Carpet Smoke Density Rating

We can now use rule 1 to determine the pile density rating.

Carpet smoke density rating.

This includes all commercial and residential carpet. In all instances interior finish materials irrespective of the approved classification of flame spread shall have a smoke density rating of less than 450. Most jurisdictions require a smoke density rating of 450 or less. Smoke density is reported in terms of maximum optical density based on an arbitrary scale of zero to 800.

All carpets must have an nbs smoke chamber test of 450 or less or it can not be legally manufactured in the united states. 5 000 wear rating durability rating. That are essentially the same. And favored by cri is average pile yarn density.

12 greater than 3 100. The results of this will be either class i or class ii. Astm e662 standard test method for specific optical density of smoke generated by solid materials. Thickness ranges from 0 25 0 50.

Average pile yarn density and the importance of correct pile measurement 275 kb there are various methods of stating relative density specification for pile carpets. Carpet years density rating. Density x pile height 36 face weight e g 2160 x 0 50 36 30 in this example what we know is that the pile density is 2160 and the pile height is 0 5 one half inch. Carpet pad installation costs 0 50 to 1 00 per square foot and the right choice depends on the.

Face weight and density are two entirely different components when it comes to evaluating the. Wear rating is a subjective measure of how long the carpet will last. It is described in the hud fha publication um 44d as follows. Products with a density of 6 to 8 pounds are standard.

If the carpet is for sale it needs to pass this test. It s determined by the carpet manufacturer and it s usually a 1 5 rating. Despite a common misconception carpet density and carpet face weight are not interchangeable terms that mean the same thing although face weight is one factor used to calculate density. Carpet rule 2.

The thickness and density of carpet pads affects how the carpet looks and feels. This rating shall likewise be included in the specifications of the material s by the manufacturer. The second fire rating is the astm e 648 radiant panel test. The density of a carpet is one of many factors that determine a carpet s quality and overall performance.