So did you call the engineer?? I've done that more than once - like the time I was suppose to verify some lag bolts going into the wall ... the problem was the wall didn't exist. I mean the rest of the dimensions, the rest of the walls, everything else was there, but this pony wall wasn't there (anymore). Don't know what happened to it, evidently someone demolished it but I had the hardest time convincing the engineer that the wall just flat didn't exist anymore. In the end I won, but it was only because I told him I couldn't sign off on something that I couldn't verify.