Ul 90 Roof

To be tested in accordance with ul 580.

Ul 90 roof.

Roofing bearing the ul classification mark. This test evaluates the roof deck its attachments to supports and roof covering materials only. Ul 90 wind uplift ratings. This test is to evaluate comparative resistance of roof assemblies to simulated load which correspond to wind velocities of 100 174 mph.

Furthermore the roofing designer or specifier sometimes assumes if there is a design wind speed requirement of 90 mph then the roof system must have a 1 90 rating which is not always true at least not for the reason they think maybe for tall buildings or if other factors exist. The ul certification mark on roofing products and assemblies is relied on by code enforcement officials and buyers to verify that your products and systems meet regulatory requirements. The test evaluates the roof deck or the roof deck assembly. Ul standard ul 580 edition 5 standard for tests for uplift resistance of roof assemblies edition date.

Ul with regard to wind uplift. Ul 580 roof deck construction certifications roof deck constructions classified for uplift. 30 class 60 and class 90 tests. Some metal roof systems have been investigated and listed by underwriters laboratories inc.

Metal roofing systems inc mrs system 2500 2. Standard 580 tests for wind uplift resistance of roof assemblies. 405 tgkx 405 download plywood deck cee lock construction no. Bermuda roof panel construction no.

Wind uplift class 90 what are the u l. How does ul 90 relate to wind speed in real world situations. The ul 580 test method provides a comparative measure of uplift resistance of roof deck constructions. 238 uplift class 90 fire not investigated reinforcements used 1.

November 02 2006 ansi approved. Comment with your question to have it answered in a future episode. Ul 580 lists roof assemblies as class 30 60 or 90 meaning that they are designed and engineered to withstand continuous wind speeds of 30 60 or 90 pounds per square foot.