ISO 10318-1:2015 pdf download

2.3.1 General properties
2.3.1.1
nominal value
NV
value ota material property as declared, rather than measured, by the producer/supplier of the material
2.3.2 Terms related to physical properties
2.3.2.1
thickness
d
distance between the upper and lower surfaces of a geosynthetic. measured normal to the surfaces and under a specified pressure
Note Ito entry: Unit is expressed in mm.
2.3.2.2
mass per unit area
PA
ratio of the mass of a specimen of specified dimensions to its area Note I to entry: Unit is expressed in grams per square metre (g/m2).
2.3.3 Terms related to hydraulic properties
2.3.3.1
characteristic opening size
09
size of opening which corresponds to the maximum particle size of 90 % by weight of the soil passing through the geotextile
Note ito entry: Unit is expressed in pm.
2.3.3.2
permeability
rate of fluid transmission through a geosynthetic
2.3.3.3
coefficient of permeability normal to the plane k
ratio between flow velocity v and hydraulic gradient normal to plane
Note ito entry: Unit is expressed in m/s.