Hello all, I have a customer asking me about using poplar for a timber frame. I have been around most other commonly available woods for timber frame, such as oak, pine, and doug fir, but never been around poplar. I know it tends to have a lot of internal stress which can cause cracking, but how much does that actually effect it structurally? It would be some larger beams, such as 8x16 or 10x16. Any input would be appreciated.