Caltrans is studying the durability and performance of its Barrier-Transfer Machines, also known as “zippers.”
Checkout these cool gadgets...
Related Posts
Demolishing building one level at a time
China builds complete 57-story skyscraper in record 19 days!
Casting a $20 Million Mirror for the World’s Largest Telescope
Modular Sprite drone is shaped like a thermos for better portability
Real Engineering – Why Build Higher?
