January 12, 2024

UL Certified LED Retrofit Luminaire Conversion Kit FAQs

UL Certified LED retrofit luminaire conversion kits Frequently asked questions Does retrofitting a luminaire void its UL Listing? Retrofitting an installed luminaire does not impact the original Listing. The original equipment manufacturer (OEM) of the luminaire applies the UL Certification (Listing) Mark at the factory. It is the manufacturer’s attestation that the product met the… read more

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March 19, 2021

Cross bracing in a wall assembly

Q: How does the cross bracing get installed in a wall assembly when the Design specifies “Cross braced at mid-height” ? A: Details on cross-bracing can be found in the Supplement to the 1991 Edition of the “National Design Specifications” for wood construction. (PDF Available for purchase from AWC (Click Here). Most structural engineers are… read more

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August 28, 2020

Smart Meters

For many years, electric meters have been the sole responsibility of electric utilities. Building owners are now installing their own electric meters to determine the power produced by on-site renewable energy sources, such as solar or wind. Green construction codes require a means for measuring, monitoring and reporting on energy use, production and reclamation in… read more

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June 12, 2020

Sign Retrofit Kits- Installing LED Sign Retrofit Kits FAQ’s

Installing UL Certified LED Sign Retrofit Kits- What you should know Frequently Asked Questions Does retrofitting a sign or luminaire ‘void’ the UL Listing? Retrofitting an installed sign or luminaire does not impact the original Listing. The Listing Mark is applied by the OEM as the manufacturers’ attestation that the product met the appropriate UL… read more

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April 29, 2020

Plywood Panels in UL Fire Resistant Wall Assemblies

Q. Can plywood panels be added to a UL fire-resistance rated wall assembly to increase structural stability? A. Guide Information for the Fire-resistance Ratings (BXUV) product category describes, among other details, acceptable variations to individual fire-resistance rated assemblies. Section II, item 13 of this guide includes a description of wood structural panels and the requirements… read more

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August 11, 2019


The requirements in the 2015 International Mechanical Code (IMC) broaden the application of the UL 2043 Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products Installed in Air-Handling Spaces. Compliance with UL 2043 was already a requirement for discrete electrical products in plenums, and the 2015 IMC requires discrete plumbing and… read more

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Certifying Roof Deck Constructions for Wind Resistance

An uplifting experience Building codes often require that roof deck constructions and coverings be designed to resist design wind load pressures in accordance with structural requirements specified in the code. They also require testing of various roof constructions to specific standards. To more effectively enforce these code requirements, it is important to understand two things:… read more

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August 10, 2019

Seeking Shelter from Tornadoes and Hurricanes

Testing and certification for storm shelters and safe rooms to ICC 500 Two of the most destructive events that Mother Nature delivers, tornadoes and hurricanes, pose a significant threat to life safety. Hurricanes generate wind speeds from 74 mph to over 150 mph, while tornadoes generate wind speeds from 65 mph to over 250 mph.… read more

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Using Relocatable Power Taps in Health Care Facilities

Listed relocatable power taps (outlet strips) are frequently used in both home and business locations, but the appropriate application of Listed relocatable power taps in the patient care areas of health care facilities is an important safety consideration. Relocatable Power Taps Relocatable power taps, often called outlet strips, are Listed under the Relocatable Power Taps… read more

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August 9, 2019

Products Used in Air Handling Spaces

Article Focus An objective in model mechanical and electrical codes and HVAC standards is to protect life and property from fire and smoke resulting from fires.  One of the protection methods used to accomplish this objective involves restricting the spread of smoke within a building by minimizing the ignition sources and combustibility of the products… read more

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