FAQ 003050 EN-US

05/07/2019

# The RX-TIMBER module contains the function called "Boundary Beam". What exactly does this option do?

By means of this option, it can be determined whether a boundary beam shall be designed or an inner beam that is arranged between the individual panels. The design load differs as follows:

Inner beam:
${\mathrm q}_{\mathrm k}\;=\;{\mathrm q}_{\mathrm k'}\;\cdot\;\mathrm a\;\cdot\;\mathrm k$

Boundary beam:
${\mathrm q}_{\mathrm k}\;=\;{\mathrm q}_{\mathrm k'}\;\cdot\;\left(\frac{\mathrm a}2\;+\;\mathrm ü\right)\;\cdot\;\mathrm k$

a = beam or rafter spacing
ü = roof overhang at the gable
k = load factor for continuous effect
pk' = surface load in kN/m²

The application area is shown in Figure 02.