We had an L-shaped patio that had fallen 2″ along the house breaking the electrical conduit. The sunken slab was draining rain water toward the house.
The tricky part was avoiding lifting against the basement wall while making sure we lifted the slab up enough to correct the drainage problems.
We took our time and everything worked beautifully. The pipes all rejoined perfectly, and the slab came up evenly.
After sealing along the house and patching our drill holes, we had the patio back where it belonged and ready for the graduation party that was scheduled for the following week.