Building Health &
Sustainability

Structural Performance

GreenGirt Composite Metal Hybrid (CMH) combines the best of both worlds in building materials with the structural properties of metal and the thermal efficiency of composites. The continuous metal inserts in the composite flanges of the cross-linked thermoset Z-profile allow attachment of cladding systems using self-tapping screws while eliminating through-metal to the building and providing zero thermal short circuits from through-fastening. Additionally, GreenGirt CMH’s strength-to-weight ratio makes it a superior solution to metal or FRP-only materials.

GreenGirt CMH Structural Properties:

High strength-to-weight ratio
Stronger than steel
Fastener torque retention
Superior fastener pull-out
Cantilever joint interlock
Corrosion-resistant
Engineered Service Temperature Guaranteed Performance
Use less material for your project because of superior structural strength

GreenGirt Composite Metal Hybrid (CMH) has been extensively tested for structural integrity, fastener performance, and durability. To assess the structural strength of GreenGirt CMH, researchers have studied how it behaves under different loading conditions, such as static and dynamic loads. In addition, GreenGirt CMH has also been assessed on how it reacts to various environmental conditions, such as temperature, UV radiation, and humidity.

Research and Development engineers have tested the performance of different fasteners with GreenGirt CMH under varying conditions, such as heat, tension, shear, and fatigue. In addition, in terms of durability, GreenGirt CMH has been evaluated on its longevity under various environmental conditions, such as corrosion, operating temperatures, and impact. Overall, extensive research has established that GreenGirt CMH is a robust and durable material that can be used in most building envelope applications.

In addition, our in-house team of engineers reviewed all projects with GreenGirt CMH products are tested via Finite Element Analysis (FEA) for best-practice composite CMH analysis and design regarding point loads, eccentricity, joinery, and live and dead loads. Considerations must be made and centered around the FEA due to the isotropic material.

Testing Capabilities

ASTM D7332-B | 7-Day Fastener Pull-Out Resistance Test

ASTM D7332-B is an approved method utilized to measure the fastener pull-through resistance of FRP composites, particularly those reinforced by high-modulus fibers. It evaluates the force-versus-displacement response when a mechanical fastener is pulled through a composite plate. It is important for this test to be run under a load, taking into account time and service temperature.

Dynamic Mechanical Analysis (DMA)

Dynamic mechanical analysis (DMA) is a technique used to study the mechanical properties of materials when subjected to dynamic forces. This testing method can measure the storage and loss moduli, as well as the damping properties of materials. The results of the test can be used to identify the material’s dynamic stiffness, damping, and temperature sensitivity.

Fastener Pull-Out & Torque Behavior

This type of testing is used to measure the amount of force required to remove a fastener from a material, as well as the amount of torque required to properly secure the fastener. By testing the performance of fasteners, engineers can determine the best type of fastener to use for a particular application and can also calculate the necessary amount of torque to achieve a secure connection.

Finite Element Analysis (FEA)

Every A2P project goes through an FEA. This is done to examine its specific live and dead loads, point loads, eccentricity, joinery, and cladding attachment for stress and deflection in crosswise and lengthwise directions. Setups such as those involving cantilevers, temperature-dependent material properties, and any other anomalies are assessed to identify stress concentrations and predict structural response.

Static Structural Testing

Static structural testing evaluates the strength, stiffness, and durability of materials and products. This testing is used to determine the load–bearing capacity of a material, as well as its long–term performance characteristics. These tests are conducted under controlled conditions and involve the application of a static force or load to the material, such as a tension, compression, shear, or torsion test.