6203x
000675
2021-02-24

Wind Load for Flat Roofs on Duopitch Roof

The document also contains a wind load scheme specified for flat and duopitch roofs in particular. The set of rules considers a pitched roof with a roof pitch of less than 5 degrees as a flat roof.

In practice, however, the analysis model of flat roofs is not always defined as absolutely horizontal, often for structural reasons, but with a duopitch roof inclination of less than 5 degrees. This non-planar buckled roof shape is then loaded according to the loading rules for flat roofs.

For applying wind loads to roofs, the RFEM 5 or RSTAB 8 analysis program provides a generator for pitched gable roof shapes and planar flat roof shapes. The special case of a gently pitched gable roof shape smaller than 5 degrees is recognized by the load generator for duopitch roof shapes. In this situation, the generator applies a load specification for an equivalent flat roof.


Author

Mr. Niemeier is responsible for the development of RFEM, RSTAB, RWIND Simulation, and in the area of membrane structures. He is also responsible for quality assurance and customer support.

Links