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Expected Snow Loads on Structures from Incomplete Hydrological Data

  • J. Martinec (a1)

Abstract

An assessment of snow loads in Switzerland was required for a revision of the building code. Settling curves of snow are used to compute water equivalents of snow if direct measurements are not available. Based on a frequency analysis, relations between the snow load and the altitude are given for various return periods. Problems of regional effects and of converting the snow-cover data to roof loads are outlined.

Résumé

Estimation des surcharges dues à la neige sur les constructions à partir de données hydrologiques incomplétes. Une étude de la pression de la neige en Suisse a été exigée en connexion avec une revision des normes du bâtiment. Les courbes de tassement de la neige sont utilisées pour calculer l’équivalent en eau en absence des mesures directes. Basées sur l’analyse fréquentielle, les relations entre la pression de la neige et l’altitude sont présentées pour les périodes de retour différentes. Les effets régionaux et la conversion des données sur la couche de neige en pression sur les toits sont traités.

Zusammenfassung

Erwarlungswerte für Schneedachlaskn aus unvollständigen hydrologischen Daten. Eine Auswertung der Schneelasten in der Schweiz wurde für eine Revision der Bauvorschriften verlangt Seizungs-kurven der Schneedecke werden herangezogen, um den Schneewasserwert zu berechnen, falls direkte Messungen fehlen. Aufgrund einer Frequenzanalyse wurden Relationen zwischen der Schneelast und der Meereshöhe für verschiedene Wiederkehrperioden abgeleitet. Probleme der Regionalität und der Umwandlung von Schneedaten in Dachlasten werden behandelt.

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References

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Expected Snow Loads on Structures from Incomplete Hydrological Data

  • J. Martinec (a1)

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