| 摘要 |
<p>There is shown the preforming of walls and floor slabs as a stack wherein the walls of each story are connected to the next floor slab thereabove by lift pick-up cables spaced along the to be top edge of each wall. Lift apparatus forming no part of the building is provided for attaching lift fixtures to elements cast in the edges of the floor slabs. The lift apparatus includes pairs of columns as necessary supporting a repositionable upward bridge therebetween having lifting jacks operating lift rods connected with the floor slabs below by the removable lift fixtures. The whole stack is lifted and starting with the first floor the ceiling slab lifts the walls therebelow which swing out and are guided into position under the slab thereabove and become load bearing walls. Successive like lifts are made to position the respective ceiling slabs and load bearing walls. Suitable vertically aligned apertures are formed in the walls and slabs above for installation of reinforcing rods.</p> |
