Rough-in inspection completed for system # 4 clean link and photo bay. Noted items include missing retainers at several beam clamps on branchlines, 4" and 6" mains, missing hanger at arm-over, pendent heads are blocked or obstructed at numerous locations due to proximity to AMH brackets, flex head whips are not yet installed at various areas in the clean link, missing seismic bracing at the 6" main, secure EQ brace at the 4" main, added 90s at branchlines in the photo bay are not included in the calcs.- branch line restraint at these locations shall be provided per NFPA 13 9.3.6.4.