Load-Bearing Sheet T70-57L-846

Optimal geometry of the T70 enables cost efficient roof structures for reasonable spans.

For the optimal structural dimensioning, use Ruukki’s roof dimensionin software, Poimu.

T70 is targeted for roof structures with spans less than 5m.

The information on our website is accurate to the best of our knowledge and understanding. Although every effort has been made to ensure accuracy, the company cannot accept any responsibility for any direct or indirect damages resulting from possible errors or incorrect application of the information of this publication. We reserve the right to make changes.

Copyright © 2019 Ruukki Construction. All Rights Reserved.

    Model name
    Load-Bearing Sheet T70-57L-846
    Product code
    70 mm
    Width of valley
    57 mm
    Width of crown
    65 mm
    Effective width
    846 mm
    Minimum length
    600 mm
    Maximum Length
    15000 mm
    Typical Span
    <5 m
    Quality control
    Factory production control according to EN14782 and EN1090-1
    Profile sheet: EN 14782 and EN 1090-2
    CE Marking
    Execution class
    EXC1, EXC2, EXC3


    Material thickness (mm) Steel grade Zinc (g/m2) Surface treatment Corrosion class, interior Corrosion class, exterior Colours  Weight (kg/m2)
    0.6 S280 Z275 Pural Matt - C4 RR21, RR22, RR23, RR29, RR32, RR33, RR750  6.96
    0.7 S350 Z275 Pural - C4 RR21, RR22, RR23, RR33  8.12


    Note: The reverse sides of the colour coated sheets are painted as standard with 2-layer grey backside coating


    Protection against corrosion

    Environment Coating
    Interior applications in environments with corrosivity category C1, C2 according to EN ISO 12944-2 standard and A1, A2 according to EN 10169 standard Steel sheets with zinc coating of 100 g/m2 and with polyester coating SP 15, thickness 15 μm
    Interior applications in environments with corrosivity category C1, C2, C3 according to EN ISO 12944-2 standard and A1, A2, A3 according to EN 10169 standard Steel sheets with zinc coating of 275 g/m2 and with polyester coating SP 25, thickness 25 μm

    Accessories for load bearing sheets include e.g. flashings, fasteners, gaskets and sealing flanges. These accessories ensure fast assembly, fastening reliability, joint tightness.
    Design tools
    To make both architectural and structural design work easier, with accurate product information in 3D form, we offers a selection of CAD / BIM -objects and software tools, to be downloaded from the Software Toolbox portal.

    Ready modelled BIM objects

    Download objects for ArchiCAD
    Download objects for Revit

    Dimensioning software Poimu

    We offer excellent dimensioning software, Poimu, which allows you to optimise product choice according to the Eurocode.
    Simply by defining some basic input data you can select a load-bearing sheet for their needs from Ruukki's selection. This quick optimisation tool covers 1-, 2-span and continuous structures and gives the exact solution as to what sheet should be used, as well as its length. 

    Download Poimu

    Detail drawing (.dwg)

    Detail drawing (.pdf)



    Assembly instructions document includes information about:

    • Packing
    • Transportation and unloading
    • Storing
    • Assembling.
    Certificates & approvals

    Declaration of performance