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The individual parameters and their meaning are briefly described in the figure and table below.
For more information we refer to the appropriate articles of the code that are referenced in the enclosed explanatory text below the table.
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sk |
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Ce |
exposure coefficient |
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Ct |
thermal coefficient |
The snow load acting on the roof is determined from:
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s = mii. Ce . Ct. sk |
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where:
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mii |
shape coefficient |
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Ce |
exposure coefficient, usually equal to 1.0 |
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Ct |
thermal coefficient, usually equal to 1.0 |
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sk |
characteristic value of snow weight |
The thermal coefficient can be lower than 1.0 in buildings where big thermal loses appear thought the roof. The exposure coefficient can express the effect of wind on reduction of snow layer size.