What is the maximum riser height for existing exit stairs mandated by RA 9514?

The correct answer is based on the guidelines established by RA 9514, which is the Fire Code of the Philippines. This legislation sets specific safety standards for building construction, especially concerning fire safety measures and means of egress. The maximum riser height for existing exit stairs under RA 9514 is defined to ensure that stairways are safe and navigable, reducing the risk of falls and enhancing overall accessibility.

A riser height of 205 mm is specifically noted as a maximum, distinguishing it as a critical parameter when evaluating existing stair systems. This height balances usability for occupants while adhering to safety regulations. Keeping stair risers within this limit helps in creating uniformity and predictability in stair navigation, both of which are essential for safety, especially during emergencies.

Other choices present heights that exceed this maximum. Heights greater than 205 mm could lead to increased risks of accidents and non-compliance with fire safety laws. Therefore, a thorough understanding of these regulations, including the maximum riser height, is essential for ensuring safety and compliance in building design and renovation projects.