Cracked section — where it appears
Also named here as modular ratio — the same set of essays touches all of them, so they are one junction rather than several.
When half the section has given up
Bending theory puts the neutral axis through the centroid. That is a consequence, not a rule — and when the tension side cracks, the same reasoning moves the axis somewhere else entirely.
The deflection that arrives three years late
A concrete beam that passes every check on the day it is built goes on deflecting for a decade, and ends up three times where it started. Nothing about the load changed, and nothing about the strength was ever in question.
Named alongside it
The objects these essays reach for when they reach for this one.
Modular ratioCreepDeflectionEffective modulusElastic modulusFirst moment of areaLever armNeutral axisSecond moment of areaServiceabilityShrinkageStress block