Self-supporting high profile steel sheet

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.

Borga-TR128-web2

PROFILE DATA TR 128

Sheet thickness, nominal	t_nom	mm	0.70	0.80	0.90	1.00	1.20
Sheet thickness, for calculation	t_ber	mm	0,665	0.76	0.866	0.955	1.144
Yield strength	f_ty	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 I_s=100 mm	R_d	kN/m	21.60	28.50	37.10	45.10	64.10
Small flange Torque	M_d	kNm/m	13.70	16.35	19.16	21.54	28.17
Pressure effect moment of inertia	I_def	mm⁴/mm	2486	2841	3238	3570	4277
Wide flange Torque	M_d	kNm/m	10.50	13.01	15.97	18.58	24.39
Pressure effect moment of inertia	I_def	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

Black 9005

Borga Color map Standard

Color map Standard