Are the spherical tank supports under tensile stress?

1. Wind loads transmitted by the spherical tank. 2. Seismic loads transmitted by the spherical tank. 3. The weight of the spherical tank, the medium inside it, and its accessories can act as eccentric loads on the supports. 4. When the spherical tank is pressurized, it expands, causing the supports to bend; this constitutes a bending moment due to the accessories. In short, it is the transmission of these various loads to the supports that results in bending deformation of those supports, and tension stress occurs on the side of the supports that is under tension. Ignoring tensile stress, the allowable values for tensile and compressive stress are equal, as the compressive stress in the strut is always greater than or equal to the tensile stress. This is just a guess; I hope an expert can provide the correct answer. I’m preparing for the certification exam related to pressure vessels, and I’m quite worried about how to answer the questions – I’ve never worked on heat exchangers or spherical tanks before.

For spherical tank supports, the primary concern is buckling stability; the main issue at hand is stability, and tensile stresses have a much lesser impact on them compared to compressive stresses.