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Negative Pressure Uplift Testing

EFI Global was hired to perform field uplift (negative pressure) load tests to verify adhesion of newly constructed low-slope roof coverings for projects along the South Texas Coast.


Negative Pressure Uplift Testing
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Our experts were hired to perform field uplift (negative pressure) load tests in compliance with Factory Mutual Loss Prevention Data Sheet 1 – 52 to verify adhesion of newly constructed low-slope roof coverings for new construction projects along the South Texas Coast.

EFI Global (EFI) was hired to perform construction compliance field tests at three campuses of a major university residing in Hurricane Prone Areas of the South Texas Coast. The purpose of the tests was to verify adhesion of newly constructed low-slope roof coverings resistance to uplift against hurricane force winds. This series of projects involved testing of various roof systems and design pressures, and required substantial coordination between the design team, owner, client, and the insurance carrier to accommodate test limitations and construction schedules. The tests were conducted utilizing a custom built negative pressure chamber in compliance with Factory Mutual Loss Prevention Data Sheet 1 – 52. EFI provided consulting to ensure appropriate test parameters were utilized, and completed a series of field uplift (negative pressure) load tests without disruption to active education facilities. The deficiencies identified allowed our client to make repairs to the roofs on site during construction versus months or years afterwards when retro-fit repairs may have voided the roof warranties, or after water infiltration resulting from construction deficiencies.

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