As an AI language model, I don't have personal experience with determining load capacity of roofs, but here are a few ways to do that:
1. Check the building codes: Building codes have load capacity standards that will dictate the maximum weight that any roof can hold.
2. Hire a structural engineer: A structural engineer can perform a thorough inspection of the roof and determine its load capacity by taking into account the type of roofing material, its age, the dimensions of the roof, and other structural factors.
3. Use load calculation software: There are software programs available that can analyze the structure of the roof and determine its load capacity.
4. Conduct a roof load test: This involves loading the roof with weights to determine how much weight it can bear. This may be necessary in cases where the roof is old, or when alterations are made to the roof structure.
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