freeBIM / ASI (inoffiziell)

weighted sound absorption coefficient
designation of the ability of a material to absorb sound. This is the result of a comparison between the practical sound absorption of a material and the reference curve according tothe standard OENORM EN ISO 11654.

flexural strenght
modulus of rupture, bend strength, or fracture strength: mechanical parameter for brittle material, is defined as a material's ability to resist deformation under load

reaction to fire classification
reaction to fire classification of the product, shall be determined in accordance with EN 13501-1 and the mounting and fixing rules given in EN 15715

form of insulation
block,sheet etc

compressive strenght
capacity of the material or structure to withstand compressive loads

compressive strenght at 10% deformation
deformation of 10% concerning the therefore necessary pressure; determined in accordance with EN 826

compressive strenght at 2% deformation
deformation of 2% concerning the therefore necessary pressure

dynamic stiffness
dynamic stiffness of insulation layer for sound insulation indicates a sufficient flexibility of the insulation

Young's modulus
Elastic modulus/modulus of elasticity: number that measures an object or substance's resistance to being deformed elastically (i.e., non-permanently) when a force is applied to it.

hazard class (environmental danger)
Dangerous goods are divided into nine classes (in addition to several subcategories) on the basis of the specific chemical characteristics producing the risk

surface coating
functional or decorative coating with a thickness of less than 3mm. i.e. paper, plastic foil, woven mesh, metallic foils. These coatings are not considered to be materials of any insulating value and have no affect on the thermal transmission value of the product.

short term water absorption
water absorption over a short period

compressive creep
plastic deformation over time as affected by long term exposure to pressure

multi-layered insulation products
A product comprised of 2 or more layers of insulation materials which can be laminated together or be coated with an exterior coating or layer. These must be in accordance with the same european standards of fabrication. The various layers of the system are bonded to one another through a chemical or physical bond.

practical sound absorption coefficient
sound absorption for the octave spectrum/range calculated according to the standard OENORM EN ISO 11654

point load of the insulation
describes the surface hardness of the insulation; the point load at 5mm deformation shall be determined in accordance with EN 12430 and declared in levels with steps of 50 N.

real density
ratio between the mass of the dry specimen and the volume of its solid part

apparent density
ratio between the mass of the dry specimen and its apparent volume

Shear modulus
shear modulus or modulus of rigidity: ratio of shear stress to the shear strain

Specific thermal capacity
thermal capacity measured as the amount of energy/heat necessary to increase the heat of 1 Kg. Of a material by 1 Kelvin.

Thermal transmittance
also known as U-value; is the rate of transfer of heat per second through one square metre of a structure divided by the difference in temperature across the structure; is the reciprocal of the total thermal resistance.

thermal resistance
heat property and a measurement of a temperature difference by which an object or material resists a heat flow

thermal conductivity
thermal conductivity (often denoted k, ?, or ?) is the property of a material to conduct heat

water absorption as a result of diffusion
water absorption as a result of a long process where a gas or solid element is infiltrated by another gas.

long term water absorption by partial immersion
long term water absorption by partial immersion

long term water absorption by complete immersion
long term water absorption by complete immersion

water vapour diffusion resistance factor
the relationship between the water vapour diffusion resistance of a material compared with that of a layer of dormant air in the same thickness as the material. This is expressed in the form of a factor, with the air layer as the basis. The larger the factor of the material, the greater is the resistance of the material to the diffusion of water vapour.

water vapour diffusion resistance factor
the relationship between the water vapour diffusion resistance of a material compared with that of a layer of dormant air in the same thickness as the material. This is expressed in the form of a factor, with the air layer as the basis. The larger the factor of the material, the greater is the resistance of the material to the diffusion of water vapour.

resistence to freeze/thaw cycles
resistence to freeze/thaw cycles after long term water absorption as a result of diffusion.

resistence to freeze/thaw cycles
resistence to freeze/thaw cycles after water absorption as a result of long term complete immersion in water.

tenacity
ability of the material or structure to resist tensile loads

compressibility
difference between the original thickness of the material and the thickness under load/stress.