Awning, Hopper, Projected Window

Awning, Hopper and Project Window

Tests

Awning, Hopper, Projected Window Hardware Load:

The hardware load test for an awning, hopper, or projected window evaluates the strength and performance of the window’s supporting hardware, such as hinges, operators, or friction arms, when subjected to vertical loading. With the sash opened to 45 degrees or its full travel limit (whichever is less), a specified load is applied downward at the midpoint of the sash opposite the hinge side to simulate forces caused by gravity, wind, or user interaction. The test measures how much the sash deflects under this load and ensures that the hardware can support the weight without bending, loosening, or failing. To pass, the deflection must remain within the allowable limits defined by NAFS, and the window must continue to function properly after the load is removed.

Life Cycle:

The life cycle test for an awning, hopper, or projected window evaluates the product’s ability to withstand repeated use over time without compromising functionality or performance. In this test, the sash is mechanically operated through its full range of motion—typically opening to 45 degrees or to the limit of travel and then returning to the closed position—for a defined number of cycles, such as 4,000 for AW-class products, in accordance with NAFS and AAMA 910. The test simulates real-world operation, including opening, closing, and latching, to reveal potential issues like hardware fatigue, seal degradation, or sash misalignment. After cycling, the window must remain fully operable and continue to meet performance requirements for air leakage, water penetration, and structural integrity.

Forced Entry Resistance:

The forced entry resistance test for an awning, hopper, or projected window assesses the window’s ability to resist unauthorized access through physical force and basic tools. Conducted according to ASTM F588, this test targets potential entry points such as locking mechanisms, hinges, and frame connections, simulating real-world break-in attempts. Forces are applied in a controlled manner using tools like pry bars and levers to determine whether the window can withstand tampering without allowing a defined access probe to penetrate through the assembly. To pass, the window must maintain its integrity and remain secure throughout the test duration, meeting the security expectations set by NAFS for its designated performance class.

Sash/Leaf Torsion:

The sash torsion test for an awning, hopper, or projected window evaluates the ability of the sash to resist twisting or warping when subjected to uneven loading, simulating real-world conditions such as improper operation or building movement. In this test, opposing forces are applied diagonally across the corners of the open sash—typically one at the hinge edge and the other at the opposite edge—to induce torsional stress. The amount of deflection is measured during and after the load is applied to assess whether the sash can return to its original shape without permanent deformation. To comply with NAFS requirements, the sash must remain structurally sound and operable, ensuring long-term performance and sealing capability.