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www.reference.com/government-politics/class-1-fire-rating...

In the flame-spread rating test, a score of 0 to 25 constitutes a Class 1 rating. The score is relative and balanced between asbestos cement sheet, with a score of 0, and pure red oak, with a score of 100. Building materials with a Class 1 fire rating are often man-made or nonorganic substances.

en.wikipedia.org/wiki/Fire-resistance_rating

A fire-resistance rating typically means the duration for which a passive fire protection system can withstand a standard fire resistance test.This can be quantified simply as a measure of time, or it may entail a host of other criteria, involving other evidence of functionality or fitness for purpose.

sfm.dps.louisiana.gov/doc_flamespread.html

Exterior wall construction can be classified by its fire-resistance. A fire-resistive rating is the time that exterior wall construction can withstand fire exposure as determined by a standard fire test. Wall construction can be classified as 4-hour, 3-hour, 2-hour, 1-hour and non-rated construction.

www.scomp.co.uk/fire-ratings

What is Class 0 ? Class 0 is a Building Regulations rating and not a British Standard Classification. To attain Class 0, a sample must meet Class 1 for spread of flame and also meet the fire propagation requirements of BS476 Part 6. (Hence we quote Class 1/0 as our product meets both criteria).

www.commercialwalldecor.com/blog/what-class-a-fire-rated...

As the name states, this rating pertains to how well a particular wallcovering performs in the event of smoke or fire. While a wallcovering will certainly burn, if it has a rating of Class A, that means that it reduces how quickly the fire spreads.

articles.extension.org/pages/31039/fire-ratings-for...

The tests used to determine the fire ratings for roofs also provide fire resistance information. In this case, the Class A (highest degree of fire resistance), B, or C rating provides relative information about the ability of the roof covering and assembly to resist the penetration of fire as a result of a standard fire exposure (ASTM E 108).

www.timbertech.com/imagine/stories/what-does-class-b-flame...

The ratings are as follows: A = 0-25. B = 26-75. C= 76-200. D = 201-500. E = OVER 500. All wood composite decking products are required to have a Class C or better flame spread rating. Fire regulations and codes continue to become more important in the building industry.

en.wikipedia.org/wiki/Fire_classes

Fire class is a term used to denote the type of fire, in relation to the combustion materials which have (or could be) ignited.This has onward impacts on the type of suppression or extinguishing materials which can be used. Class letters are often assigned to the different types of fire, but these differ between territories.

www.remtech.com/fire-ratings-explained

ModucSec panels fire ratings explained - including BS476 Pt22/EN 1364/DIN 4102-2, BS/EN1047-2, LPS 1181-2 enhanced, and International Maritime Organisation (IMO) standards.

www.safeandvaultstore.com/pages/fire-ratings

U.L. (Underwriters Laboratory) Class of Fire Protection; There are other Fire Ratings not mentioned such as various European fire rating standards. Many manufacturers hire a reputable private laboratory to test their fire or burglar/fire safes for a fire rating. Safe's made in Korea usually have the K.I.S. Fire Test which is a Korean Fire Lab ...