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The Westok group allows the definition of cellular beam cross-sections according to Westok.
The procedure for insertion of this cross-section type into a project is identical with the procedure for any other cross-section type; the user just has to specify the type in the type-selection dialogue, choose the appropriate shape and size, and review or change the required parameters.
Similarly to other cross-section types, basic sectional characteristics are automatically calculated and the user may type in the non-numerical parameters such as name, material, colour, etc.
The Westok cellular beam section uses a specified list from which the user can select the rolled section types. This list is limited to the following types:
- UB
- UC
- UKB
- UKC
- IPE
- HE
- HD
- HL
Upon confirming the input of the Westok cellular beam cross-section several tests are executed to verify the correct input of the geometry.
The following parameters are used:
Top section:
bt - Flange width of the top section
tft - Flange thickness of the top section
twt - Web thickness of the top section
rt - Rounding of the top section
ht - Height of the original I-section from which the top T is cut
Ht - height of the top T-section
Bottom section:
bb - Flange width of the bottom section
tfb - Flange thickness of the bottom section
twb - Web thickness of the bottom section
rb - Rounding of the bottom section
hb - Height of the original I-section from which the bottom T is cut
Hb - height of the bottom T-section
Total section:
H - Total height of the combined section
Openings:
a0 - Opening diameter
at - Distance of opening to top flange (Ht - 0,5 * a0 - tft)
ab - Distance of opening to bottom flange (Hb - 0,5 * a0 - tfb)
S - Opening spacing
Using these parameters the following tests are executed:
In case any of those tests fail a warning is issued and the user has to modify the geometry accordingly.