Tag
#bridges
4 topics across all disciplines.
Bridge types and how each one carries load
Girder, truss, arch, cable-stayed and suspension bridges explained by the path the load takes to the ground — and why that path decides which members are fracture-critical, where an inspector must look first, and what a single failure would do.
Prestressed and post-tensioned concrete
Why concrete is squeezed before it is loaded, the difference between pre-tensioning in a casting yard and post-tensioning on site, how losses eat a third of the force you paid for, and why a grout void inside a duct is the most dangerous defect in modern bridge engineering.
Bearings and expansion joints
Every long structure moves, and bearings and joints are what let it. The types you will meet, how to read a movement calculation, why a seized bearing damages the pier rather than the deck, and why joints leak onto the most expensive parts of a bridge.
Segmental and precast construction
How a metro viaduct, a flyover or a warehouse frame gets built out of factory-made pieces — match-casting, launching girders, balanced cantilever, shear keys and grouted joints — and why the joints and the temporary condition are where the risk lives.