RF-TIMBER Pro - Dlubal Software

2 Input Data
2.7 Tapered Members
This table is only available when you have selected at least one member with different
cross-sections on both member ends for the design in table 1.1 General Data. Here, you can
check the definition criteria of the tapered members.
Figure 2.19: Table 1.7 Tapered Members
Cross-section
Table columns A and B list the cross-sections that are defined on the Member Start and
Member End.
Length
The length of the tapered member is also displayed for checking reasons.
Cut-to-Grain Angle α
RF-TIMBER Pro determines the cut-to-grain angle on the basis of the geometric conditions.
The design equations used in the program apply only to the cutting angle α ≤ 20° for
EN 1995-1-1 and SIA 265 or α ≤ 10° for DIN 1052. The limit values can be checked and, if
necessary, adjusted in the dialog box National Annex Settings (see Figure 2.5, page 13).
Grain Parallel to Edge
In table column F you define the member edge to which the timber's grain direction is running
parallel. The "top" or "bottom" edge can be clearly determined by means of the orientation
of the local member axis z (see Figure 2.17).
With Ridge
When the check box is ticked in table column G With Ridge, the program performs the design
for the maximum tension stresses perpendicular to the grain and shear from transverse
force in the ridge cross-section, for example according to [1] condition (85) or [4] condition
(6.50).
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Program RF-TIMBER Pro © 2011 Ing. Software Dlubal