What percentage of the diagonal line of a building plan must be the minimum distance between two exits?

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The minimum distance between two exits in a building plan is required to be 50% of the diagonal measurement of the area being served. This guideline is crucial for ensuring safe egress during an emergency situation, as it helps to minimize the potential for both exits to be compromised simultaneously. By setting this percentage, the regulation aims to enhance safety by ensuring that occupants have multiple pathways to exit, reducing congestion at one exit point and allowing for a more effective evacuation strategy.

In comparing this to the other choices, 30%, 75%, and 100% do not align with established building codes that focus on practical safety measures. The goal is to create a balance where exits are adequately spaced while still being reasonable in terms of construction and layout logistics. A requirement of 50% is designed to fulfill these safety objectives efficiently.