1. The problem statement, all variables and given/known data See attachments 2. Relevant equations 3. The attempt at a solution In the explanation attachment, I don't get the last paragraph "Note that force Fce acts downward on bar....compression." Since from the figure Fce is pointing down, and Fbd is pointing up, shouldn't bar BD be in tension and bar CE in compression? I know intuitively just by looking at the figure, yes, obviously BD is in compression and CE is in tension, but I'm confused by the free body diagram the book draws and its subsequent explanation. I must be missing some concept here. Thanks.