TrusSteel - Cold Formed Steel Trusses

Steel Truss Design Manual 2017

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1 2 3 4 5 6 7 8 3.10 SNOW LOADING Design Considerations An important consideration in the roof design process is the potential for varying types of snow load conditions. Roofs and buildings that include details or parapets and add-ons such as shed roofs or solar panels need to be designed for potential snow accumulation. Roof slope, surface material textures and insulation may also affect the potential for snow and ice accumulation. The American Society of Civil Engineers (ASCE) publishes Minimum Design Loads for Buildings and Other Structures (ASCE7), which contains a detailed procedure for determining snowdrift loads. Regional characteristics such as mountains, flat land and coastal and inland areas can affect annual snowfall. Refer to the Ground Snow Load Map, as published by ASCE. The diagrams shown below are used to illustrate some of the situations that may be encountered when designing a roof system. Actual design procedure as outlined in the applicable code must be consulted when designing for snow. Snow Loading ENGINEERED BY ALPINE S P E C I F Y I N G / D E S I G N I N G

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