These tests are necessary to understand how a metal roof system can withstand both external and internal pressures which is important when trying to meet design and performance requirements in projects.
Roof wind uplift testing.
The test is performed on a 10 square foot section of the roof.
To ensure a correctly built metal roof there are a variety of wind uplift tests manufacturers use to test their metal panel systems.
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.
This creates an uplift form which is then measured.
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.
Design and performance requirements there are three tests ul 580 ul 1897 and astm e1592 that are used to determine a metal roof s uplift rating.
The test frame has the appropriate roof deck attached to supports.
The ul 1897 wind test is a continuation of ul 580 and is the standard for uplift tests for roof covering systems.
It starts by evacuating the air on the top side of the roof and then lets the atmospheric pressure push on the bottom side.
The negative pressure test and the bonded uplift test.
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.
A common point of system failure occurs when fasteners shear or pull loose from the underlying roof sheathing.