## Single tapered beams

Cross-sectional Inputs

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

This a beam of a rectangular cross-section whose height changes along its axis at a constant angle (single tapered), under bending about the y-y axis, taking into account the effect of local stresses at the outermost fibre of the tapered edge, according to `Clause 6.4.2`

.

## Timber Type

The **Timber Type** of the cross-section. See the timber database section for the types supported by Teretron.

## Width bThe width of the cross-section, in mm. ## Depth hThe depth of the cross-section, in mm. ## Angle αThe angle of the taper, in degrees. |

## Section modulus reduction

The section modulus reduction ΔW refers to reductions in the nominal cross-sectional 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 cross-section.

## Contribution of cross-section 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`

.

In the case of an LVL member under tension, the member length is also required.

## 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 short-term load duration.