Shear stress

Input

F value

f

Short-term allowable stress

\tau_s

Long-term allowable stress

\tau_l

Notes

Based on Eq. (5.2), $f_s = F/(1.5\sqrt{3})$ , in 5.1(2) of the AIJ Standard for Allowable Stress Design of Steel Structures (2019).
The short-term value is 50 % above the long-term one (5.6 of the same Standard).
Where the Standard writes "stress intensity", this page writes simply "stress".

Reference strengths F, by material.