How deep should I drill and what diameter should I use? The conditions are as follows. I need to attach a pool ladder. The pool is built in leca with 50mm concrete slabs all the way to the pool edge. Viewed from above, it's a 50mm concrete slab, mortar joint, and 190mm leca block. I have 1m of stainless threaded rod M8 that I plan to use for four attachment points (thus 25cm each). I also have four "chemical anchors" in the form of glass capsules with various compounds in them. Unfortunately, I no longer have the packaging, so I don't have instructions on how to use them. The capsules are marked fischer RM 8, so I assume it involves Kartro. Should I drill exactly as deep as the threaded rod will go, or should there be a little extra depth? Should I use the same hole diameter as the rod and capsules, or should there be extra width there? Tips on this or a link to some instructions would be appreciated.
