Structural Performance

Most windows sold in North America are certified under a single standard developed by the American Architectural Manufacturers Association that covers wood, vinyl, and aluminum units. This lesson describes how this standard is used to rate the structural grade of a window suitable for a specific application.

Learning Objectives

At the conclusion of this lesson, you will be able to:

• Describe the nomenclature used on permanent window labels
• Distinguish between Performance Class and Performance Grade
• Define design pressure
• Compare design pressure and structural test pressure
• Describe the testing procedures used to establish structural ratings for windows

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