Wind Uplift Test For Green Roof

The most advanced wind tunnel wind uplift tests are being conducted at the nrc s dynamic roofing facility in ottawa canada using a chamber fan mechanism that simulates the dynamic effects of wind.

Wind uplift test for green roof.

Working in close partnership with spri design guidelines approved by the american national standards institute ansi have been developed for fire wind uplift and root repellency. The standard also applies to wood steel and concrete decks. With the 2014 version of the csa a23 21 standard all roofing systems encountered on the market can be tested. The most advanced wind tunnel wind uplift tests are being conducted at the nrc s dynamic roofing facility in ottawa canada using a chamber fan mechanism that simulates the dynamic effects of wind.

To test for wind pressure a full scale uplift chamber evaluates the ability of a vegetated roof assembly to resist a series of simulated wind gusts where pressure builds and subsequently drops. Green roofs for healthy cities works to develop standards in support of the further development of the industry. For mechanically attached single ply roofing systems the test involves building a roof assembly on a test frame that measures 12 feet by 24 feet. The specific test that pertains to wind uplift utilizes a test apparatus designed by fm approvals.

Fm loss prevention data sheet 1 52 fm 1 52 field uplift tests provides for two methods of testing wind uplift resistance. The test frame has the appropriate roof deck attached to supports. Wind uplift all wind uplift criteria has been incorporated and confirmed by architect or engineer. Fire safety vegetation free border zone abutting roof penetrations intersecting walls parapets upturns or mechanical equipment is installed as required 7.

Per approved green roof plans and design. The negative pressure test and the bonded uplift test. The purpose of this test is to gain uplift resistance data for the panel assembly and evaluate the attachment of the roof covering systems to the roof decks. This test method is used to determine the amount of fatigue and uplift response of the green roof.

The zinco green roof systems are extremely flexible in design and installation and can be tailored specifically to the wind uplift calculation require ments of you green roof project. Many institutes have been performing wind tunnel tests on green roofs and canada is the first country to employ a standard method for testing wind uplift on vegetated roofs. The test is run to failure and the results are reported as the highest uplift pressure achieved prior to failure in psf. Many institutes have been performing wind tunnel tests on green roofs and canada is the first country to employ a standard method for testing wind uplift on vegetated roofs.

The negative pressure test utilizes a five foot by five foot dome that is placed over the roofing membrane surface. The csa a123 21 14 standard is a normalized test method of the dynamic wind uplift resistance of membrane roofing systems.