Forced Entry Resistance:
The forced entry resistance test for an Architectural Terrace Door evaluates the door’s ability to withstand unauthorized entry attempts using physical force and common tools. Performed in accordance with standards like ASTM F588, this test simulates real-world break-in scenarios by applying concentrated loads and pry tools at vulnerable points such as latches, locks, hinges, and sash/frame connections. The door must remain secure and not allow a defined access probe to penetrate the interior space within the specified time limit. To pass, the door must resist entry without compromising its structural components, demonstrating a level of security appropriate for its NAFS performance class.

Sash/Leaf Torsion:
The sash (or leaf) torsion test for an Architectural Terrace Door assesses the door panel’s ability to resist twisting or warping when uneven forces are applied to opposite corners of the sash or leaf. This test simulates real-world stresses such as building movement or improper operation that might cause the door to rack or deform. A specific torsional load is applied diagonally across the corners of the door, and the resulting deflection or distortion is measured. The door must maintain structural integrity, and any permanent deformation must remain within the allowable limits defined by NAFS to ensure continued operability and sealing performance.

Life Cycle:
The life cycle test for an Architectural Terrace Door evaluates the long-term durability and performance of the door by simulating repeated opening and closing over an extended period. Conducted in accordance with AAMA 910 and NAFS requirements, the test subjects the door to hundreds of thousands of operating cycles—typically 500,000 for AW-class products—using mechanical actuators that replicate normal user interaction. Throughout the test, the door is monitored for signs of wear, hardware degradation, loss of alignment, or functional failure. After cycling, the door must still operate smoothly and meet key performance criteria such as operating force and air and water tightness to be considered compliant.