What is the maximum slope for glazing used in a skylight before it must meet the provisions for vertical glass?

The maximum slope for glazing used in a skylight before it must meet the provisions for vertical glass is correctly identified as 15 degrees. This is an important standard in building design because it ensures that the glass remains functional and safe under a range of conditions.

Glazing on skylights is typically designed to shed water effectively at specific angles. When the slope exceeds 15 degrees, the risk of water pooling or inefficiency in drainage increases, which can lead to leaks or structural issues. By requiring glazing at steeper slopes to meet the same standards as vertical glass, the building codes aim to address concerns about wind pressure, impact resistance, and moisture management.

Understanding this regulation helps contractors ensure compliance with safety and performance standards when designing or installing skylights, thus maintaining the structural integrity of the building as well as the wellbeing of the occupants.