Cranked out a ceiling grid layout and missed a beam by 3/8 of an inch
I was in the middle of laying out a suspended ceiling for a small office remodel downtown, thinking I had it all mapped out perfect on my CAD file. Got on site with my laser and started snapping chalk lines, feeling pretty confident. About halfway through the grid, I went to hang a corner tee and realized the cross tee was butting right into a steel beam that I swore I had noted as a offset. I must have been looking at an old structural drawing or just skimmed over it too fast in my software. Ended up having to shift the whole layout 3/8 of an inch south, which meant re snapping every single line and cutting every tile down by that same amount. Took me an extra hour and a half on my feet, and I had to eat the cost of two extra sheets of tile because the cuts just didn't look clean. Has anyone else had a layout go sideways because of a hidden beam or duct that you missed in the plans?