If an approved automatic sprinkler system is installed, what is the maximum area of plastic glazing above the first story in unprotected openings?

When an approved automatic sprinkler system is installed, building codes allow for a higher percentage of plastic glazing in unprotected openings above the first story. Specifically, the maximum area permitted is 50 percent of the total wall area for these openings. This provision is rooted in the understanding that an automatic sprinkler system can mitigate fire risks by suppressing flames and controlling heat levels if a fire occurs.

The allowance for 50 percent coverage reflects a balance between enhancing natural light and aesthetics through openings while also maintaining fire safety considerations. If the area were to exceed this limit, it could potentially compromise the safety measures in place, leading to higher fire risk scenarios. Thus, the maximum area of plastic glazing is strategically limited to ensure that while accessibility to light is provided, fire safety standards are still maintained.