I will also speculate that they will have had to specify whether the spacing is based upon 1" centers or 1" between cable ties,This info should be CLEARLY noted on the engineering drawings or technical manuals or work instructions made from the engineering drawings ...
At some point, engineering would have determined loading, expected flexure and spelled out the required hardware needed to meet those parameters ... that part is not the FAA's job.
Thank you for your input. I spent 8 years in engineering and know how that works and understand the separation between enginerring and FAA.