Why are the typical low-slope roof surfaces not appropriate when public access is planned?

Typical low-slope roof surfaces are often not suitable for public access due to their design and structural limitations, which may not support foot traffic safely. These roofs can have inadequate drainage, increasing the risk of water pooling and leaks, which can compromise safety and integrity. Additionally, materials used in low-slope roofs may not be durable enough to withstand the wear and tear from public use, potentially leading to costly maintenance issues. Lastly, safety features such as guardrails and appropriate walking surfaces may be challenging to implement effectively on such roofs.