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This paper considers the actual standards in the Brazilian building code related to the performance parameters of external walls resistance to water penetration. It describes a test method to assess the resistance to rain water penetration and leakage of structural masonry walls with concrete block and mortar rendering.

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The ASTM E (Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference) is a testing standard that describes the procedures to determine the water penetration resistance of windows, curtain walls, skylights, and doors when water is.

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Description:The ASTM E testing is performed by applying water to the exterior of the test specimen while lowering the pressure inside by means of an air chamber built on the inside or opposite side of the test specimen. The water spray system has nozzles spaced on a grid to deliver water so that the test specimen is wet uniformly, includingthose areas vulnerable to water penetration. The calibrated spray apparatus spray-rack system delivers water to the test specimen at a rate of 5. The testing pressure differential is usually determined by the testing specifier. Most generic specifications call for a minimum testing pressure of 6.

Views: 9769 Date: 2018-04-01 Favorited: 78 favorites

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