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English: The Underwriters' Laboratories buildings are of interest historically because they served as the headquarters from 1905 to 1979 of the well-known organization in the United States dedicated to the examination and testing of appliances, devices, machinery and materials in respect to life and fire hazards and accident prevention.
The UL enterprise [4] is a global private safety company headquartered in Northbrook, Illinois, composed of three organizations, UL Research Institutes, UL Standards & Engagement and UL Solutions. Established in 1894, the UL enterprise was founded as the Underwriters' Electrical Bureau (a bureau of the National Board of Fire Underwriters ), [ 5 ...
The Underwriters Laboratories' UL 365 is a safety standard that governs the construction, performance, and maintenance of police station-connected burglar alarm units and systems. These systems are designed primarily for use in mercantile premises, including mercantile safes and vaults, as well as bank safes and vaults.
NFPA 80 allows a maximum door undercut of 3/4 inch, however fire doors are tested with smaller clearances in accordance with NFPA 252. [6] Corridors have a fire rating of one hour or less, and the fire doors in them are required by code to have a fire rating of 1/2 or 1/3 hour, the intent of which is mainly to restrict smoke travel. [7]
The Steiner tunnel test is a widely used method of testing building interior wall and ceiling finishes for their ability to support and propagate fire, and for their tendency to emit smoke. The test was developed in 1944 by Al Steiner of Underwriters Laboratories , and has been incorporated as a reference into North American standards for ...
Elm St. Salvage Corps HQ opened in 1924 Salvage Corps HQ on East 8th St. opened in 1897. The Underwriter's Salvage Corps in Cincinnati, Ohio was created and operated by the Underwriters Association, a syndicate of Cincinnati-based fire insurance companies, for the purpose of reducing financial losses to their companies from claims due to building fires by providing a company of trained men ...
After the 1979 sale of Federal Pacific Electric to Reliance Electric, a unit of Exxon Corporation, Reliance reported to the U.S. Consumer Product Safety Commission that the Stab-Lok breakers and panels did not meet the requirements published by Underwriters Laboratories, even though the products bore UL labels. The CPSC performed its own ...
This experience led him to eventually found the Underwriter's Electrical Bureau in 1894, [2] which later became Underwriters Laboratories in 1903. From 1903 to 1909, he was the Secretary and Treasurer of the National Fire Protection Association, becoming the President of the association from 1910 to 1912. In 1916 he became the first president ...