"grodenhiATgmailDOTcom" wrote in message

1.) Construction Adheasive (Liquid Nails.. etc). This plank sits under
the lip of the thresold and does not get stepped on. Would this work
for adhearing wood to cement? Would it be a strong bond?

2.) Srewing the board to the slab using masonry screws. Now comes the
dumb question...

I vote for adhesive. The urethane stuff is incredibly strong. Easier than
using any sort of screw or anchor. Worst case scenario is that if it fails,
you can still put the screws in later.