fischer fixing-systems main-catalogue Strana 232
Nabídka komerčních zákazníků **Nejlépe prodávané z Fischer
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Concrete screw ULTRACUT FBS II 8-14 · High performance steel anchors Loads Concrete screw UltraCut FBS II US R hexagon head with integral washer and FBS II SK R countersunk head Permissible loads of a single anchor¹) in normal concrete of strength class C20/25. For the design the complete current assessment ETA-17/0740 has to be considered. Material/ surface Type 4 Cracked concrete Non-cracked concrete Screw-in depth Minimum member thickness Maximum installation torque Permissible tension (Nperm) and shear loads (Vperm); minimum spacing (smin) and edge distances (cmin) with reduced loads Permissible tension (Nperm) and shear loads (Vperm); minimum spacing (smin) and edge distances (cmin) with reduced loads hnom hmin Timp, max²) Nperm³) Vperm³) smin³) cmin³) Nperm³) Vperm³) smin³) cmin³) [mm] [mm] [Nm] [kN] [kN] [mm] [mm] [kN] [kN] [mm] [mm] FBS II 8 R 50 100 450 1.9 4.1 35 35 3.3 5.9 35 35 FBS II 8 R 65 120 450 4.3 6.1 35 35 6.7 8.8 35 35 FBS II 10 R 55 100 450 2.1 4.6 40 40 4.0 6.6 40 40 FBS II 10 R 65 120 450 2.9 6.0 40 40 6.7 8.5 40 40 FBS II 10 R 85 140 450 7.6 18.4 40 40 13.1 20.9 40 40 FBS II 12 R 60 110 650 2.1 5.3 50 50 4.8 7.5 50 50 FBS II 12 R 75 130 650 5.2 15.2 50 50 5.7 21.8 50 50 FBS II 12 R 100 150 650 12.0 23.9 50 50 17.1 26.2 50 50 ¹) Design according to EN 1992-4:2018 (for static resp. quasi-static loads). The partial safety factors for material resistance as regulated in the ETA as well as a partial safety factor for load actions of γL = 1.4 are considered. As a single anchor counts e.g. an anchor with a spacing s ≥ 3 x hef and an edge distance c ≥ 1.5 x hef. Accurate data see ETA. ²) Maximum allowable torque for installation with any tangential impact screw driver. Further technical data see ETA. ³) In the case of combinations of tension and shear loads, bending moments with reduced or minimum spacing and edge distances (anchor groups), the design must be carried out in accordance with the provisions of the complete ETA and the provisions of the EN 1992-4:2018. We recommend using our anchor design software C-FIX. Loads Concrete srew UltraCut FBS II Recommended loads¹) ³) for a single anchor or a fixing point4) 5) 6) in solid brick masonry. Type Anchorage depth FBS II 8 FBS II 10 hnom [mm] 65 85 Solid clay brick (EN771-1) ≥ 240 x 113 x 115 mm fb ≥ 12 [kN] 1.1¹0) 1.4¹0) Solid clay brick (EN771-1) ≥ 240 x 113 x 115 mm fb ≥ 20 [kN] 1.67)¹0) 1.67)¹0) Solid sand-lime brick (EN771-2) ≥ 240 x 71 x 115 mm fb ≥ 12 [kN] 1.27)¹0) 1.27)¹0) Aerated concrete (EN771-4) ≥ 499 x 249 x 120 mm fb ≥ 6 [kN] 0.7 0.9 Recommended loads (Frec) in the respective base material ²)³) Minimum spacing (smin) and edge distances (cmin) Minimum spacing within anchor groups of 2 or 4 anchors smin [mm] 80 80 Minimum spacing between single anchors or anchor groups smin [mm] 80 80 20 Minimum distance to the horizontal joint cmin,v8) [mm] 20 Minimum distance to the vertical joint cmin,h8) [mm] 40 40 Minimum distance to the free edge cmin, free edge8) [mm] 200 200 Tightening torque9) (Ttighten) in respective base material Solid clay brick¹0) Ttighten [Nm] 10 10 Solid sandlime brick¹0) Ttighten [Nm] 15 15 Aerated concrete Ttighten [Nm] 5 5 ¹) ²) ³) 4) An appropriate safety factor is considered. The given loads apply to the given brick measures for masonry with superimposed load. Larger brick formats are at least equivalent in case of the loads. Base material fb in [N/mm²]. The loads only apply to multiple fixings of non-load-bearing systems and are valid for tensile load, shear load and oblique load under any angle. To confirm the given technical data, it is recommended to carry out tests on the construction site. In case of not visible joints a 100% testing of the anchors is recommended as the concrete screws only work in the brick but not in mortar joints. 5) A fixing point can be a single anchor, 2 anchors or 4 anchors with a minimum spacing smin. Anchor groups of 4 anchors are arranged in rectangular disposition. 6) The fixing points have to be arranged in this way that there will be always maximum one fixing point arranged in one brick. 7) Brick pull-out is decisive. 8) The values cmin,v and cmin,h are only valid if the mortar joints are filled proper. Otherwise the joints has to be considered as free edges and cmin,free edge is decisive. Minimum mortar strenght is M 2.5. 9) The screw is screwed in with a cordless screwdriver, an impact screwdriver or by hand. The screwing process must be finished immediately when the screw head is in contact with the assembled object. The specified tightening torque must then be applied with a torque wrench. ¹0) The values are valid for unperforated solid bricks. 232
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