Biaxial Bending
Crosssectional Inputs
All references to EN 199511:2004
unless otherwise stated.
This tests a crosssection in biaxial bending around the yy and zz axes according to Clause 6.1.6
.
Timber type
The timber type of the crosssection. See the timber database section for the types supported by Teretron.
Crosssection type
The geometry type of the crosssection.
Width bThe width of a rectangular crosssection, in mm. Depth hThe depth of a rectangular crosssection, in mm. 

Diameter dThe diameter of a circular crosssection, in mm. 
Section modulus W_{y}
The section modulus of the crosssection about the yy axis, in mm^{3}.
Section modulus W_{z}
The section modulus of the crosssection about the zz axis, in mm^{3}.
Section modulus reduction
The section modulus reduction ΔW refers to reductions in the nominal crosssectional modulus that are to be taken into account in the calculation of the member strength (e.g. holes from fasteners) according to Subclause 5.2(2)
.
It should be given as a percentage of the total nominal section modulus of the crosssection.
Contribution of crosssection size on the determination of member strength properties
Includes factors k_{h} for the calculation of the member strength in solid timber, glulam and LVL, according to Clauses 3.2
, 3.3
, and 3.4
.
Contribution of the load distribution system in the member strength properties
Includes factor k_{sys} for the calculation of the member strength, according to Clause 6.6
, for a member that functions as part of a continuous load distribution system.
Note that Subclause 6.6(3)
states that the strength verification for a continuous load distribution system should be carried out assuming shortterm load duration.