[Born to Conserve]

I’ve seen concrete subs who shouldn’t be allowed to play with legos. Usually this sort of collapse is the result of absence of reinforcing in the “reinforced concrete”. Without a complete network of steel, concrete is about as strong as chalk.

[Strategerist]

I’ve seen concrete subs who shouldn’t be allowed to play with legos. Usually this sort of collapse is the result of absence of reinforcing in the “reinforced concrete”. Without a complete network of steel, concrete is about as strong as chalk

All of this stuff is going to be loads of fun in earthquakes - we've already seen the effect in the Sichuan quake.

[shotgun]

It apprears that it collapse under it’s own weight. Surely they would have taken that into consideration in the design process. Also from the pictures I am not seing a lot, if any, rebar twisted and torn out of the concrete roadway unless they built these sections independant of adjoing sections. Typically see continuous rebar mat in the road section.

[expat1000]

Usually this sort of collapse is the result of absence of reinforcing in the “reinforced concrete”. Without a complete network of steel, concrete is about as strong as chalk.

Substandard (smaller diameter than both specs and invoices show) rebar is a problem throughout Asia.