Engineers found many design flaws in a collapsed Chinese school. Such risks extend far beyond China. https://revkin.substack.com/p/gauging-losses-and-lessons-in-turkeys

1. DESIGN FOR DISASTER Photos show what engineers say were big flaws in construction of Xinjian Primary School. Photo: (Du Bin for The New York Times)

3. Columns buckled, probably due to inadequate re-bar reinforcement and transverse binding (small wires).

5. Experts said the concrete appeared to have too much “aggregate” (gravel mixed with cement), of wrong size.

7. Tens of thousands of schools worldwide, from Portland, Ore., to Tehran, face the same risk and are not reinforced. For more on earthquakes and schools, explore earthquake posts and links at The New York Times Dot Earth blog: dotearth.blogs.nytimes.com Also….