Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin’s formula as___________________?
A. d = 1.1 t
B. d = 1.6 √t
C. d = 1.5 t
D. d = 3 √t
Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin’s formula as___________________?