building construction using pentagonal and hexagonal concavo - convex components joined by connectors into which the rod ends of the building components are inset and positioned in a diverging manner . the connectors are apertured to receive fasteners which serve to temporarily attach forms to the building components in a spaced manner . a column supports an uppermost pentagonal form as well as floor joists . the forms define two sets of openings for form securement to either equilateral or isosceles triangular areas of the hexagonal and pentagonal building components .