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|
|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.