Check floor vibration
To establish the response of a floor to dynamic excitation you can either apply a simplified floor vibration check (as described here), or you might choose to perform a more rigorous footfall assessment.
If you apply a simplified floor vibration check, it will be applied over a user-defined rectangular or polygon shaped slab area by using the Vibration Check command in the Floor Vibration group. In order to create the check, you need to identify a primary beam, secondary beam and critical slab item. In addition, you must specify associated data in order to perform the floor vibration calculation.
Create floor vibration check items
Floor vibration check items can only be created in 2D Views.
Create floor vibration checks that consider two or three adjoining spans
Creating two-span or three-span floor vibration checks is almost identical to that required for single spans. When creating the check item, do the following:
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In the Properties window, set the Adjoining Spans property of a primary and/or secondary beam to Two span or Three span.
If the Two span option is selected, note the following:
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When you hover the mouse pointer to select the beam, only beams of two or more spans are available.
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When a beam is highlighted, note that the beam directly under the mouse pointer will become the critical beam, and the second highlighted beam will become the adjoining beam.
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The second highlighted beam (the adjoining beam) will be the beam closest to the mouse pointer position. That's why, in order to highlight the adjoining beam at a particular end of the critical beam, you can move the mouse pointer toward that end of the critical beam.
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When you hover the mouse pointer to select the beam, only beams of three or more spans are available to be highlighted,
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When a beam is highlighted, note that the beam directly under the mouse pointer will become the critical beam, and the second highlighted beam will become the adjoining beam.
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The second highlighted beam (the adjoining beam) will be the beam closest to the mouse pointer position. That's why, in order to highlight the adjoining beam at a particular end of the critical beam, you can move the mouse pointer toward that end of the critical beam.
Modify the properties of existing floor vibration check items
Check vibration for all floor vibration check items
Tekla Structural Designer performs floor vibration checks for all floor vibration check items in the model.