New product announcements: 11/18/2009 Road Barrier System: Able To Take an Impact The NU-TEN Terminal End is designed to anchor a high-tensioned cable-barrier system. The trigger post can accommodate a three-, four- or five-cable barrier, allowing for different configurations depending on necessary barrier conditions. During a vehicle impact, the cables disconnect from the top of the trigger post and the cable barrier is immediately detensioned, reducing the chance of the vehicle vaulting, rolling or snagging. The system’s ground strut and the three rebar-cage assemblies are secured in the ground by concrete pilings cast into 18-in.-dia. holes at least 100 in.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.