You start the software, select a purlin type from the drop down menu and enter a few key data. Purlin EC does everything else for you!

As with all programs in the Stahl 2000 suite, the verification is carried out according to the current EuroCode 3 standard, but can also be carried out according to DIN 18800 on request.

The program differentiates between the following purlin types:

• Purlins

• Eaves purlins

• Eaves purlins (monopitch roof at the top)

Purlins EC calculates roof purlins either as single span beams or as continuous beams. The software automatically calculates eaves purlins as single span beams.

Purlins EC also automatically calculates wind loads. You can either select the wind velocity pressure value from a table or enter it manually.

The purlins are either rolled I-beams or welded I-beams.

In addition to the standard calculation specifications, Purlins EC offers a variety of additional options:

• Purlins EC also considers and calculates snow accumulation due to higher roof areas.

• Optionally, roof and eave purlins can be loaded with a compressive force from a bracing.

• On request, Purlins EC activates the “North German Plain” verification.

• To increase the calculated stability, Purlins EC optionally applies a torsionally flexible support through the roof cladding for the roof and eave purlins.

• In addition to bearings in the weak axis, purlins can be supported by tension bars in the center of the span or at the third points.