Longitudinal Stress & Flexibility
Combined longitudinal stress (para. 833.3), biaxial check (833.4), flexibility criterion (833.7), expansion stress range (833.8) and local buckling strain (833.10).
Inputs
Unit system
Piping restraint
psig
in
in
psi
psi
Thermal restraint
°F
°F
Flexibility Criterion (833.7)
For unrestrained piping, D·Y should not exceed K·(L/U)².
in
in
ft
ft
K = 0.03
Local Buckling Strain (833.10)
Critical buckling strain for force-controlled loading.
psi
psi
in
in
psi
°F
Expansion Stress Range (833.8)
Cyclic stress range S_E = M_E/Z, allowable S_A = f[1.25(S_c+S_h) − S_L].
in·lb
in·lb
in·lb
in³
psi
psi