BS8579:2020 "Guide to the design of balconies and terraces" specifies a coefficient (a multiplier or factor that measures a particular property) based on the location of the balcony or terrace relatively on the building. Top floor & corner balcony locations have a larger multiplier than mid wall balconies.
Here is an explanatory diagram from BS8579:2020 showing what is meant by "Top floor", "Corner", or "Mid-wall" Balconies:
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