Title: +038=221.001-#####T_01-Ruukki - Sandwichelement - Produktinfo.pdf
EN Ruukki Forma design instructions 11Support studsThe lamellas are fastened to support studs by self-drilling screws. When the Design profiles are over 900 mm wide, additional center support studs are required. Moreover, if the support studs are fixed parallel to panel length, the maximum c/c for studs is 600 mm and the stud ends have to reach the panel end. Levelness of the substructure for the entire width of a Design profile is extremely important, so that fastening causes no deformation of the Design profile surface. All support studs used in Design profile systems can be galvanized as they do not remain visible.NOTE: If support studs are running perpendicular to panels (e.g. panels installed horizontally between columns and support studs vertically), the utilization rate for bending moment against wind pressure has to be limited to 85%. This can be checked with Ruukki’s dimensioning program (TrayPan).