Anchoring a winch to a concrete slab is not something we can provide instructions for.
Concrete has many different characteristics and finishing forms that would need to be considered,
- What is the PSI of the concrete use in the slab
- Does the slab have reinforce Re-Bar or square wire mesh reinforcement
- How thick is the slab
- How old is the concrete
- Does the mounting of the winch to the slab utilize a sheer or vertical load on the mounting bolts
- Etc..
There are just to many factors that we cannot supply instructions and that would make us liable if the consumer failed to do something correctly.