A new approach to lift slab construction is being employed in a nine-story senior citizens home. The technique, called the Multi-Leveling Component System (MLCS), involves casting all of the floor slabs at ground level one atop the other, then raising them as a group, dropping off one slab at each floor level. When completed the East Chicago, Indiana senior citizens home project will be a T-shaped building consisting of three wings. Each wing is being erected separately. After the ground floor is placed, the nine slabs needed for the nine floors and the roof of each wing are cast one on top of another. A liquid bond breaking compound is sprayed on each floor before the next is cast. The slabs are seven inches thick and measure approximately 120 feet long by 50 feet wide: their combined weight totals just under 4,000 tons for each wing. Th ground floor serves as a base for the first floor and each floor thereafter becomes the base for the next one. The nine slabs are bolted together with short bolts and couplings. Twenty-six steel lifting shores, each having two hydraulic jacks siting on a frame on either side of the support, are put in place after concrete placement is complete. Steel rods connect the slabs to the jacks at each support. The nine slabs are jacked to a height of one story plus five inches. The lowest slab is then separated from the others and seated on temporary holding brackets, while load-bearing precast concrete supports called wall columns are moved into position. Gaskets are placed on the top and bottom of the precast supports before the floor slab is lowered hydraulically five inches to rest in its permanent location.