This section is from the book "Safe Building", by Louis De Coppet Berg. Also available from Amazon: Code Check: An Illustrated Guide to Building a Safe House.
(German, Widerstandsmoment; French, Moment de resistance).
The moment of resistance of any fibre of a body, revolving around an axis, is equal to the moment of inertia of the whole body, divided by the distance of said fibre from the (neutral) axis, around which the body is revolving.
A table of moments of resistance will be given later on.