When is structural observation required?

Structural observation is required for all buildings that are classified as high-rise, specifically those that are three stories or higher. This requirement is in place because as buildings increase in height and complexity, the potential for structural issues also increases. High-rise structures face unique challenges, including greater loads and the effects of wind and seismic activity, which necessitate closer scrutiny during the construction process to ensure compliance with design specifications and safety standards.

The requirement aims to ensure that critical elements are properly inspected, materials meet specified standards, and construction methods adhere to the approved design. It's a proactive measure to enhance safety and structural integrity in taller buildings. Therefore, any building that is three stories or higher falls under the criteria for mandatory structural observation, which is a vital part of the construction oversight process.