Properties of plane area: Sector of solid circle: More than half circle
3
Torsional inertia constant:
4
Torsional section modulus: elastic:(1)
5
Torsional section modulus: plastic:
6
Torsional shape factor: plastic/elastic:
8
Section modulus: elastic:
9
Section modulus: plastic:
10
Shape factor: plastic/elastic:
(1): infinite stress at corner averaged over straight sides