A steel hall is usually photographed before the cladding goes on. Open purlins, open bracing and an empty facade do not mean the work stopped halfway. At NFS Çelik & Yapı we do not start facade or roof cladding until the frame bolts are tight and the temporary stability is closed. Cladding hides the frame. If what it hides has not been checked, the error stays behind the sheet.
The frame close-out is written down
Close-out is three lines: the main frame bolts, the vertical brace or the member that replaces it, and the line the purlins sit on. Sandwich panel, trapezoidal sheet or facade cladding is not written into a shipping lot until those three are marked. If the order leaves early, the sheet arrives and waits on the scaffold. Sheet that waits is stock, not erection. An unfixed panel in the wind is a greater risk than an open frame.
Cladding is the last lot of erection
On the erection plan, cladding is the last lot. The crane closes columns, beams and purlins first. The cladding crew enters once the frame handover is written. Bolt tightening and panel fixing are not written on the same grid for the same day. On a tight plot the scaffold and the crane take each other's ground. Sequence comes before the wish to finish faster.
The hall looks complete in the photograph once the cladding is on. Completeness is the frame having closed before the sheet.
