Sorry the forums were down yesterday but I did have a chance to try your suggestion and sadly I must report it was even less effective than how I had the script originally set up. Columns don’t appear to have a cross-section rotation parameter and to redo the script with vertical beams… while I rather try some other approuches before return to this option. Interestingly. in total I’ve found 3 ways of rotating families but still the process to align columns to the curve eludes me. I’ll keep trying.