ASTM International E Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference. ASTM E(). Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure. ASTM E is the standard test method for water penetration of exterior metal roof panels by uniform static air pressure difference. The ASTM E test.
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Although prescribed modifications are outside the scope of this test method, an experienced testing engineer is able to use the principles presented in this test method and generate significant data by isolating specific details and measuring leakage.
It asgm the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
The purpose of this test method is to conduct quality assurance water penetration testing of the roof including panel side laps and structural connections. Link to Active This link will always route to the current Active version of the standard.
Pre-loading atm a essential part of the testing procedure.
For specific hazard statements, see 7. This test method is a specialized adaption of Test Method E The preload test pressure differences positive and negative are to be specified. SITC has utilized this test method to assist our clients with their quality assurance testing of metal panel roof systems.
Practical considerations suggest that every combination of panel thickness, span, and design load need not be tested in order to substantiate product performance. Read more about what our customers have to say Then the e16466 is preloaded with a negative static air pressure differential for a minimum e6146 10 seconds. Composite systems in which the source cannot be readily determined are outside the scope of this test method.
It is difficult to simulate the identical complex wetting conditions that can be encountered in service, including large wind-blown water drops, increasing water drop impact pressures with increasing wind velocity, and lateral or upward moving air and water.
The positive test pressure shall be greater than or equal to 15 pounds per square foot. Wstm notes and footnotes shall not be considered as requirements of the test method.
For that reason the slope of the roof plays a significant importance.
A roof contains many details. Some designs are more sensitive than others to this upward moving water. The slope of the roof is significant.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Historical Version s ashm view previous versions of standard. These factors shall be fully considered prior to specifying the test pressure difference.
After applying the preload there is a two minute recovery period.
ASTM E – Farabaugh Engineering and Testing
The test is conducted by attaching the chamber to the test specimen. This is a test procedure. This test method shall not, by itself, be relied upon to form conclusions about overall water penetration through metal roofs. In applying the results of tests by this method, note that the performance of a roof or its components, or both, may be a function of proper installation and adjustment. The calibrated spray racks shall deliver water uniformly against the aztm surface at a minimum rate of five gallons per square foot per hour.
In service, the performance also depends on the rigidity of supporting construction, roof slope, and on the resistance of components to atsm by various f1646 Prior to testing a positive static air pressure differential preload is applied. The values given in parentheses are mathematical conversions to SI s1646 that are provided for information only and are not considered standard.
A section of calibrated spray racks are set in place 12 inches above the specimen. It does not include leakage at openings or perimeter or any other details. This process is repeated for a total of three cycles.