from buildingSMART: A designation by which
materials of an element constructed of a number of material layers is
known and through which the relative positioning of individual layers
can be expressed.
EXAMPLE: A cavity brick wall would be
modeled as IfcMaterialLayerSet
consisting of three IfcMaterialLayer's:
brick, air cavity and brick.
implicitly defines a reference line (MlsBase), to which the start of
the first IfcMaterialLayer
is aligned. The total thickness of a
layer set is calculated from the individual layer thicknesses, the
first layer starting from the reference line and following layers being
placed on top of the previous (no gaps or overlaps).
|| Identification of the layers from which the material layer set is composed.
|| The name by which the material layer set is known.
|| Total thickness of the material layer set is derived from the function IfcMlsTotalThickness.