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7 R E L A S T ® | S T R U C T U R A L R E I N F O R C E M E N T S Y S T E M Notes on use Astepped drilling method shall be used when the drill hole depth is greater than 160 mm in case of RELAST ® 16 and 200 mm in case of RELAST ® 22 This means that two drilling diameters shall be used If the drill hole depth is smaller than the respective values for each size a standard drilling method is prescribed Borehole drilling and cleaning Injecting the RELAST ® mortar Setting the Screw Stepped drilling method Installation instructions Borehole cleaning The pressure distribution washer then the wedgelock washer with the curved side facing the pressure distribution washer are inserted The nut is then tightened using a torque wrench Please check the approval for the required torque value The concrete cutting thread of the RELAST ® screw anchor creates a mechanical interlock between the screw and the concrete which creates an immediate loadbearing capacity This load capacity is further increased by the chemical adhesion of the RELAST ® mortar that bonds the screw to the concrete