TR 128 A low-weight self-supporting sheet for roof constructions without purlins Borga TR 128 is suitable for industrial and commercial buildings with overlying insulation and roofing. It is self-supporting up to 10 meters, and can be fixed directly to the frames. It has a large covering width in relation to the buoyancy which gives a good overall economy.This profile is today a standard element in insulated roofing constructions and can be used for most types of bearing constructions. When noise mitigation is desired, the profile can be perforated. TR 128 is made of high-quality steel, grade DX51, cold rolled and galvanized on both sides with a zinc-bearing layer of 275 g/m2, in accordance with EN 10 346 and EN 10 143. Additionally the visible side can be painted white and for some thicknesses also in black. Available thicknesses: 0.7 mm / 0.8 mm / 0.9 mm / 1.0 mm / 1.2 mm. PROFILE DATA TR 128 Sheet thickness, nominal tnom mm 0.70 0.80 0.90 1.00 1.20 Sheet thickness, for calculation tber mm 0,665 0.76 0.866 0.955 1.144 Yield strength fty N/mm2 420 420 420 420 420 Mass m kg/m 8.40 9.60 10.80 12.00 14,40 Weight g kN/m2 0.09 0.10 0.12 0.13 0.16 Intermediate support Is=100 mm Rd kN/m 21.60 28.50 37.10 45.10 64.10 Small flange Torque Md kNm/m 13.70 16.35 19.16 21.54 28.17 Pressure effect moment of inertia Idef mm4/mm 2486 2841 3238 3570 4277 Wide flange Torque Md kNm/m 10.50 13.01 15.97 18.58 24.39 Pressure effect moment of inertia Idef mm4/mm 2372 2774 3235 3570 4277 The Rib perforated design has 5% lower torque and moment of inertia, and 14% lower support reaction – multiply the values by 0.95 and 0.86 respectively. Profile data is calculated according to the Eurocode. Color variation Standard Colors White 9106 Galv Galv Black 9005 Borga Color map Standard Color map Standard
