In this research investigation, the authors propose the notion of construction of a new Set of Pre-fabricated Basis Elements for use as Structural Steel Elements using RCB Model of Multivariate Optimization. Generally, we have Angles, Channels, T-Beams, I Beams, Flats and Rolls as Structural Steel Elements. However, there can be situations in Structural Steel design wherein the Tension, Compression, Torsion and Shear Stress combinations call for other Optimal Structural Element or/ and Connection Bases. To this end, the authors propose to combine the six afore-mentioned Basis Elements in the combinations considered 2 at a time, 3 at a time, 4 at a time, 5 at a time and finally all at a time, and also each considered along each of the x, y, and z dimensions, in xy, yz, and zx planes and also in the xyz space at optimal orientations called for by the Structural Steel Design specifications of concern. This gives us special kind of new Basis Elements that satisfy Structural Steel design cases that need Minimum Clutter and non overbearing expense of time, quantity of material and labour costs. Such a designer design is achieved case-wise by Parametric Unitaritizing all Stress type values of concern together for the specific designer design criteria of concern such that we know the scale magnification relations between each Stress Parameter w. r. t each other, allowing us to design the dimensions of such individual Basis Components in the making of the Composite Collective Basis Element of concern.