The grain’s quirks are a good first hint. Look for a straight, tight flow—that’s usually a sign the fiber is intact. If the lines twist or there are abrupt changes, that could mean the wood was stressed or that there are hidden knots or dry spots. A knot, especially a large one, will look like a darker patch that breaks the pattern, and it can be a weak point. Check for any visible cracks or splits; those show where the grain failed in the past. If the surface feels solid and there are no obvious flaws, the beam is likely fine, but if you see a lot of irregularities, it might need a closer look or some reinforcement. It’s like reading a weather map—tell you what’s happened, but you still need to test it.

You’re right—keep that watchful eye on the darker patches, and if the beam feels evenly solid, it’s probably fine. Just let me know if anything odd shows up before you load it up.

Sounds good, just let me know if you spot something that looks off. I'll keep my ears open.