Thanks for this input, Roger. I also see predominant center bay lay out, where the braces are aligned to the center bay and end bents are to the outside, four bent structures. I presume these building are lofted off the floor. I never see snapped lines on these building but that doesn't mean they did't use them. Did they use ink? Chalk which would dissolve over a short period of time, let alone to be found under all the grim, was used. I have seen only one obvious snapped line and that was on a set of drop in 2x8 joist dictating the depth of the pockets, it was in a house.