According to building regulations, the maximum effort to open both interior and exterior doors in public buildings is limited to?

The correct answer reflects building regulations that aim to ensure accessibility and ease of use for all individuals in public buildings. The limit of 5 pounds for the maximum effort to open both interior and exterior doors is established to accommodate people with varying levels of strength and mobility, aligning with accessibility standards such as the Americans with Disabilities Act (ADA). This regulation helps ensure that doorways can be easily navigated by individuals, including those using wheelchairs, walkers, or with limited upper body strength, thus promoting inclusivity in public spaces. By limiting the force required to 5 pounds, it reduces barriers and enhances safety and comfort for all users in public environments.