GB wrote:
My garage used to be an air raid shelter, built during the last war out of
reinforced concrete.

I now want to put up shelving screwed to the walls. I have a reasonably
powerful 'ordinary' hammer drill, mains powered. Black and Decker, but
fairly sturdy. This is fine for brickwork, but I'm not so sure about
concrete. Is this going to be man enough for the job, or should I buy/hire
something more powerful?

Give it a go, and see what happens. "Drillability" depends on what the
concrete is made of, as well as the drill!


Also, do I need a special drill bit or will an ordinary masonry drill bit do
the job?

A masonry bit will do the job - make sure it's not a blunt one!