TABLE OF CONTENTS This design check deals with the global movement of structures, i.e. with the failure modes overturning, uplifting, and global displacement. In practically all cases uplifting is already considered to be an ultimate failure mode, making the check against overturning superfluous.
This design check is so closely linked to the GPD-DC that in many codes, especially civil engineering ones, both design checks are combined in one more general design check for a comparison of design effects of actions with resistances of the structures, resistances against GPD, overturning, uplifting, and global displacement.
In the Direct Route in DBA this design check is kept separately, because in the overwhelming majority of cases in pressure vessel design this design check is very different from the other design checks discussed above, inasmuch as the structure can be considered as a rigid body and the whole design check reduced to the usual traditional check of supports [117 119].
Only in cases in which reactions at supports forces, contact pressures, and moments cannot be determined by means of global equilibrium conditions together with simple conservative assumptions are non-rigid models required. And even then usually part models suffice for the determination of these reactions, which then can be used in the design check of the whole structure considered as a rigid body. In the majority of these cases the required information can be directly obtained from results of the GPD-DC, often the required reactions themselves.
Therefore, the discussion in this chapter is concise. The usual...
