U Purlin, Termo

Ruukki’s Termo purlins offer an optimised solution for avoiding cold bridges in purlin constructions on external roofs or walls.

Cold bridges can be minimised by the slotted hole system on the purlins’ web. To optimise the design, use our PurCalc software. 

Applications:

  • Industrial construction
  • Hall and warehouse construction
  • Renovation projects

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.

Properties

Thermo-light-weight-purlin-U-section

 

Model name
U Purlin, Termo
Height
100 - 250 mm
Thickness
1.0, 1.2, 1.5 mm
Section type
U-sections
Minimum length
1600 mm
Maximum Length
15000 mm
Material
Hot galvanised steel sheet Steel quality S350GD+Z275 according to EN 10346
Tolerances
Dimensions and shape according to EN 1090-4, material thickness according to EN 10143
 

Cross section geometries: Termo Purlin U


Type of purlin Termo perforation row quantity (pcs) Thickness (mm) H (mm) A (mm) B (mm) C (mm) Weight (kg/m)
LPT-U100 8 1 100 >=50.0 - - 1.86
1.2 2.23
1.5 2.79
LPT-U154 8 1 154 >=48.0 - - 1.89
1.2 2.27
1.5 2.84
2 3.78
LPT-U175 8 1 175 >=48.0 - - 2.02
1.2 2.42
1.5 3.03
LPT-U179 8 1 179 >=46.0 - - 2.05
1.2 2.46
1.5 3.07
LPT-U200 8 1 200 >=48.5 - - 2.21
1.2 2.66
1.5 3.32
LPT-U204 8 1 204 >=46.5 - - 2.25
1.2 2.69
1.5 3.37
LPT-U229 8 1.0 229 >=47.5 - - 2.44
    1.2       2.93
    1.5       3.66
LPT-U250 10 1 250 >=50.0 - - 2.65
1.2 3.17
1.5 3.97
LPT-U254 10 1 254 >=48.0 - - 2.68
1.2 3.21
1.5 4.02
 

Design tools

Purcalc-logo

PurCalc® software for designing purlins

With the PurCalc® software, the user can design roof and wall purlins produced by Ruukki. The purlins are designed as continuous beams. The purlin type must be the same for the whole structure, but the thickness may vary. One of the purlin flanges is assumed to be supported with the profile sheet. The other flange may be either supported or unsupported. Basic loads such as uniform snow load and wind load can be easily given with a few parameters. Also, more complicated load types, such as snowdrift loads, can be given. The software calculates the necessary fasteners for the supporting structure as well.

Go to PurCalc® software

Ordering

Please provide the following information when ordering:

  • Type of purlin
  • Thickness
  • Length
  • Number.

In case of pre-punched purlins, please send us purlin drawings showing the location of the holes.

 

pre-punched-purlins

 

Pre-punching service

Purlins can be pre-punched in our factory. This makes construction on-site faster and easier. The standardised sizes and locations of holes for fixing screws are presented below. Please contact us for additional information about the pre-punching possibilities.

Holes are made during production at continuous line.

Additional information:

  • Max. material thickness 3mm (for ø 60mm max. material thickness 2mm)
  • Holes can be made in a row
  • Oval and rectangular holes can be rotated by 90°.

 

Type of holeDiameter (mm)Rotation (°)
Round7-
Round10-
Round12-
Round14-
Round16-
Round18-
Round20-
Round22-
Round26-
Round60-
Oval12×2490
Oval14×2490
Oval16×3590
Oval18×31.790
Oval18×3590
Oval20×3590
Rectangular5×2590

Technical documents

Here you can find all technical documents related to Ruukki's light weight purlins. Documents are organised by document type. Click to enter document library.

Certificates and approvals

Here you can find all certificates and approvals related to Ruukki's light weight purlins. Documents are organised by document type. Click to enter document library.