Report Strength of Trussed Rafters in The Shop Posted April 30, 2011 As I continue to ponder the layout of my new small shop, and find myself running out of floor and wall space for machines and storage, my eyes constantly wander up to the rafters of the garage. Of course I won't be hoisting any machines up there, but I can't help but wonder how I can utilize that space...there's plenty of it for storing woodstock, seldom-used tools, and other miscellaneous crap, even though it's not the most convenient area to access. Obviously trussed rafters can support a tremendous amount of compressive force, considering they hold a roof, but I'm specifically curious about how much weight the bottom chord can handle, given they are only held together by a splice plate. I found some formulas online for determining strength of trussed rafters based on their construction, but they went right over my head and I don't think any of them addressed weight capacity of the bottom chords in particular. I know they can handle a considerable amount of weight because I've seen people hoist out car engines with them before, but I was just looking for some other real-world experiences from people who have utilized their trussed rafters in their shops. How much weight do you guys have up there? Did you reinforce your splices? Any opinions are appreciated!