Reference standard: Spherical Tanks and Large Storage Tanks - Complete Book of Chemical Equipment Design (2005) P160 (152)
According to formula P o =q one +q two +q three Calculate
Where, q one Is the dead weight per unit area of the tank top (if there is an insulation layer, it should be included in the weight of the insulation layer, according to the projected area), kPa; q two It refers to the design negative pressure in the tank, generally 0.49kPa or 1.2 times the opening pressure of the suction valve of the breathing valve, kPa; q three Is the additional load, (snow load or live load), generally 0.70kPa, kPa; P o Is the design external pressure, kPa;
