Shear

Cross-sectional Inputs

All references to EN 1995-1-1:2004 unless otherwise stated.

This tests a cross-section in shear with

       (a) one stress component parallel to the grain and one perpendicular to the grain or,

       (b) both components parallel according to Clause 6.1.7.

Timber type

The timber type of the cross-section. See the timber database section for the types supported by Teretron.


Characteristic strength fr,90,k

The relevant standards do not provide characteristic rolling shear strength perpendicular to the grain for Finnish Birch and Finnish Conifer plywood of a 3mm width.

As such, the user has to provide a value for these types of timber for shear with both components perpendicular to the grain.

Cross-section type

The geometry type of the cross-section.

Width b

The width of a rectangular cross-section, in mm.

Depth h

The depth of a rectangular cross-section, in mm.

Diameter d

The diameter of a circular cross-section, in mm.

Design shear stress τd

The design shear stress on a generic cross-section, in MPa.


Area reduction

The area reduction ΔA refers to reductions in the nominal cross-section size that have 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 area of the cross-section.


Contribution of the load distribution system in the member strength properties

Includes factor ksys 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 short-term load duration.