Arches have been used throughout the centuries, but they have always required large amounts of form work (or a master mason). Now, at least when it comes to tunneling, arches require one of the largest machines in the world. The Zipper truck system, known as Arch Lock, is basically a mobile arch form work that, when used with precast concrete wedges, creates an instantly strong system.
Read moreHere Are Some Up Close Views of How That Chinese Mega Bridge Erection Machine Works
Last week, we posted a couple videos of a 580 ton bridge girder erection machine with extendable arms that allow a girder to be dropped into place from above. The view of those videos were a little far away, so it was hard to get good details on how it worked and what exactly was going on, but now a third video has been uploaded to Youtube by Funny & Amazing Planet that could help fill in some of the blanks.
Read moreMassive 580 Ton Chinese Girder Erection Machine Drops Girders Into Place From Above
A bridge needs to be built, so time to bust out the cranes, right? Not so fast, a Chinese company has built a machine that has a creative way of setting girders into place.
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