Minor ponding on built-up or foam roofs is acceptable up to 1/2-inch-deep in small areas providing that the roof is dry within how many maximum hours after rainfall?

Allowing minor ponding to occur over only 1/4 of the roof span is overly conservative and does not align with the established guideline. This option would unnecessarily restrict the area where ponding is deemed acceptable, potentially leading to underutilization of the roof's drainage design.

Permitting minor ponding over 1/3 of the roof span still falls short of the maximum allowance. While this option offers more flexibility than 1/4, it is not in accordance with the specified guidelines that clearly state a larger span can be permitted for minor ponding.

Allowing minor ponding over 2/3 of the roof span exceeds the recommended limit and poses a risk of water accumulation that could lead to significant structural issues. This option fails to address the importance of managing water effectively on roofing systems to avoid long-term damage.