Pset_MaterialWoodBasedBeam

8.10.5.13 Pset_MaterialWoodBasedBeam

PSET_TYPEDRIVENOVERRIDE / IfcMaterial / Wood

Material Wood Based Beam: This is a collection of mechanical properties applicable to wood-based materials for beam-like products, especially laminated materials like glulam and LVL. Anisotropy of such materials is taken into account by different properties according to grain direction and load types. All values shall be given for a standardized service condition, a standardized load duration and a standardized reference size of the member according to local design codes. NOTE: In cases where mechanical material properties are graduated for different given reference sizes, separate instances of IfcExtendedMaterialProperties and IfcMaterial have to be used for each required graduation. Mechanically differing versions of a material are treated as different materials. References to the orientation of grain or lay-up correspond to material orientation given by geometrical or topological representation of element objects or types, especially IfcMemberType and IfcStructuralMember.

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Name

Type

Description

ApplicableStructuralDesignMethod

P_SINGLEVALUE / IfcLabel

Applicable Structural Design Method

Determines whether mechanical material properties are applicable to 'ASD' = allowable stress design (working stress design), 'LSD' = limit state design, or 'LRFD' = load and resistance factor design.

InPlane

COMPLEX / CP_MaterialMechanicalBeam

In Plane

Mechanical properties with respect to in-plane load, i.e. bending about the strong axis; tension zone of unbalanced layups is stressed in tension.

Name	Type	Description
YoungModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=0°.
YoungModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=0°.
YoungModulusPerp	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=90°.
YoungModulusPerpMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=90°.
ShearModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, mean value.
ShearModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, minimal value.
BendingStrength	P_SINGLEVALUE / IfcPressureMeasure	Bending strength.
TensileStrength	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=0°.
TensileStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=90°.
CompStrength	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=0°.
CompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=90°.
RaisedCompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Alternative value for compressive strength, α=90°, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\IfcProperty.Description.
ShearStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength.
TorsionalStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength in torsion.
ReferenceDepth	P_SINGLEVALUE / IfcPositiveLengthMeasure	Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment.
InstabilityFactors	P_TABLEVALUE / IfcPositiveRatioMeasure / IfcPositiveRatioMeasure	Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors).

InPlaneNegative

COMPLEX / CP_MaterialMechanicalBeam

In Plane Negative

Mechanical properties with respect to in-plane load, i.e. bending about the strong axis; compression zone of unbalanced layups is stressed in tension.

Name	Type	Description
YoungModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=0°.
YoungModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=0°.
YoungModulusPerp	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=90°.
YoungModulusPerpMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=90°.
ShearModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, mean value.
ShearModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, minimal value.
BendingStrength	P_SINGLEVALUE / IfcPressureMeasure	Bending strength.
TensileStrength	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=0°.
TensileStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=90°.
CompStrength	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=0°.
CompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=90°.
RaisedCompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Alternative value for compressive strength, α=90°, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\IfcProperty.Description.
ShearStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength.
TorsionalStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength in torsion.
ReferenceDepth	P_SINGLEVALUE / IfcPositiveLengthMeasure	Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment.
InstabilityFactors	P_TABLEVALUE / IfcPositiveRatioMeasure / IfcPositiveRatioMeasure	Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors).

OutOfPlane

COMPLEX / CP_MaterialMechanicalBeam

Out Of Plane

Mechanical properties with respect to out-of-plane load, i.e. bending about the weak axis.

Name	Type	Description
YoungModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=0°.
YoungModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=0°.
YoungModulusPerp	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, mean value, α=90°.
YoungModulusPerpMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Elastic modulus, minimal value, α=90°.
ShearModulus	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, mean value.
ShearModulusMin	P_SINGLEVALUE / IfcModulusOfElasticityMeasure	Shear modulus, minimal value.
BendingStrength	P_SINGLEVALUE / IfcPressureMeasure	Bending strength.
TensileStrength	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=0°.
TensileStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Tensile strength, α=90°.
CompStrength	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=0°.
CompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Compressive strength, α=90°.
RaisedCompStrengthPerp	P_SINGLEVALUE / IfcPressureMeasure	Alternative value for compressive strength, α=90°, which may be used under material and code dependent conditions (e.g. if deformation is tolerable, or far from ends of the member); conditions should be stated in SELF\IfcProperty.Description.
ShearStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength.
TorsionalStrength	P_SINGLEVALUE / IfcPressureMeasure	Shear strength in torsion.
ReferenceDepth	P_SINGLEVALUE / IfcPositiveLengthMeasure	Depth in bending for which the mechanical properties are valid; provided as a means to check the integrity of material assignment.
InstabilityFactors	P_TABLEVALUE / IfcPositiveRatioMeasure / IfcPositiveRatioMeasure	Defining values: slenderness ratios; defined values: either factors or divisors of the strength, depending on the design method (if <1: factors, if >1: divisors).

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