revero sedan already has it and Audi has already announced plans to offer solar roofs. In the Hyundai and Kia cars, the solar roofs will be used to charge vehicle batteries and will initially be fitted to hybrids and even cars with conventional powertrains. In the latter, the generated power can be used to power ancillaries like the air conditioner or seat heaters, thus saving that little bit of extra energy to improve the overall efficiency. There are currently three systems in development. The first is a conventional silicon-based solar roof that will be fitted to hybrids and said to be capable of charging the battery between 30 and 60 percent of capacity within a day, depending on the level of sunlight. This will be followed by a more advanced design with translucent appearance and will be initially used on cars with conventional powertrains. Following solar roofs, Hyund...