Title: +038=221.001-#####T_01-Ruukki - Sandwichelement - Produktinfo.pdf
Self weight (shear strength): The needed amount of fasteners can be calculated manually by using shear strength values as given in table 1 below and the Ruukki Forma™ weight. The system weight consist of: • Base structure weight: Check the weight of chosen Ruukki® energy panel type. • Cladding & cladding support material weight: Check the weight of chosen cladding system.Whichever calculation from the above (wind suction and self weight) results bigger amount of screws, is then finally the needed amount of screws.Table 1. Characteristic resistances for panel fasteners.Panel fastenerEdge distance (mm)Allowed pull-through resistances (kN/fastener)Mineral wool panels*PIR panels*Allowed shear resistances (kN/fastener)Mineral wool panels*PIR panels*19 mm washer29 mm washer≥30 mm≥100 mm≥30 mm≥100 mm1.251.51.61.951.11.251.11.250.890.67Panel facing thicknesses in mineral wool panels 0.6mm/0.5mm and PIR panels 0.5mm/0.4mm (external/internal).