Fuente: WIPO "rice" A building construction utilizing precast concrete building units which are positioned side-by-side and end-to-end as well as stacked to form a multistory structure; the units being secured together by tendons freely threaded through horizontal and vertical chases provided in the building units, placed under tension and anchored at their extremities. The building units may also include precast beams containing longitudinal catenary tendons anchored at the end extremities of each building unit, the units being bolted in end-to-end relation.