the invention herein is drawn to a plurality of structural products comprising segregated slabs , a process of making such structural products , and apparatus for performing such process of making such products and structures incorporating such products . the product comprises a plurality of slabs connected to each other only by an array of steel bar members extending therebetween and firmly attached thereto , whereby the slabs are movable relative to each other in directions transverse to the length of said bar members to the limit of flexibility of said steel bar members , so that many undesirable yet usually developed stresses and strains and failures developed in conventional reinforced concrete structures are obviated , and a light , strong , low - cost , thermal insulating structure is provided . the process of manufacture of the segregated slab product provides for rapid reliable low - cost manufacture of the structures shown and utilizes the spaces provided in the structures made for location and operation of mold forming apparatuses . the static structures incorporating the segregated slab products minimize the effect of thermal stress and strains on the separate concrete - containing components thereof .