Doing structural analysis & design for Superstructure and Foundation separately and independently is the traditional (but inadequate) practice for building design. The resulting building structure is “unreliable” in many aspects. For example, the actual natural frequency may be several times higher than the assumed one. Effects due to temperature difference may also be several times severe than expected. In order to tackle these problems, we have developeda ground breaking Software which is able to combine Superstructure with Foundation for both static and dynamic structural analysis. If only in static analysis, TowerPeak-3 also takes into account the contact between the raft foundation and pile foundation and foundation platform and disengagement between the problem, between raft foundation and foundation were simulated friction, these are used repeated approximation calculation method. To carry out dynamic structural analysis for earthquake design, Foundation system can be incorporated in the whole building structure as one single system. The discussion on lumped mass at relevant nodal points for the superstructure can be referred to Part I. For the foundation elements, the relevant nodal points for lumped mass are at the intersection points between (footing/column, wall, tie beam or pile). The mass at other nodal points will then be lumped to these relevant node points. Please refer to the relevant section of the Part I for more details. When considering construction phasing design, the foundation itself plus the level 1 of the Superstructure should be taken as the stage “1”. Please refer to the relevant section of the Part I for more details. The operation is firstly, establishing models for Superstructure (data file with extension SSD & MSD) and Foundation (data file with extension IFD & GFD) respectively. Subsequently, use file “SFD” to create a combined model. An integrated analysis can then be carried out on the combined model. Lastly, “TowerPeak-3” (Superstructure with Foundation combined) has successfully obtained approval and certification from Hong Kong Buildings Department, Hong Kong SAR Government. The registration number are S0715 (Analysis Module) &S0731 (Design Module) respectively.