Glen, Not being an engineer but using overhead cranes for most of my working career, I would be hesitant to suspend anything such as a momorail from a block wall. The way I've seen and used a crane myself the shock loads are quite large, especially if you have to rotate large items and you don't have them slung close to the center of rotation. I've seen a monorail not supported by block but tied into it, supposidly for bracing, break over 90% of the mortar joints rendering the wall unsafe. Just my two cents worth, I'm sure you'll get better comments from more knowledgable people..Mike

im a site engineer with a structural steel company. i agree with the other post that having the beam anchored into concrete is very risky all crane rails i have seen are fixed to a steel frame by large welded connections.it would take a fairly large beam to suspend 5000kg and would need to be properly designed by a struct.eng. who would need to look at the concrete wall also