The practice of using concrete rubble and rebar to protect riverbanks from erosion poses a safety hazard for rafters, a former government biologist says. Calgary firefighters pull 80 pieces of rebar ...

Concrete makes up a huge part of the built world, but steel rebar–reinforced concrete is difficult and dangerous for humans to make. Toggle thinks robots can make it faster and safer. (Courtesy Toggle ...

If structural engineers have their way, building codes will take a leap forward in the next couple of years to allow the use of higher-strength 80-ksi reinforcing steel in concrete shear walls in high ...