If the UL Wall Design (assembly) does not specify that the fire resistance-rating is from interior or exterior, does that mean it is rated for fire exposure from both sides?

November 4, 2021

If the UL Wall Design (assembly) does not specify that the fire resistance-rating is from interior or exterior, does that mean it is rated for fire exposure from both sides?

March 26, 2021

How does the cross bracing get installed in a wall assembly when the Design specifies “Cross braced at mid-height” ?

April 8, 2020

What is a “Finish Rating” found on some fire-rated assemblies?

April 8, 2020

What does an * (asterisk) mean when its denoted next to a product specified in a UL Design

January 18, 2020

What is the difference between a “Restrained” and “Unrestrained” rating?

January 18, 2020

Are there any tested floor-ceiling or roof-ceiling designs that specify a wood joist (2×10, “I”-shaped or parallel chord) that incorporate a wood beam (like an LVL) or steel beam?

January 18, 2020

Understanding the Contents of a Tested Design

January 18, 2020

Why are dampers and exhaust fans specified in some designs and not others?

January 18, 2020

I need designs that include wood joist 2 x 8’s and 2 x 10’s. Can you help?

January 17, 2020

Why can’t I find a design? What happened to the design I used to specify?

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