Why the load value displayed in the online service "Geo-Zone Tool: Snow, Wind, and Seismic Zone Maps" is different from the value in the corresponding standard in some cases?

Answer

The online service "Geo-Zone Tool: Snow, Wind, and Seismic Zone Maps" can only save a constant value across a surface area.


Figure 01 - Zone Classification

If the respective load standard recommends the isoline display of the load across the country instead of the usual zone classification, the interactive load map shows the areas between the isolines as zones with a constant value. In this case, a larger value of two enclosing isolines is always assigned to these zones.


Accordingly, this "stepped" load display of the locations between the isolines leads to the conservative load determination.



Keywords

Load maps Isoline Load difference Online service

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