Farabaugh Engineering and Testing



The test standard ASTM E330 – Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylight and Curtain Walls by Uniform Static Air Pressure Difference is used to evaluate the structural performance of various building envelope products.  This test method is intended to represent the effects of a wind load on exterior building surface components.

Summary of Test Method

Test specimen mock-ups are constructed of sufficient size to represent typical construction and assembly details of the building system.   The test specimen mock-ups are installed on to a test chamber that applies the uniform static air pressure difference to the test specimen at various loading increments.   The ASTM E330 test pressures are applied typically in both the positive (inward) and negative (outward) directions while deflection data is recorded at multiple locations. Calibrated test measuring equipment is used to measure test pressures and deflection data.   A record of visual observations are made to evaluate the structural integrity of the system and any failures of the specimen.

Significance and Use

The ASTM E330 Test Standard is an industry standard that is used to evaluate building envelope products with respect to pressures induced by wind load on a building structure.  In many cases the test is required by many project specifications and various building codes.   Project designers typically use the test data and results to develop specific project calculations and details for construction of the system being used.