DIYbanter - View Single Post - How much weight could my garage roof joists carry?

wrote:
I have a detached double garage, which was built about 6 years ago by
McAlpine.

I want to rig up a 'chain block' to do some lifting.. I am only
planning to lift a max of 200kgs and wonder if my joists will take
this kind of load.

The plan I had was to put a bar along a number of joists (Probably 4),
to spread the load a little.

Would this be safe?

Depends. How big are the roof timbers and how are they supported?

If it's anything like my garage the roof timbers are /just/ big enough to
take the weight of the roof and they run the length of the garage rather
than the shorter way across the width. When I needed to lift in my garage I
fitted extra timbers across the width and supported the ends with vertical
timbers resting on the concrete floor.

Dave