The test method used to assess the effectiveness of flame retardant products is BS476, Part 7 1987 and is used to classify a material in terms of "Spread of Flame". Class 1 is a low surface spread of flame, the highest achievable with the test method and is a performance normally required for walls and ceilings. In high risk areas such as escape routes Class 0, limited combustibility, is required. To comply materials must have a Class 1 Surface Spread of Flame and a low fire propagation to BS 476 Part 6 1989. Intumescent coatings are used to prevent the penetration of fire through a structure for a specific period in accordance with BS 476 pARTS 20-23 1987. Such coatings are given classifications with specific periods of time achievements, such as "30 minutes".
25 = 52
52 = 25
That means your body weight is made up of more than 25% fat. BMI stands for Body Mass Index.
The Black Flame - album - was created on 2006-09-25.
When using the math term, spread, it means the distance between two numbers. For example, if a football score ends with a score of 25 to 17, the spread is 8.
32 = 25
It means to write out your answers in index or indices format as for example 5*5 = 25 which is the same as 52
5^2
Above 25=over weight Above 30=obese Above 40=morbidly obese
John F. Kennedy Eternal Flame was created on 1963-11-25.
This means that at a temperature of 25 degrees Celsius, the refractive index of water is 1.333. The refractive index is a measure of how much light bends when passing through a medium, and a higher refractive index indicates a higher bending effect.